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AUTOMATIC TRANSMISSION NAG1 - SERVICE

1. SHIFT P REG 1 2 4 5 SoL LP REG 4 LP SOL IN PRES Tic LIMIT a gt lt 1 PUMP a Leet SUMP i lt 55 lau cena ET LIU CONT E xd DRIVE TIC OUT LINE CONTROL SHIFT VALVE SHIFT TC IN TC OUT LUBE PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi 5 40 psi 50 350 psi PRESSURE 50 55 psi 0 220 psi 105 120 psi 810bae73 HYDRAULIC FLOW IN DRIVE FAILSAFE 2 ui T LX LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 565 K2 B3 K3 B2 af 15 1 2 4 5 COMMAND 2 3 COMMAND 3 4 COMMAND B2 SHIFT VALVE 1 2 4 5 HOLDING 2 3 HOLDING 3 4 HOLDING 16 SHIFT PRES 2 3 SHIFT PRES 2 3 OVERLAP HIFT P REG DAMPER N LP SOL IN PRES 21NS SOLIN Pl oo og Tic LIMIT TIC OUT GOOLER RTARTA B M
2. LP SOL IN PRES DAMPER LP REG Tic LIMIT 3 SUMP REVERSE 105 120 psi COOLER Liv RATATAT A UTE LINE CONTROL SHIFT VALVE SHIFT TC IN TC OUT MODULATING LUBE PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE 5 40 psi 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi HYDRAULIC FLOW IN REVERSE 810baf23 LX LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION B1 21 561 K3 B2 m K1 K2 B3 L T E
3. 18 E 1 2 4 8 OVERLAP REE gt art ws Jas TE 1 214 5 SOL S m x E 32 a SAI DOD XOQOOOSOC CV 4 S LP REG ood LP SOL IN PRES 20 9 21 5 50 oo oo EF T C OUT 2 Bises QUON LINE CONTROL SHIFT VALVE SHIFT TC IN TC OUT OVERLAP CONVERTER MODULATING LUBE SHIFT PRESSURE VALVE PRESSURE PRESSURE 50 100psi 10 45 psi PRESSURE CONTROL PRESSURE 5 40 psi PRESSURE 50 350 psi PRESSURE 50 55 psi 0 220 psi PRESSURE 0 120 psi CONTROL 105 120 psi SOLENOID VALVE 0 120 psi HYDRAULIC FLOW IN DRIVE FIFTH GEAR EMCC 81000235 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION K2 B3 K3 2 3 COMMAND 3 4 COMMAND is PROTON 2 3 HOLDING 3 4 HOLDING 1 2 4 5 SHIFT PRES 2 3 OVERLAP A t DAMPER 21HS SOLINP 5559 5 LP SOL IN PRES T C LIMIT LIU CONT T C OUT COOLER
4. x gt VAENENUNEANEEES STESSO PENNA 4 Ao LP SOL IN PRES 20 21S SOL IN P 2584 15 moot T C LIMIT UOUOUCUODO PUMP T C IN OUT Liu ERA RORIS S RR i LINE CONTROL SHIFT VALVE SHIFT TC IN OUT MODULATING LUBE SHIFT PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE 5 40 psi PRESSURE 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi CONTROL 105 120 psi SOLENOID VALVE 0 120 psi 81066066 HYDRAULIC FLOW IN DRIVE THIRD GEAR 21 570 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 1 K1 K2 B3 1 2 4 5 COMMAND 2 3 COMMAND 1 2 4 5 HOLDING M 2 3 HOLDING 3 4 HOLDING 2 3 OVERLAP 1 2 4 5 OVERLAP m DAMPER LP SOL IN PRES 218S 50L INP Gooo E Q T C LIMIT een PUMP 505250545 4 SUMP DRIVE oi eee De D3 TO D4 B m TRANSITION
5. 80 3 48 21 608 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX ASSEMBLY Note Pay great attention to cleanliness for all work on the shift plate Fluffy cloths must not be used Leather cloths are particularly good After dismantling all parts must be washed and blown out with com pressed air noting that parts may be blown away 1 Install the pressure supply valve 1 into the valve body 80 48 80e3eeb1 Valve Body Components 1 VALVE BODY 8 SHIFT VALVE PRESSURE REGULATING VALVE 2 1 2 4 5 COMMAND VALVE 9 B2 SHIFT VALVE 3 1 2 4 5 HOLDING PRESSURE SHIFT VALVE 10 2 8 HOLDING PRESSURE SHIFT VALVE 4 1 2 4 5 SHIFT PRESSURE SHIFT VALVE 11 2 8 COMMAND VALVE 5 1 2 4 5 OVERLAP REGULATING VALVE SLEEVE AND PISTON 12 2 8 SHIFT PRESSURE SHIFT VALVE 6 SHIFT PRESSURE REGULATING VALVE 13 TCC LOCK UP REGULATING VALVE 7 REGULATING VALVE PRESSURE REGULATING VALVE 14 TCC DAMPER VALVE if equipped LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 609 Note The sleeves and pistons of the overlap regulating valves must not be mixed up 2 Install all valves and springs from the valve body 1 Check all valves for ease
6. PUMP 22 Limit LIMIT l oooooocco N DEFAULT MODE SHIFT VALVE LINE CONTROL PRESSURE PRESSURE 50 350 psi PRESSURE 50 55 psi 105 120 psi SHIFT PRESSURE 0 220 psi TC IN 50 100 psi ERREKIA TC OUT LUBE 10 45 psi 5 40 psi 810 HYDRAULIC FLOW IN NEUTRAL DEFAULT 21 562 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 1 K1 K2 B3 1 2 4 5 COMMAND 2 3 COMMAND 1 2 4 5 HOLDING 2 3 HOLDING 3 4 HOLDING 2 3 SHIFT PRES 18 2 3 OVERLAP SHIFT P REG LP SOL IN PRES 21NS SOLIN PLS 229 S R Tic LIMIT PUMP 505252545 2521212 SUMP NEUTRAL OUT E 555555 LINE CONTROL SHIFT VALVE SHIFT TC IN TC OUT MODULATING LUBE SHIFT SUMP PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE 5 40 psi PRESSURE 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi CONTROL 105 120 psi SOLENOID VALVE 0 120 psi 810baf59 HYDRAULIC FLOW IN NEUTRAL LX LX 1 2 4 5 COMMAND 1 2 4 5 HOLDING LP SOL IN PRES K2 B3 2 3 COMMAND 2 3 HOLDING _ 2 3 SHIFT PRES 2 3 OVERLAP DAMPER Re x 21NS SOLIN Plo god x L U CONT T C OUT AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 563 K3 B2
7. 97 80e32f35 1 TORQUE CONVERTER LOCK UP CLUTCH 6 TORQUE CONVERTER LOCK UP CLUTCH REGULATING 2 TORQUE CONVERTER OUTPUT VALVE 3 TORQUE CONVERTER INPUT 7 OIL COOLER 4 LUBRICATION 8 LINE PRESSURE REGULATING VALVE 5 TORQUE CONVERTER LOCK UP SOLENOID 9 OIL PUMP The torque converter lockup clutch regulating valve 6 regulates the torque converter lock up clutch working pres sure p TCC in relation to the torque converter clutch control pressure p S TCC According to the size of the work ing pressure p A the torque converter lockup clutch is either Engaged Disengaged or Slipping When the regulating valve 6 is in the lower position lubricating oil flows through the torque converter and oil cooler 8 into the transmission torque converter lockup clutch unpressurized In its regulating position slipping torque converter lockup clutch pressurized a reduced volume of lubricating oil flows through the annular passage 7 bypassing the torque converter and passing direct through the oil cooler into the transmission The rest of the lubricating oil is directed via the throttle a into the torque converter in order to cool the torque converter lockup clutch LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 597 Overlap Regulating Valve During the shift phase the pressure in the deactivating shift actuator is regulated in rel
8. 2 EE QUON 2 LINE CONTROL SHIFT VALVE SHIFT TC IN TC OUT OVERLAP MODULATING LUBE SHIFT PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE PRESSURE 5 40 psi PRESSURE 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi CONTROL 105 120 psi SOLENOID VALVE 0 120 psi 810bb0e0 HYDRAULIC FLOW IN DRIVE THIRD TO FOURTH GEAR TRANSITION LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 571 K2 B3 K3 B2 v on d 24 8 1 2 4 5 COMMAND 2 3 COMMAND o P2 SHIFT VALVE 1 2 4 5 HOLDING 2 3 HOLDING 3 4 HOLDING UN fx 2 3 SHIFT PRES S 18 2 4 5 OVERLAP eo SHIFT P REG ass T 4 DAMPER LP SOL IN PRES 215 50 IN 55259 m T C LIMIT COOLER Em T C OUT LINE CONTROL SHIFT VALVE SHIFT TC IN TC OUT MODULATING LUBE SHIFT PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE 5 40 psi PRESSURE 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi CONTROL 105 120 psi SOLENOID VALVE 0 120 psi 810bb1f5 HYDRAULIC FLOW IN DRIVE FOURTH GEAR 21 572 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 1 K1 K2 B3 1 214 5 COMMAND 2 3 COMMAND amp 3 4 COMMAND 54 1 2 4 5 HOLDING 4 2 3 HOLDING 3 4 HOLDING 1 2 4 5 SHIFT PRES 18 2 3 OVERLAP 214 5 OVERLAP p j DAMPER 2 LP SOL IN PRES 215s soLIN Plo ooo
9. LINE PRESSURE WORKING PRES CONTROL VALVE PRESSURE 81384239 First Gear Engaged 1 1 2 4 5 SHIFT SOLENOID 5 1 2 4 5 COMMAND VALVE 2 1 2 4 5 OVERLAP VALVE 6 DRIVING CLUTCH 1 3 1 2 4 5 SHIFT PRESSURE SHIFT VALVE 7 HOLDING CLUTCH B1 4 1 2 4 5 HOLDING PRESSURE SHIFT VALVE After the gear change is complete the 1 2 4 5 shift solenoid 1 is turned off This reduces the pressure on the end face of the 1 2 4 5 command valve 5 to 0 psi and the spring pressure downshifts the valve to its initial position The line pressure p A is switched to the holding clutch B1 7 and the end face of the holding valve by the downshifted command valve The upshifted holding valve also allows the remaining pressure in clutch K1 6 to be vented 21 522 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX Gear Shift N to D 1st gear Engine Started T TRH RHE IRRI RHN Ra RRI n p sv4 80e372fa Engine Started 1 HOLDING CLUTCH B1 11 PRESSURE HOLDING VALVE 2 DRIVING CLUTCH K1 12 3 4 HOLDING PRESSURE SHIFT VALVE 3 HOLDING CLUTCH B3 13 3 4 COMMAND VALVE 4 DRIVING CLUTCH 14 3 4 SHIFT PRESSURE SHIFT VALVE 5 HOLDING CLUTCH B2 PISTON 15 3 4 OVERLAP REGULATING VALVE 6 HOLDING CLUTCH B2 PISTON OPPOSING FACE 16 BALL V
10. HEAT SHIELD ELECTROHYDRAULIC UNIT BOLT OIL FILTER OIL PAN CLAMPING ELEMENT BOLT DRAIN PLUG DRAIN PLUG GASKET 10 13 PIN PLUG CONNECTOR 11 BOLT 12 GUIDE BUSHING 80e3f910 21 540 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 13 Position Bearing Remover 9082 1 over the inner race of the output shaft bearing 3 14 Slide the collar 3 on the Bearing Remover 9082 1 downward over the fingers 4 of the tool 810d3b74 81043591 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 541 15 Remove the output shaft bearing 3 16 Remove the geartrain end play shim from the out put shaft Be sure to tag the shim since it is very similar to the output shaft washer and they must not be interchanged 810d3b98 21 542 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 80e3f6da Remove K1 K2 and Clutches 1 DRIVING CLUTCH K1 5 THRUST WASHER 2 SUN GEAR OF FRONT PLANETARY GEAR SET 6 FRONT PLANETARY GEAR SET DRIVING CLUTCH K2 AND INPUT SHAFT 3 DRIVING CLUTCH K3 OUTPUT SHAFT AND CENTER AND 7 SEALING RINGS REAR PLANETARY GEAR SETS 4 THRUST NEEDLE BEARING 17 Remove the bolts holding the transmission housing to the converter housing from inside the converter
11. aE ES LIN AEN I VN 9 49 9 9 2 MO 80 2 919 B1 CLUTCH EXTERNALLY TOOTHED DISC INTERNALLY TOOTHED DISC B3 CLUTCH B2 CLUTCH CLUTCH PISTON B2 CLUTCH PISTON B2 CLUTCH INTERNALLY TOOTHED DISC CARRIER REAR PLANETARY GEARSET PLANETARY CARRIER 10 11 12 Holding Clutches CENTER PLANETARY GEARSET ANNULUS GEAR CENTER PLANETARY GEARSET PINION GEARS CENTER PLANETARY GEARSET SUN GEAR 13 14 15 16 17 FRONT PLANETARY GEARSET PINION GEARS FRONT PLANETARY GEARSET SUN GEAR B1 CLUTCH INTERNALLY TOOTHED DISC CARRIER B1 CLUTCH PISTON B1 CLUTCH EXTERNALLY TOOTHED DISC CARRIER The holding clutches connect the annulus gear sun gear or planetary carrier of a planetary gear set against the transmission housing in order to transmit the drive torque If the piston 16 on multiple disc holding clutch B1 1 is subjected to oil pressure it presses the internal 3 and external discs 2 of the disc set together The internally toothed disc carrier 15 locks the sun gear 14 against the housing The planetary pinion gears 13 turn on the sun gear 14 If the multiple disc holding clutch B2 5 is actuated via the piston 7 the piston compresses the disc set The internally toothed disc carrier 8
12. 80e3ee77 80e3ee50 80e3ee93 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 12 Install the strainers 1 2 for the modulating pres sure and shift pressure control solenoid valves into the valve housing 13 Install the electrohydraulic control module 12 onto the shift plate 13 14 Bend the retaining lug on stiffening rib on trans mission oil temperature sensor to retain the elec trohydraulic control module 15 Install the solenoid valves 6 11 into shift plate 13 Note Check O rings on solenoid valves for dam age and replace if necessary 16 Install the leaf springs 5 17 Install the Torx socket bolts 3 4 Tighten the bolts to 8 N m 71 in Ibs Note Pay attention to the different lengths of the Torx socket bolts 18 Install the solenoid caps 1 2 19 Install the electrohydraulic unit into the vehicle 21 611 80e3edf0 80e3edcc Electrical Unit Components SOLENOID CAP SOLENOID CAP BOLT M6X32 BOLT M6X30 LEAF SPRING MODULATING PRESSURE REGULATING SOLENOID VALVE SHIFT PRESSURE REGULATING SOLENOID 3 4 SHIFT SOLENOID TORQUE CONVERTER LOCK UP SOLENOID 10 1 2 4 5 SHIFT SOLENOID 11 2 3 SHIFT SOLENOID 12 ELECTRICHYDRAULIC CONTROL MODULE 13 SHIFT PLATE
13. AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 537 20 Support rear of engine with safety stand or jack 21 Raise transmission slightly with service jack to relieve load on crossmember and supports 22 Remove bolts 2 securing rear support and cush ion 3 to transmission crossmember 1 23 Remove bolts attaching crossmember 1 to frame and remove crossmember 8131d398 24 Remove the bolts 1 holding the engine oil pan 2 to the transmission 3 8131d397 25 Remove all remaining bolts 2 holding the engine 1 to the transmission 3 26 Carefully work transmission and torque converter assembly rearward off engine block dowels 27 Hold torque converter in place during transmission removal 28 Lower transmission and remove assembly from under the vehicle 29 To remove torque converter carefully slide torque converter out of the transmission 8131d396 21 538 DISASSEMBLY AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX Note If the transmission is being reconditioned clutch seal replacement or replaced it is necessary to perform the TCM Adaptation Procedure using the scan tool Refer to 8 ELECTRICAL ELECTRONIC CON TROL MODULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE Note Tag all clutch pack assemblies as they are removed for reassembly identification 1 Remove the torque c
14. 21 612 INSTALLATION 1 Position the electrohydraulic unit in the transmis sion housing Insert selector valve 1 in driver of detent plate 2 When installing the electrohydraulic control module in the transmission housing the plastic part of the selector valve 1 must engage in the driver of the detent plate 2 Install the Torx socket bolts 3 and torque to 8 71 in lbs Install a new oil filter 4 Install oil pan 5 and torque the oil pan bolts to 8 71 in lbs Install the oil drain plug 8 with a new drain plug gasket 9 Torque the drain plug to 20 N m 177 in lbs Install the guide bushing 2 into the transmission housing and install the bolt 11 to hold the guide bushing in place AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 80e3be4f 80e3b0fb HEAT SHIELD ELECTROHYDRAULIC UNIT BOLT OIL FILTER OIL PAN CLAMPING ELEMENT BOLT DRAIN PLUG DRAIN PLUG GASKET 10 13 PIN PLUG CONNECTOR 11 BOLT 12 GUIDE BUSHING LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 613 8 Check O ring on plug connector 1 and replace if necessary 9 Install the plug connector 1 into the guide bushing 2 Turn bayonet lock of guide bushing 2 clock wise to connect plug connector 1 80e3b14f 1
15. 682 INSTALLATION 693 AUTOMATIC TRANSMISSION 1 SERVICE INFORMATION DESCRIPTION 2 3 4 5 c J e 2977 6 OO 9 E RS MET H bo ly n e XE 1 xL all 4 A zs crests 80e28e56 NAG1 Automatic Transmission TORQUE CONVERTER OIL PUMP DRIVESHAFT MULTI DISC HOLDING CLUTCH B1 DRIVING CLUTCH K1 DRIVING CLUTCH K2 MULTI DISC HOLDING CLUTCH B3 DRIVING CLUTCH K3 MULTI DISC HOLDING CLUTCH B2 1 2 3 4 5 6 7 8 9 10 OUTPUT SHAFT 11 PARKING LOCK GEAR 12 INTERMEDIATE SHAFT 13 FREEWHEEL F2 14 REAR PLANETARY GEAR SET 15 CENTER PLANETARY GEAR SET 16 ELECTROHYDRAULIC CONTROL UNIT 17 FRONT PLANETARY GEAR SET 18 FREEWHEEL F1 19 STATOR SHAFT 20 TORQUE CONVERTER LOCK UP CLUTCH The NAG1 automatic transmission is an electronically controlled 5 speed transmission with a lock up clutch in the torque converter The ratios for the gear stages are obtained by 3 planetary gear sets Fifth gear is designed as an overdrive with a high speed ratio LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 497 NAG 1 identifies a family of transmissions and means N ew A utomatic generation 1 Various marketing names are associated with the NAG1
16. 21 550 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX must point towards the parking lock gear 28 Install the retaining ring 1 Ensure that the retaining ring is seated correctly in the groove 29 Check that there is no play between the bearing and the retaining ring using feeler gauge 30 There must be no play between the retaining ring and the bearing If the ring cannot be installed a thinner ring must be used If there is play between the ring and the bearing a thicker ring must be installed Retaining rings are available in thick nesses of 2 0 mm 0 079 in 2 1 mm 0 083 in and 2 2 mm 0 087 in 31 Rotate the transmission so that the bellhousing is pointed upward and ensuring that the output shaft is allowed to move freely 32 Measure input shaft end play Note end play is incorrect transmission is incorrectly assembled or the geartrain end play shim is incorrect The geartrain end play shim is selective a Attach Adapter 8266 18 2 to Handle 8266 8 1 b Attach dial indicator C 3339 3 to Handle 8266 8 1 c Install the assembled tool onto the input shaft of the transmission and tighten the retaining screw on Adapter 8266 18 to secure it to the input shaft d Position the dial indicator plunger against a flat spot on the oil pump and zero the dial indica tor 80e3f910 810afafc e Move input shaft in a
17. 1 WO _ 3 4 HOLDING LP SOL IN PRES Q 20 2188 80L IN S Tic OUT
18. gt lt K1 PRES TO REG VAL VALVE PRESSURE 105 120 psi J 9 LINE PRESSURE 50 350 psi MODULATING PRESSURE 0 120 psi SHIFT VALVE PRESSURE lt LINE PRESSURE SHIFT PRESSURE 0 220 psi SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi VALVE PRESSURE 50 55 psi LINE PRESSURE WORKING PRES 81384239 1 2 3 4 First Gear Engaged 1 2 4 5 SHIFT SOLENOID 5 1 2 4 5 COMMAND VALVE 1 2 4 5 OVERLAP VALVE 6 DRIVING CLUTCH 1 1 2 4 5 SHIFT PRESSURE SHIFT VALVE 7 HOLDING CLUTCH B1 1 2 4 5 HOLDING PRESSURE SHIFT VALVE The end face of the command valve 5 is kept unpressurized via the solenoid valve for 1 2 and 4 5 shift 1 Because of the holding pressure shift valve 4 the working pressure p A is present at the multiple disc holding clutch B1 7 Clutch K1 6 is unpressurized 21 514 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION _ LX Shift Phase 1 2 Shift Phase 1 CONTROL VALVE PRESSURE 105 120 psi LINE PRESSURE 50 350 psi MODULATING PRESSURE 0 120 psi SHIFT VALVE PRESSURE LINE PRESSURE OVERLAP PRESSURE SHIFT PRESS
19. 3 4 SHIFT PRES 21 575 2 27 B2 SHIFT VALVE SHIFT P REG PUMP A SUMP DRIVE 05 TO 04 TRANSITION Sea 2 2 EEEE 4 Huren SHIFT VALVE TC IN LINE CONTROL SHIFT TC OUT OVERLAP MODULATING LUBE SHIFT PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE PRESSURE 5 40 psi _ PRESSURE 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi CONTROL 105 120 psi SOLENOID VALVE 0 120 psi HYDRAULIC FLOW IN DRIVE FIFTH TO FOURTH GEAR TRANSITION 810bb261 21 576 1 K1 1 2 4 5 COMMAND 1 2 4 5 HOLDING 15 2 4 5 OVERLAP LP SOL IN PRES AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION K2 B3 2 3 HOLDING 3 4 HOLDING 2 3 OVERLAP DAMPER o 21 8 305 22002 R 5 T C LIMIT LIU CONT 27777 PLE XA 55 SHIFT P REG ERE LX EE A SUMP DRIVE D4 TO D3 TRANSITION OUT COOLER L U Rees 2 po LINE CONTROL SHIFT VALVE SHIFT TC IN TC OUT OVERLAP MODULATING LUBE SHIFT PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE PRESSURE 5 40 psi PRESSURE 5
20. B2 SHIFT 3 4 HOLDING SHIFT P REG Se Tic LIMIT COOLER LINE CONTROL PRESSURE VALVE 50 350 psi PRESSURE 105 120 psi SHIFT VALVE SHIFT TC IN PRESSURE PRESSURE 50 100 psi 50 55 psi 0 220 psi 10 45 psi a TC OUT MODULATING LUBE SHIFT SUMP PRESSURE 5 40 psi PRESSURE 0 120 psi CONTROL SOLENOID VALVE 0 120 psi 810baf80 HYDRAULIC FLOW IN NEUTRAL TO DRIVE TRANSITION 21 564 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION B1 K1 K2 11 2 3 HO I oo 00 3 4 HOLDING
21. SHIFT P REG s y T C LIMIT SERE 2 SUMP DRIVE D2 TO D1 TRANSITION E ERRER SHIFT VALVE LINE CONTROL SHIFT TC IN PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 50 350 psi PRESSURE 50 55 psi 0 220 psi 105 120 psi TCOUT 10 45 psi OVERLAP PRESSURE MODULATING LUBE PRESSURE 5 40 psi 0 120 psi SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi 810bb2f7 HYDRAULIC FLOW IN DRIVE SECOND TO FIRST GEAR TRANSITION LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 579 SPECIFICATIONS GEAR RATIOS 3591 1 00 1 SEE REVERSE 3 16 1 SPECIFICATIONS Double Sided Friction Single Sided Friction Discs B1 Clutch Snap rings 2 6 2 9 3 2 3 5 3 8 and 0 102 0 114 0 126 0 138 4 1 0 150 0 162 B2 Clutch Clearance 1 9 2 3 0 075 0 091 5 20 24 0079005 B2 Clutch Lee rings 2 9 NE M 3 5 3 8 and 4 1 NND NM 0 126 0 138 0 150 0 162 B3 B3 Clutch Clearance Clearance 1 104140 1 4 0 039 0 00390055 B3 oge ______ Snap rings 3 2 aot 3 8 4 1 4 4 and ASINI 0 138 0 150 4 7 0 162 0 173 0 185 K1 Clutch Clearance 2 7 3 1 0 106 0 122 Double Sided Friction 3 0 3 4 0 118 0 134 3540 01420158 K1 Clutch Clearance 2 4 2 8 0 095 0 110 Single Sided Friction Discs 2 6 3 0 0 102 0 118 10 Disc 2 8 3
22. 80e33db3 3 gt p gt p 7444547 T Fiir dd d E E RC a 4 eS 5 oe SSN NS 25 24 moror RAAN EA VN NY z 5 A gt 45 6 zi v RS E Pa 7 0 80 33 81 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 595 OPERATION ELECTRICAL CONTROL UNIT Signals from the transmission control module TCM are converted into hydraulic functions in the electric valve control unit 7 The RPM sensors 1 12 starter interlock contact 9 and transmission oil temperature sensor 8 of the electric valve control unit 7 supply the TCM with input signals The solenoid valves are controlled by the TCM and trigger the hydraulic functions 80e2d06e HYDRAULIC CONTROL UNIT Working Pressure Regulating Valve Line Pressure or Operating Pressure The working pressure p A is regulated at the working pressure regulating valve 4 in relation to load mod 1 ulating pressure p Mod and gear K1 or K2 pressure mmu 1 The spring in the working pressure regulating valve sets a minimum pressure level basic pressure UU 80 32 19 21 596 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX Torque Converter Lockup Clutch Regulating Valve
23. 80e3f889 OND Holding Clutch B1 HOLDING CLUTCH B1 OUTER CARRIER 5 DISC SPRING PISTON 6 MULTIPLE DISC PACK DISC SPRING 7 SNAP RING SNAP RING 8 MULTI USE SPRING COMPRESSOR 8900 Note Check vulcanized gasket replace if necessary 1 2 Install piston 2 in outer multiple disc carrier 1 Place compressor 8 on disc spring 3 and compress until the groove of the snap ring is exposed Note The collar of the snap ring must point towards the multiple disc pack After installing check snap ring for correct seat 3 Insert snap ring 4 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 4 Insert disc spring 2 in the outer multiple disc car rier Observe the disc spring 2 installation posi tion The lugs of the disc spring 2 washer must align with the 3 raised pads arrow of the B1 mul tiple disc carrier 1 The cone of the spring washer must point downwards 5 Insert the multiple disc pack 6 in the outer multi ple disc carrier and measure the clutch clearance Note Pay attention to the sequence of discs If the original clutch discs are reused be sure to return the disc identified on disassembly as belonging on top of the disc spring 5 to its original loca tion CAUTION When working with double sided fric tion discs an externally lugged steel plate is installed first followed by a friction disc and con tinuing on until all the required discs are
24. LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 10 Using a feeler gauge determine the play L at three points between the snap ring 6 and outer multiple disc 4 11 During the measurement the snap ring 6 must contact the upper bearing surface of the groove in the outer multiple disc carrier 12 The correct clutch clearance is 2 3 2 7 mm 0 091 0 106 in for three friction disc versions 2 4 2 8 mm 0 095 0 110 in for four disc ver sions 2 5 2 9 mm 0 099 0 114 in for five disc versions and 2 7 3 1 mm 0 106 0 122 in for six disc versions 13 Adjust with snap ring 6 if necessary Snap rings are available in thicknesses of 2 3 mm 0 091 in 2 6 mm 0 102 in 2 9 mm 0 114 in 3 2 mm 0 126 in 3 5 mm 0 138 in and 3 8 mm 0 150 in 21 651 80e43e09 DISC SPRING OUTER MULTIPLE DISC 1 8 MM OUTER MULTIPLE DISC 3 5 MM 0 138 IN OUTER MULTIPLE DISC 4 0 MM K2 OUTER DISC CARRIER SNAP RING FRICTION DISCS PISTON 0 071 IN 0 158 IN 14 Insert axial needle bearing 3 into K1 inner multiple disk carrier Insert axial needle bearing 3 with a little grease to prevent it slipping 15 Install input shaft in K1 inner multiple disc carrier with integrated front gear set 2 16 Fit internally geared wheel 18 and install snap ring 19 Pay attention to installation position 21 652 AUTOM
25. zs 3 252 ey 4 ED VA ky 80e33e81 LX REMOVAL 1 Drain transmission oil by unscrewing oil drain plug 8 if equipped Move selector lever to position P Raise vehicle Remove bolt 3 and screw 1 holding the heat shield 2 to the transmission AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 601 80e3b0fb HEAT SHIELD ELECTROHYDRAULIC UNIT BOLT OIL FILTER OIL PAN CLAMPING ELEMENT BOLT DRAIN PLUG DRAIN PLUG GASKET 10 13 PIN PLUG CONNECTOR 11 BOLT 12 GUIDE BUSHING 80e3b115 21 602 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 5 Disconnect 13 pin plug connector 1 Turn bayonet lock of guide bushing 2 anti clockwise 6 Loosen guide bushing 2 and remove from trans mission housing 80e3b14f 7 Detach oil pan 5 8 Remove oil filter 4 9 Unscrew Torx socket bolts 3 and remove electro hydraulic control module 2 80e3b0fb HEAT SHIELD ELECTROHYDRAULIC UNIT BOLT OIL FILTER OIL PAN CLAMPING ELEMENT BOLT DRAIN PLUG DRAIN PLUG GASKET 10 13 PIN PLUG CONNECTOR 11 BOLT 12 GUIDE BUSHING LX AUTOMATIC TRANSMISSION SERVICE INFORMATION DISASSEMBLY
26. 8 Verify that the transmission is in the PARK position by trying to rotate the propeller shaft If the propel ler shaft rotates move the transmission manual shift lever to the full rearward position and turn the propeller shaft until the PARK system is engaged 9 Route the gearshift cable 1 through the mounting bracket 2 10 Engage the gearshift cable 1 eyelet onto the transmission manual shift lever 3 11 Lower vehicle 12 Verify that the shifter is in the PARK position 13 Tighten the adjustment screw 5 to 7 65 in lbs 14 Verify correct shifter operation 15 If necessary install the shield covering the gear shift and park lock cables to the floorpan and install the bolts to hold the shield to the floorpan 16 Install the floor console Refer to 23 BODY IN TERIOR FLOOR CONSOLE INSTALLATION lower instrument panel components Refer to 23 BODY INSTRUMENT PANEL INSTRUMENT PANEL CENTER BEZEL INSTALLATION and dash panel insulation pad as necessary 21 625 p LU 2 813 3473 8131d39a 8134800b 21 626 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION ADJUSTMENTS GEARSHIFT CABLE Check adjustment by starting the engine in PARK and NEUTRAL Adjustment is CORRECT if the engine starts only in these positions Adjustment is INCORRECT if the engine starts in one but not both positions If the engine st
27. 813 3972 DIAGNOSIS AND TESTING BRAKE TRANSMISSION SHIFT INTERLOCK SYSTEM VERIFICATION 1 Verify that the key can only be removed in the PARK position 2 When the shift lever is in PARK the ignition key cylinder should rotate freely from ACC to LOCK When the shifter is in any other gear or neutral position the ignition key cylinder should not rotate to the LOCK position 3 Shifting out of PARK should not be possible when the ignition key cylinder is in the ACC position and the brake pedal is not depressed 4 Shifting out of PARK should not be possible while applying normal force on the shift lever and ignition key cyl inder is in the ACC ON or START positions unless the foot brake pedal is depressed approximately 1 2 inch 12mm LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 585 5 Shifting out of PARK should not be possible when the ignition key cylinder is in the LOCK position regardless of the brake pedal position 6 Shifting between any gears NEUTRAL or into PARK may be done without depressing foot brake pedal with ignition switch in ACC ON or START positions DIAGNOSTIC CHART CONDITION POSSIBLE CAUSE CORRECTION KEY WILL NOT ROTATE TO THE 1 Misadjusted Park Lock cable 1 Adjust Park Lock cable Refer to LOCK POSITION 21 TRANSMISSION AND TRANSFER CASE AUTOMATIC TRANSMISSION BRAKE TRANSMISSION SHIFT INTERLOCK SYSTEM ADJUSTMENTS 2 Misadjusted gearshift cable 2 Ad
28. ES D RA 80 2 99 Second Gear Powerflow 1 TORQUE CONVERTER LOCK UP CLUTCH 14 CENTER PLANETARY CARRIER 2 TORQUE CONVERTER TURBINE 15 REAR PLANETARY CARRIER 3 TORQUE CONVERTER IMPELLER 16 TORQUE CONVERTER STATOR 4 HOLDING CLUTCH 1 17 FRONT PLANETARY PINION GEARS 5 HOLDING CLUTCH B3 18 CENTER PLANETARY PINION GEARS 6 HOLDING CLUTCH B2 19 REAR PLANETARY PINION GEARS 7 DRIVING CLUTCH 20 FREEWHEELING CLUTCH F1 8 FRONT PLANETARY ANNULUS GEAR 21 FRONT PLANETARY SUN GEAR 9 DRIVING CLUTCH K2 22 CENTER PLANETARY SUN GEAR 10 CENTER PLANETARY ANNULUS GEAR 23 REAR PLANETARY SUN GEAR 11 REAR PLANETARY ANNULUS GEAR 24 FREEWHEELING CLUTCH F2 12 DRIVING CLUTCH 25 INPUT SHAFT 13 FRONT PLANETARY CARRIER 26 OUTPUT SHAFT A ENGINE SPEED D SECOND GEAR RATIO B TRANSMISSION INPUT SPEED E FIXED PARTS C FIRST GEAR RATIO 21 502 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX i Bun HA EC 558 D RENE 80e2ac90 Second Gear Powerflow 1 TORQUE CONVERTER LOCK UP CLUTCH 14 CENTER PLANETARY CARRIER 2 TORQUE CONVERTER TURBINE 15 REAR PLANETARY CARRIER 3 TORQUE CONVERTER IMPELLER 16 TORQUE CONVERTER STATOR 4 HOLDING CLUTCH 1 17 FRONT PLANETARY PINION GEARS 5 HOLDING CLUTCH B3 18 CENTER PLANETARY PINION GEARS 6 HOLDING CLUTCH B2
29. Its purpose is to recognize selector valve and selector lever positions P and The park neutral contact consists of e the plunger 2 e the permanent magnet 3 e the dry reed contact 4 80e3a4a8 TRANSMISSION TEMPERATURE SENSOR The transmission oil temperature sensor 1 is located in the shell of the electric valve control unit and is fixed to the conductor tracks Its purpose is to measure the temperature of the transmission oil and pass the temperature to the TCM as an input signal It is temperature dependent resistor PTC 80e3a4be LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 683 OPERATION PARK NEUTRAL CONTACT In selector lever positions P and the park neutral contact 4 is actuated by a cam track which is located on the detent plate The permanent magnet 3 is moved away from the dry reed contact 4 The dry reed contact 4 is opened The TCM receives an electric signal The circuit to the starter in the selector lever positions P and N is closed 80e3a4a8 TRANSMISSION TEMPERATURE SENSOR The temperature of the transmission oil has a consid erable effect on the shifting time and therefore the shift quality By measuring the oil temperature shift operations can be optimized in all temperature ranges The transmission oil temperature sensor 1 is switched in series with the park neutra
30. REMOVAL 1 Remove transmission and torque converter from vehicle 2 Place a suitable drain pan under the converter housing end of the transmission CAUTION Verify that transmission is secure on the lifting device or work surface the center of gravity of the transmission will shift when the torque converter is removed creating an unstable condition The torque converter is a heavy unit Use caution when separating the torque converter from the transmission 3 Pull the torque converter forward until the center hub clears the oil pump seal 4 Separate the torque converter from the transmission INSTALLATION Check converter hub and drive flats for sharp edges burrs scratches or nicks Polish the hub and flats with 320 400 grit paper or crocus cloth if necessary The hub must be smooth to avoid damaging the pump seal at installation 1 Lubricate oil pump seal lip with transmission fluid 2 Place torque converter in position on transmission CAUTION Do not damage oil pump seal or con verter hub while inserting torque converter into the front of the transmission 3 Align torque converter to oil pump seal opening 4 Insert torque converter hub into oil pump 5 While pushing torque converter inward rotate con verter until converter is fully seated in the oil pump gears 6 Check converter seating with a scale and straightedge Surface of converter lugs should be at least 19 mm 3 4 in to rear of straightedge when c
31. 0 120 psi SHIFT VALVE PRESSURE lt LINE PRESSURE SHIFT PRESSURE 0 220 psi SHIFT PRESSURE SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi SHIFT VALVE PRESSURE 50 55 psi LINE PRESSURE WORKING PRES 81384651 Second Gear Engaged 1 1 2 4 5 SHIFT SOLENOID 5 1 2 4 5 COMMAND VALVE 2 1 2 4 5 OVERLAP VALVE 6 DRIVING CLUTCH 1 3 1 2 4 5 SHIFT PRESSURE SHIFT VALVE 7 HOLDING CLUTCH B1 4 1 2 4 5 HOLDING PRESSURE SHIFT VALVE After the gearchange is complete the pressure on the end face of the command valve 5 is reduced via the 1 2 and 4 5 shift solenoid valve 1 and the command valve 5 is pushed back to its basic position Via the holding pressure shift valve 4 the working pressure p A now passes via the command valve 5 to clutch K1 6 The multiple disc holding clutch B1 7 is deactivated unpressurized The spring of the shift pressure shift valve 3 pushes the valve back to its basic position 21 518 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION Shift Phase 2 1 Shift Phase 1 K1 PRES TO REG VAL CONTROL VALVE PRESSURE 105 120 psi LINE PRESSURE 50 350 psi MODULATING PRESSURE 0 120 psi SHIFT VALVE PRESSURE lt LINE PRESSURE OVERLAP PRESSURE SHIFT P
32. 1 TEFLON RINGS 7 DRIVING CLUTCH 2 OUTPUT SHAFT WITH CENTER PLANETARY CARRIER 8 THRUST WASHER 3 NEEDLE BEARING 9 AXIAL NEEDLE BEARING 4 THRUST WASHER 10 SHIM 5 REAR PLANETARY GEAR SET 11 RETAINING RING 6 REAR HOLLOW SHAFT FREEWHEELING CLUTCH F2 Remove upper two visible Teflon rings 1 from output shaft Remove retaining ring 11 shim 10 thrust needle bearing 9 and thrust washer 8 from output shaft Remove clutch K3 7 Remove rear tubular shaft freewheeling clutch F2 6 from output shaft Remove rear gear set 5 with integrated tubular shaft of center gear set from output shaft Remove thrust washer 4 OE e m 21 670 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX ASSEMBLY 80 432 7 Output Shaft with Center and Rear Planetary Geartrain 1 TEFLON RINGS 7 DRIVING CLUTCH 2 OUTPUT SHAFT WITH CENTER PLANETARY CARRIER 8 THRUST WASHER 3 NEEDLE BEARING 9 AXIAL NEEDLE BEARING 4 THRUST WASHER 10 SHIM 5 REAR PLANETARY GEAR SET 11 RETAINING RING 6 REAR HOLLOW SHAFT FREEWHEELING CLUTCH F2 Mount thrust washer 4 with the collar pointing towards the planet carrier Mount the rear gear set 5 on the rear hollow shaft 6 Using grease install lower three Teflon rings 1 in the groove so that the joint stays together Put rear hollow shaft freewheeling clutch F2 6 with rear gear set 5
33. 50 350 psi MODULATING PRESSURE 0 120 psi SHIFT VALVE PRESSURE lt LINE PRESSURE OVERLAP PRESSURE SHIFT PRESSURE 0 220 psi SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi FT VALVI PRESSURE 50 55 psi MOD PRES E LINE PRESSURE WORKING PRES CONTROL VALVE PRESSURE 81384389 Shift Phase 2 1 Shift Phase 2 1 1 2 4 5 SHIFT SOLENOID 5 1 2 4 5 COMMAND VALVE 2 1 2 4 5 OVERLAP VALVE 6 DRIVING CLUTCH 1 3 1 2 4 5 SHIFT PRESSURE SHIFT VALVE 7 HOLDING CLUTCH B1 4 1 2 4 5 HOLDING PRESSURE SHIFT VALVE The pressure in clutch B1 7 acting on the end face of the 1 2 4 5 holding valve 4 forces the valve to up shift against the spring pressure and allows line pressure p A to pass through the command valve 5 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 521 2 1 Shift First Gear Engaged K1 PRES VAL ala t CONTROL VALVE PRESSURE 105 120 psi Prr E LINE PRESSURE 50 350 psi MODULATING PRESSURE 0 120 psi SHIFT VALVE PRESSURE LINE PRESSURE PRESSURE 0 220 psi SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi SHIFT VALVE PRESSURE 50 55 psi
34. 1 Remove electrohydraulic unit from the vehicle Refer to 21 TRANSMISSION AUTOMATIC TRANSMISSION NAG1 ELECTROHYDRAULIC UNIT REMOVAL 2 Remove solenoid caps 1 2 3 Unscrew Torx socket bolts 3 4 Note Pay attention to the different lengths of the Torx socket bolts 4 Remove leaf springs 5 5 Withdraw solenoid valves 6 11 from shift plate 13 Note Check O rings on solenoid valves for dam age and replace if necessary 6 Bend away retaining lug on stiffening rib on trans mission oil temperature sensor 7 Remove electrohydraulic control module 12 from the shift plate 13 21 603 80e3edcc Electrical Unit Components SOLENOID CAP SOLENOID CAP BOLT M6X32 BOLT M6X30 LEAF SPRING MODULATING PRESSURE REGULATING SOLENOID VALVE SHIFT PRESSURE REGULATING SOLENOID 3 4 SHIFT SOLENOID TORQUE CONVERTER LOCK UP SOLENOID 10 1 2 4 5 SHIFT SOLENOID 11 2 3 SHIFT SOLENOID 12 ELECTRICHYDRAULIC CONTROL MODULE 13 SHIFT PLATE 21 604 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 8 Note the locations of the major shift valve group components for assembly reference A Operating and Lubricating Pressure Regulating valves and 2 3 Overlap valve 1 2 4 5 Shift Group and Shift Shift Valve and Regulating Valve Pressure Regulating Valves C 3 4 Shift Group D 2 3 Shift Group TCC
35. 17 turn on the fixed sun gear 21 and increase the torque from the annulus gear 8 to the planetary carrier 13 The planetary carrier 13 moves at a reduced speed in the running direction of the engine Rear Planetary Gear Set The annulus gear 11 turns at a reduced speed due to the mechanical connection to the front planetary carrier 15 The sun gear 23 is held against the housing by the engaged multiple disc holding clutch B2 6 by the locked freewheel F2 24 during acceleration and by the engaged multiple disc clutch K3 12 during deceleration The planetary gears 19 turn on the fixed sun gear 23 and increase the torque from the annulus gear 11 to the planetary carrier 15 The planetary carrier 15 moves at a reduced speed in the running direction of the engine LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 501 Center Planetary Gear Set The annulus gear 10 is driven at the same speed as the rear planetary carrier 15 as a result of a mechanical connection The sun gear 22 is held against the housing by the multiple disc holding clutch B2 6 The planetary pinion gears 18 turn on the fixed sun gear 22 and increase the torque from the annulus gear 10 to the plan etary carrier 14 The output shaft 26 connected to the planetary carrier 14 turns at a reduced speed in the running direction of the engine SECOND GEAR POWERFLOW
36. 7 Leak in area of transmission vent 8 Leak in area of transmission fill tube 1 Check bolt torque on internal bell housing bolts If loose replace fastener and torque to proper level If bolts are to proper torque level check pump outer seal and impeller seal Replace if needed 2 Check connector for damaged cut or missing o rings Replace as needed 3 Check for proper torque on oil pan clamps Check for mis positioned or rolled gasket Repair as needed 3 Replace Free Wheeling Clutch F2 Hollow Shaft and Rear Sun Gear Inner Disc Carrier 4 Remove park guide plug Check for damaged cut or missing o ring If o ring is in good condition install new plug 5 Check for damaged shift lever seal or damaged lever Repair as needed 6 Check for worn damaged slinger seal and output seal Visually inspect output flange seal surface for damage Repair as needed 7 Check fluid level for overfill condition Adjust as needed If fluid level is within specification ride check vehicle Monitor transmission temperature If high operating temperatures are observed fluid may be contaminated or cooling system malfunctioning Change fluid per service manual procedures Refer to cooling system diagnostics if needed 8 Inspect fill tube cap for proper installation Inspect fill tube grommet between case and fill tube for leakage Repair as needed 21 534 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATI
37. AUTOMATIC NAG1 FILTER STANDARD PROCEDURE 3 Filter damaged or missing 3 Check for damaged missing filter or cut missing o ring 4 Valve body malfunction 4 Check for sticky stuck 2 3 shift pressure valve or regulator valve 5 or B2 clutch damaged 5 Disassemble transmission inspect for damaged K3 or B2 clutch Repair as needed Slips on 4 5 upshift 1 Transmission adaptation 1 Check for latest level TCM calibration software Perform the TCM adaptation procedure Refer to 8 ELECTRICAL ELECTRONIC CONTROL MODULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE 2 Fluid level low 2 Check and adjust fluid level Refer to 21 TRANSMISSION AUTOMATIC NAG1 FILTER STANDARD PROCEDURE 3 Filter damaged or missing 3 Check for damaged missing filter or cut missing o ring 4 Valve body malfunction 4 Check for sticky stuck 2 3 shift pressure valve or regulator valve 5 B1 or K1 clutch damaged 5 Disassemble transmission inspect for damaged B1 or K1 clutch Repair as needed In gear shudder on heavy 1 Fluid level low 1 Check and adjust fluid level acceleration Refer to 21 TRANSMISSION AUTOMATIC NAG1 FILTER STANDARD PROCEDURE 2 Filter damaged or missing 2 Check for damaged missing filter or cut missing o ring No Drive engagement 1 Customer shifting into N at vehicle 1 Instruct the customer that following a shift to N speeds greater than 25mph and they should not shift in
38. Ex e eee 656 PUMP OIL DESCRIPTION EE RE RR OE 656 OPERATION 657 DISASSEMBLY x exe va 657 INSPECTION 658 ASSEMBLY 2 658 BEARING OUTPUT SHAFT REMOVAL ee ee Soe RS 659 INSTALLATION 661 SEAL OUTPUT SHAFT REMOVAL d bane 663 INSTALLATION 663 LOCK REMOVAL ened 665 INSTALLATION 666 GEARTRAIN PLANETARY DESCRIPTION ds 668 OPERATION 668 DISASSEMBLY 669 ASSEMBLY be ERE OE 670 21 496 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX MECHANISM SHIFT TRANSMISSION TEMPERATURE SENSOR 682 DESCRIPTION 4 671 OPERATION OPERATION 2484554 672 PARK NEUTRAL CONTACT 683 REMOVAL i ed RR Ee 673 TRANSMISSION TEMPERATURE SENSOR 683 INSTALLATION 675 CONVERTER TORQUE SOLENOID DESCRIPTION 5545 685 DESCRIPTION 677 OPERATION 690 OPERATION 22225 2 5 RR E ede 679 REMOVAL ES 692 CONTACT TEMPERATURE SENSOR PARK INSTALLATION 692 NEUTRAL SEAL TORQUE CONVERTER HUB DESCRIPTION REMOVAL 693 PARK NEUTRAL CONTACT
39. FRONT PLANETARY ANNULUS GEAR 9 DRIVING CLUTCH K2 10 CENTER PLANETARY ANNULUS GEAR 11 REAR PLANETARY ANNULUS GEAR 12 DRIVING CLUTCH 13 FRONT PLANETARY CARRIER A ENGINE SPEED Fourth Gear Powerflow 14 CENTER PLANETARY CARRIER 15 REAR PLANETARY CARRIER 16 TORQUE CONVERTER STATOR 17 FRONT PLANETARY PINION GEARS 18 CENTER PLANETARY PINION GEARS 19 REAR PLANETARY PINION GEARS 20 FREEWHEELING CLUTCH F1 21 FRONT PLANETARY SUN GEAR 22 CENTER PLANETARY SUN GEAR 23 REAR PLANETARY SUN GEAR 24 FREEWHEELING CLUTCH F2 25 INPUT SHAFT 26 OUTPUT SHAFT B TRANSMISSION INPUT SPEED 21 506 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX A LIB 80e2acb9 Fourth Gear Powerflow 1 TORQUE CONVERTER LOCK UP CLUTCH 14 CENTER PLANETARY CARRIER 2 TORQUE CONVERTER TURBINE 15 REAR PLANETARY CARRIER 3 TORQUE CONVERTER IMPELLER 16 TORQUE CONVERTER STATOR 4 HOLDING CLUTCH 1 17 FRONT PLANETARY PINION GEARS 5 HOLDING CLUTCH B3 18 CENTER PLANETARY PINION GEARS 6 HOLDING CLUTCH B2 19 REAR PLANETARY PINION GEARS 7 DRIVING CLUTCH 20 FREEWHEELING CLUTCH F1 8 FRONT PLANETARY ANNULUS GEAR 21 FRONT PLANETARY SUN GEAR 9 DRIVING CLUTCH K2 22 CENTER PLANETARY SUN GEAR 10 CENTER PLANETARY ANNULUS GEAR
40. Remove and discard the cable adjuster lock pin if a new cable is being installed Ensure that the cable is free to self adjust by pushing cable rearward and releasing Push lock button down until it snaps in place The lock should be 1 2mm below the surface of the cylinderical portion of the cable adjustment housing 21 586 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX BTSI FUNCTION CHECK 1 2 Verify removal of ignition key allowed in PARK position only When the shift lever is in PARK the ignition key cylinder should rotate freely LOCK position When the shifter is in any other position the ignition key should not rotate to the LOCK position Shifting out of PARK should not be possible when the ignition key cylinder is in the ACC position and the brake pedal is not depressed Shifting out of PARK should not be possible while applying normal force on the shift lever and ignition key cyl inder is in the ACC ON or START positions unless the foot brake pedal is depressed approximately 1 2 inch 12mm Shifting out of PARK should not be possible when the ignition key cylinder is in the LOCK position regardless of the brake pedal position Shifting between any gears NEUTRAL or into PARK may be done without depressing foot brake pedal with ignition switch in ACC ON or START positions The floor shifter lever and gate positions should be in a
41. locks the sun gear 12 against the housing The planetary pinion gears 11 turn on the sun gear 12 If the multiple disc holding clutch B3 4 is actuated via the piston 6 the planetary carrier 9 and the annulus gear 10 are locked When the multiple disc brake B3 4 is actuated the direction of rotation is reversed LX LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 629 B1 HOLDING CLUTCH DISASSEMBLY 1 Remove the teflon rings 1 from the B1 plate car rier hub 2 812d4767 80e3f889 Holding Clutch B1 HOLDING CLUTCH B1 OUTER CARRIER 5 DISC SPRING 1 2 PISTON 6 MULTIPLE DISC PACK 3 DISC SPRING 7 SNAP RING 4 SNAP RING 8 MULTI USE SPRING COMPRESSOR 8900 21 630 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX Remove snap ring 7 Remove multiple disc pack 6 and disc spring 5 from outer multiple disc carrier Note which clutch disc is removed just prior to the disc spring 5 for re assembly If the clutch discs are re used this disc must be returned to its original position on top of the disc spring Place the Multi use Spring Compressor 8900 8 on disc spring 3 and compress the spring until the snap ring 4 is exposed Remove snap ring 4 Remove piston 2 from the outer multiple disc carrier by carefully blowing compressed air into the bore A ASSEMBLY
42. 19 REAR PLANETARY PINION GEARS 7 DRIVING CLUTCH 20 FREEWHEELING CLUTCH F1 8 FRONT PLANETARY ANNULUS GEAR 21 FRONT PLANETARY SUN GEAR 9 DRIVING CLUTCH K2 22 CENTER PLANETARY SUN GEAR 10 CENTER PLANETARY ANNULUS GEAR 23 REAR PLANETARY SUN GEAR 11 REAR PLANETARY ANNULUS GEAR 24 FREEWHEELING CLUTCH F2 12 DRIVING CLUTCH 25 INPUT SHAFT 13 FRONT PLANETARY CARRIER 26 OUTPUT SHAFT A ENGINE SPEED D SECOND GEAR RATIO B TRANSMISSION INPUT SPEED E FIXED PARTS C FIRST GEAR RATIO Torque from the torque converter is increased via the input shaft 25 and the center and rear planetary gearset and transferred to the output shaft 26 Front Planetary Gear Set The planetary carrier 13 and sun gear 21 are connected via the engaged multiple disc clutch K1 7 The plan etary gearset is therefore blocked and turns as a closed unit at the input speed due to the mechanical connection of the annulus gear 8 and input shaft Rear Planetary Gear Set The annulus gear 11 turns at the input speed as a result of the mechanical connection to the front planetary carrier 13 The sun gear 23 is held against the housing by the engaged multiple disc holding clutch B2 6 by the locked freewheel F2 24 during acceleration and by the engaged multiple disc clutch K3 12 during deceleration The planetary pinion gears 19 turn on the fixed sun gear 23 and increase the torque from the annulus gear 11 to
43. 2 N LINE CONTROL SHIFT VALVE SHIFT TC IN OUT MODULATING LUBE SHIFT SUMP PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE 5 40 psi PRESSURE 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi CONTROL 105 120 psi SOLENOID VALVE 0 120 psi 810baf9b HYDRAULIC FLOW IN DRIVE FIRST GEAR 21 566 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 1 KI K2 B3 27 n 2 3 COMMAND 3 4 COMMAND B2 SHIFT VALVE ooo 1 2 4 5 HOLDING 2 3 HOLDING 16 1 2 4 5 SHIFT PRES 2 3 SHIFT PRES 18 2 3 OVERLAP 1 2 4 5 OVERLAP 2185 50L IN Po 5 o o 2 LP SOL IN PRES T C LIMIT 3 VB DRIVE D1 D2 COOLER LX LINE PRESSURE 50 350 psi CONTROL VALVE PRESSURE 105 120 psi OUT SHIFT VALVE PRESSURE 50 55 psi SHIFT PRESSURE 0 220 psi MODULATING PRESSURE 0 120 psi TC IN 50 100 psi OUT 10 45 psi LUBE 5 40 psi TRANSITION SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120psi 810bafa9 HYDRAULIC FLOW IN DRIVE FIRST TO SECOND GEAR TRANSITION LX 1 2 4 5 COMMAND 14 1 2 4 5 HOLDING 18 214 5 OVERLAP ee LP SOL IN PRES AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION K2 B3 K3 2 3 COMMAND 3 4 COMMAND 2 3 HOLDING 3 4 HOLDING 2 3 SHIFT PRES 2 3 OVERLAP DAMPER 215 801 IN S S
44. 2 for freewheel 4 Press freewheeling clutch 3 out of sun gear 5 Check O rings 6 replace if necessary 21 620 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 6 Check the anti friction bearing 2 in the rear plan etary sun gear for damage Replace as necessary 80 4383 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 621 ASSEMBLY 67 2 Ke 80e3f7da Freewheeling Clutch F2 1 HOLLOW SHAFT 4 K3 INNER DISC CARRIER AND REAR PLANETARY SUN GEAR 2 F2 CLUTCH SNAP RING 5 RETAINING RING 3 FREEWHEELING CLUTCH F2 6 O RINGS Note The side of the freewheeling clutch F2 3 with the markings directional arrow part number etc must be up when the clutch is installed in the sun gear 4 1 Press freewheeling clutch F2 3 into sun gear 4 2 Install snap ring 2 for freewheeling clutch 3 Check O rings 6 on hollow shaft replace if necessary 4 Install rear sun gear 4 with internally toothed disc carrier and rear freewheeling clutch 3 onto the hollow shaft 5 Verify proper operation of the freewheeling clutch F2 When the assembly is held with the F2 clutch snap ring upward it should be possible to rotate the hollow shaft counter clockwise 6 Install retaining ring 5 onto hollow shaft 1 21 62
45. 2 0 110 0 126 12050 2933 2 0414 0130 K1 Clutch a rings 2 6 2 9 3 2 a 3 8 and NE NEM 0 114 0 126 0 138 4 1 0 150 0 162 21 580 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX K2 Clutch Snap rings 2 3 2 6 2 9 3 2 3 5 and 0 091 0 102 0 114 0 126 3 8 0 138 0 150 K3 Clutch Clearance 2 3 2 7 0 091 0 106 Double Sided Friction 24 28 0 095 0 110 Discs 2529 0 095 0 14 Clutch Clearance 2827 0 091 0 106 Single Sided Friction Discs 24 28 0 095 0 110 2529 00990714 Clutch Snap rings 2 0 2 3 2 6 2 9 3 2 and 0 079 0 091 0 102 0 114 3 5 0 126 0 138 TORQUE SPECIFICATIONS poe Lm goce Converter Bolt Transmission 177 Housing to Converter Housing Bolts Bolts Oil Pan Pan Screws Valve END Housing Side Cover 42 2 4 Nut Shifter Mechanism to Floor Pan LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 581 SPECIAL TOOLS AUTOMATIC TRANSMISSION NAG1 Dial Indicator C 3339 Driver Handle C 4171 Bar Gauge 6311 80e490db Compressor Multi use Spring 8900 21 582 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 80e490e0 Tool Pressing 8901 Installer Bearing 9287 Installer Seal 8902A N DETAIL TIP TIP
46. 5 T C LIMIT L U CONT TIC OUT COOLER L U LX 27 B2 SHIFT VALVE 3 4 SHIFT PRES x s Ts SHIFT P REG 25 SUMP DRIVE D4 TO D5 TRANSITION Em SESS pue 2 SS LINE CONTROL SHIFT VALVE SHIFT TC IN TC OUT OVERLAP MODULATING LUBE SHIFT PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE PRESSURE 5 40 psi PRESSURE 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi CONTROL 105 120 psi SOLENOID VALVE 0 120 psi 810bb20a HYDRAULIC FLOW IN DRIVE FOURTH TO FIFTH GEAR TRANSITION LX 1 2 4 5 COMMAND 1 2 4 5 HOLDING 16 SHIFT PRES 18 1 2 4 5 OVERLAP 2 LP SOL IN PRES 21 2 3 COMMAND 2 3 HOLDING 00 AS SOS 2 3 SHIFT PRES 1 DAMPER N 9 NS SOLIN P 2004 5 S T C LIMIT T C OUT AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 3 4 COMMAND zr 3 4 HOLDING 21 573 27 0000 B2 SHIFT VALVE 3 4 SHIFT PRES SHIFT P REG ETE ER SHIFT VALVE 105 120 psi SHIFT LINE CONTROL TC IN TC OUT MODULATING PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi 52555 LUBE 5 40 psi HYDRAULIC FLOW IN
47. AND DIAGRAMS B1 1 2 4 5 COMMAND 1 2 4 5 HOLDING 18 TR A LP SOL IN PRES lt se cee ee ew ree te K1 K2 2 3 COMMAND 2 3 HOLDING 2 3 SHIFT PR SERVICE INFORMATION LX IOP ROE 2 82 SHIFT VALVE 3 4 HOLDING 2 3 OVERLAP lt 1 DAMPER 23 x 21NS SOL IN Plo o o ol XQ 9 LIMIT TIC OUT COOLER LINE PRESSURE 50 350 psi CONTROL VALVE PRESSURE 105 120 psi SHIFT VALVE PRESSURE 50 55 psi SHIFT PRESSURE 0 220 psi OUT 10 45 psi MODULATING PRESSURE 0 120 psi 50 100 psi HYDRAULIC FLOW IN PARK JR CH See Pee SHIFT P REG imm 3 ERREZAK EEEE LUBE 5 40 psi SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi 810 LX 1 214 5 COMMAND 1 2 4 5 HOLDING 214 5 OVERLAP LP SOL IN PRES AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION K2 B3 3 4 COMMAND 2 3 COMMAND 2 3 HOLDING 3 4 HOLDING 2 3 OVERLAP lt o 21NS SOLIN Pl 55559 2 T C LIMIT TiC OUT COOLER 2 3 4 SHIFT PRES PIP 3 4 OVERLAP 21 559 27 2 SHIFT VALVE SHIFT REG 25 SUMP REVE
48. DIAGNOSIS AND TESTING EFFECTS OF INCORRECT FLUID LEVEL 615 CAUSES OF BURNT FLUID 615 FLUID CONTAMINATION 615 STANDARD PROCEDURE CHECK OIL LEVEL 615 TRANSMISSION FILL 616 FLUID FILTER SERVICE 617 CLUTCH FREEWHEELING DESCRIPTION 5 618 OPERATION eger 618 DISASSEMBLY 619 ASSEMBEY z refarado od ate rw rede 621 21 495 CABLE GEARSHIFT DIAGNOSIS AND TESTING GEARSHIFT CABLE 622 REMOVAL cox ads 622 INSTALLATION iiini swine amaa ee 624 ADJUSTMENTS GEARSHIFT CABLE 626 CLUTCHES HOLDING DESCRIPHON 55595 627 OPERATION 628 B1 HOLDING CLUTCH DISASSEMBLY 629 ASSEMBLY 630 B2 HOLDING CLUTCH DISASSEMBLY 634 ASSEMBLY were EE 636 CLUTCHES INPUT DESCRIPTION 424 44 640 OPERATION 641 K1 INPUT CLUTCH DISASSEMBLY Re 642 ASSEMBLY tues ERR p 644 K2 INPUT CLUTCH DISASSEMBLY 647 ASSEMBLY ese 649 K3 INPUT CLUTCH DISASSEMBLY RR REA sale ea 652 ASSEMBLY ese ERES 653 SENSORS INPUT SPEED DESCRIPTION 655 OPERATION
49. FILTER STANDARD PROCEDURE 3 Filter damaged or missing 3 Check for damaged missing filter or cut missing o ring 4 Valve body malfunction 4 Check for sticky stuck 2 3 shift pressure valve or regulator valve 5 F1 or K1 clutch damaged 5 Disassemble transmission inspect for damaged F1 or K1 clutch Repair as needed Slips on 2 3 upshift 1 Transmission adaptation 1 Check for latest level TCM calibration software Perform the TCM adaptation procedure Refer to 8 ELECTRICAL ELECTRONIC CONTROL MODULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE 2 Fluid level low 2 Check and adjust fluid level Refer to 21 TRANSMISSION AUTOMATIC NAG1 FILTER STANDARD PROCEDURE 3 Filter damaged or missing 3 Check for damaged missing filter or cut missing o ring 4 Valve body malfunction 4 Check for sticky stuck 2 3 shift pressure valve or regulator valve 5 F2 or B2 clutch damaged 5 Disassemble transmission inspect for damaged F2 or B2 clutch Repair as needed LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 531 CONDITION POSSIBLE CAUSES CORRECTION Slips on 3 4 upshift 1 Transmission adaptation 1 Check for latest level TCM calibration software Perform the TCM adaptation procedure Refer to 8 ELECTRICAL ELECTRONIC CONTROL MODULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE 2 Fluid level low 2 Check and adjust fluid level Refer to 21 TRANSMISSION
50. FREEWHEELING CLUTCH F2 12 DRIVING CLUTCH 25 INPUT SHAFT 13 FRONT PLANETARY CARRIER 26 OUTPUT SHAFT A ENGINE SPEED D SECOND GEAR RATIO B TRANSMISSION INPUT SPEED E FIXED PARTS C FIRST GEAR RATIO 21 512 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION _ LX ge ER D 80e2b9d8 Reverse Gear Powerflow Limp In 1 TORQUE CONVERTER LOCK UP CLUTCH 14 CENTER PLANETARY CARRIER 2 TORQUE CONVERTER TURBINE 15 REAR PLANETARY CARRIER 3 TORQUE CONVERTER IMPELLER 16 TORQUE CONVERTER STATOR 4 HOLDING CLUTCH 1 17 FRONT PLANETARY PINION GEARS 5 HOLDING CLUTCH B3 18 CENTER PLANETARY PINION GEARS 6 HOLDING CLUTCH B2 19 REAR PLANETARY PINION GEARS 7 DRIVING CLUTCH 20 FREEWHEELING CLUTCH F1 8 FRONT PLANETARY ANNULUS GEAR 21 FRONT PLANETARY SUN GEAR 9 DRIVING CLUTCH K2 22 CENTER PLANETARY SUN GEAR 10 CENTER PLANETARY ANNULUS GEAR 23 REAR PLANETARY SUN GEAR 11 REAR PLANETARY ANNULUS GEAR 24 FREEWHEELING CLUTCH F2 12 DRIVING CLUTCH 25 INPUT SHAFT 13 FRONT PLANETARY CARRIER 26 OUTPUT SHAFT A ENGINE SPEED D SECOND GEAR RATIO B TRANSMISSION INPUT SPEED E FIXED PARTS C FIRST GEAR RATIO Torque from the torque converter is increased via the input shaft 25 and all three planetary gearsets and trans ferred with reversed direction of rotation to the output shaf
51. GEAR 22 CENTER PLANETARY SUN GEAR 23 REAR PLANETARY SUN GEAR 24 FREEWHEELING CLUTCH F2 25 INPUT SHAFT 26 OUTPUT SHAFT D SECOND GEAR RATIO E THIRD GEAR RATIO F FIXED PARTS Torque from the torque converter is increased via the input shaft 25 and all three planetary gearsets and trans ferred with reversed direction of rotation to the output shaft 26 Front Planetary Gear Set The annulus gear 8 is driven by the input shaft 25 The sun gear 21 is held against the housing by the locked freewheel F1 20 during acceleration and via the engaged multiple disc holding clutch B1 4 during deceleration The planetary pinion gears 17 turn on the fixed sun gear 21 and increase the torque from the annulus gear 8 to the planetary carrier 13 The planetary carrier 13 moves at a reduced speed in the running direction of the engine Rear Planetary Gear Set The planetary carrier 15 is held against the housing by the engaged multiple disc holding clutch B3 5 The annu lus gear 11 turns at a reduced speed due to the mechanical connection to the front planetary carrier 13 The planetary gears 19 turn between the annulus gear 11 and the sun gear 23 The direction is reversed by the held planetary carrier 15 so that the sun gear 23 turns in the opposite direction to the running direction of the engine LX AUTOMATIC TRANSMISSION SERVICE INFORMAT
52. LX 80e2ac69 First Gear Powerflow 1 TORQUE CONVERTER LOCK UP CLUTCH 2 TORQUE CONVERTER TURBINE 3 TORQUE CONVERTER IMPELLER 4 HOLDING CLUTCH 1 5 HOLDING CLUTCH B3 6 HOLDING CLUTCH B2 7 DRIVING CLUTCH 8 FRONT PLANETARY ANNULUS GEAR 9 DRIVING CLUTCH K2 10 CENTER PLANETARY ANNULUS GEAR 11 REAR PLANETARY ANNULUS GEAR 12 DRIVING CLUTCH 13 FRONT PLANETARY CARRIER ENGINE SPEED TRANSMISSION INPUT SPEED C FIRST GEAR RATIO 14 CENTER PLANETARY CARRIER 15 REAR PLANETARY CARRIER 16 TORQUE CONVERTER STATOR 17 FRONT PLANETARY PINION GEARS 18 CENTER PLANETARY PINION GEARS 19 REAR PLANETARY PINION GEARS 20 FREEWHEELING CLUTCH F1 21 FRONT PLANETARY SUN GEAR 22 CENTER PLANETARY SUN GEAR 23 REAR PLANETARY SUN GEAR 24 FREEWHEELING CLUTCH F2 25 INPUT SHAFT 26 OUTPUT SHAFT D SECOND GEAR RATIO E THIRD GEAR RATIO F FIXED PARTS Torque from the torque converter is increased via the input shaft 25 and all three planetary gearsets and trans ferred to the output shaft 26 Front Planetary Gear Set The annulus gear 8 is driven by the input shaft 25 The sun gear 21 is held against the housing by the locked freewheel F1 20 during acceleration and via the engaged multiple disc holding clutch B1 4 during deceleration The planetary pinion gears
53. LX 80e3b0fb HEAT SHIELD ELECTROHYDRAULIC UNIT BOLT OIL FILTER OIL PAN CLAMPING ELEMENT BOLT DRAIN PLUG 9 DRAIN PLUG GASKET 10 13 PIN PLUG CONNECTOR 11 BOLT 12 GUIDE BUSHING 1 80e3f7ca LX INSTALLATION 1 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 553 Check torque converter hub and hub drive flats for sharp edges burrs scratches or nicks Polish the hub and flats with 320 400 grit paper and crocus cloth if necessary The hub must be smooth to avoid damaging pump seal at installation If a replacement transmission is being installed transfer any components necessary such as the manual shift lever and shift cable bracket from the original transmission onto the replacement transmission Lubricate oil pump seal lip with transmission fluid Place torque converter 1 in position in transmis sion 2 CAUTION Do not damage oil pump seal or con verter hub while inserting torque converter into the front of the transmission 5 6 7 9 10 Align torque converter to oil pump seal opening Insert torque converter hub into oil pump While pushing torque converter inward rotate con verter until converter is fully seated in the oil pump gears Check converter seating with a scale and straight edge A Surface of converter lugs should be at least 19 mm 3 4 in to rear of straightedge
54. Lock up and B2 Regulat ing Valves Note Pay great attention to cleanliness for all work on the shift plate Fluffy cloths must not be used Leather cloths are particularly good After dismantling all parts must be washed and blown out with compressed air noting that parts may be blown away 9 Unbolt leaf spring 5 10 Unscrew Torx bolts 1 11 Remove valve housing 2 from valve body 4 12 Remove sealing plate 3 80e3ee2b 80e3ee93 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 605 13 Remove the strainers 1 2 for the modulating pressure shift pressure control solenoid valves from the valve housing 14 Remove the strainer 1 in the inlet to torque con verter lock up control solenoid valve Note A total of 12 valve balls are located in the valve body four made from plastic 4 and eight from steel 1 3 15 Note the location of all check balls 1 3 4 and the central strainer 2 for re installation Remove all check balls 1 3 4 and the central strainer 80e3edf0 80e3ee50 80e3ee77 21 606 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 2 80e3eeb1 Valve Body
55. TRANSMISSION SERVICE INFORMATION LX GEARTRAIN PLANETARY DESCRIPTION Three planetary gear sets are used to produce the dif ferent gear ratios These are located in the mechanical part of the transmission as the front middle and rear planetary gear sets OPERATION The annulus gear 1 and sun gear 3 elements of a planetary gear system are alternately driven and braked by the actuating elements of the multi plate clutch and multiple disc brake The planetary pinion gears 2 can turn on the internal gearing of the annu lus gear 1 and on the external gearing of the sun gear 3 This allows for a variety of gear ratios and the reversal of the rotation direction without the need for moving gear wheels or shift collars When two components of the planetary gear set are locked together the planetary gear set is locked and turns as a closed unit The torque and engine speed are converted according to the lever ratios and the ratio of the number of teeth on the driven gears to that on the drive gears and is referred to as the gear ratio The overall ratio of a number of planetary gear sets connected in series is obtained by multiplying the partial ratios 80e2e625 80e2e625 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 669 DISASSEMBLY 80 432 7 Output Shaft with Center and Rear Planetary Geartrain
56. by the same speeds of the annulus gear 10 and the sun gear 22 and it turns as a closed unit FIFTH GEAR POWERFLOW 80 2 1 1 TORQUE CONVERTER LOCK UP CLUTCH 2 TORQUE CONVERTER TURBINE 3 TORQUE CONVERTER IMPELLER 4 HOLDING CLUTCH 1 5 HOLDING CLUTCH B3 6 HOLDING CLUTCH B2 7 DRIVING CLUTCH 8 FRONT PLANETARY ANNULUS GEAR 9 DRIVING CLUTCH K2 10 CENTER PLANETARY ANNULUS GEAR 11 REAR PLANETARY ANNULUS GEAR 12 DRIVING CLUTCH 13 FRONT PLANETARY CARRIER A ENGINE SPEED B TRANSMISSION INPUT SPEED C FIRST GEAR RATIO Fifth Gear Powerflow 14 CENTER PLANETARY CARRIER 15 REAR PLANETARY CARRIER 16 TORQUE CONVERTER STATOR 17 FRONT PLANETARY PINION GEARS 18 CENTER PLANETARY PINION GEARS 19 REAR PLANETARY PINION GEARS 20 FREEWHEELING CLUTCH F1 21 FRONT PLANETARY SUN GEAR 22 CENTER PLANETARY SUN GEAR 23 REAR PLANETARY SUN GEAR 24 FREEWHEELING CLUTCH F2 25 INPUT SHAFT 26 OUTPUT SHAFT D SECOND GEAR RATIO E THIRD GEAR RATIO F FIXED PARTS 21 508 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 80 2 5 1 TORQUE CONVERTER LOCK UP CLUTCH 2 TORQUE CONVERTER TURBINE 3 TORQUE CONVERTER IMPELLER 4 HOLDING CLUTCH 1 5 HOLDING CLUTCH B3 6 HOLDING CLUTCH B2 7 DRIVING CLUTCH 8 FRONT PLAN
57. currently engaged gear in range D is indicated in the instrument cluster display and the shift range is limited to this gear Tipping the selector lever toward one time after another The shift range is increased by one gear each time and the increased shift range is displayed in the instrument cluster possibly the transmission upshifts to a faster gear Tipping the selector lever toward several times The shift range is increased by one gear each time the lever is tipped until the shift range ends up in D Tipping the selector lever toward and holding it in this position The shift range is extended immedi ately to D shift ranges are indicated in ascending sequence possibly the transmission upshifts to a faster gear due to the extension of the shift range REMOVAL 1 Remove any necessary console parts for access to shift lever assembly and shifter cables Refer to 23 BODY INTERIOR FLOOR CONSOLE REMOVAL If necessary remove the bolts holding the shield covering the gearshift and park lock cables to the floorpan and remove the shield Shift transmission into PARK Disconnect the transmission shift cable 1 at shift lever 3 and shifter assembly bracket 2 Remove the shift cable retainer 2 from the notch in the shifter assembly 2 8134800b 21 674 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 6 Verify the key is in the LOCK position a
58. family of transmissions depending on the transmisson variation being used in a specific vehicle Some examples of the marketing names are W5A300 W5A380 W5A580 The marketing name can be interpreted as follows e W A transmission using a hydraulic torque converter e 5 5 forward gears e A Automatic Transmission e 580 Maximum input torque capacity in Newton meters The gears are actuated electronically hydraulically The gears are shifted by means of an appropriate combination of three multi disc holding clutches three multi disc driving clutches and two freewheeling clutches Electronic transmission control enables precise adaptation of pressures to the respective operating conditions and to the engine output during the shift phase which results in a significant improvement in shift quality Furthermore it offers the advantage of a flexible adaptation to various vehicle and engines Basically the automatic transmission with electronic control offers the following advantages e Reduces fuel consumption e Improved shift comfort e More favourable step up through the five gears e Increased service life and reliability e Lower maintenance costs TRANSMISSION IDENTIFICATION The transmission can be generically identified visually by the presence of a round 13 way connector located near the front corner of the transmission oil pan on the right side Specific transmission information can be found stamped into a pad on the lef
59. housing 18 Stand the transmission upright on the converter housing Be sure to use suitable spacers between the bench surface and the converter housing since the input shaft protrudes past the front surface of the housing 19 Remove the remaining bolts holding the transmission housing to the converter housing 20 Remove the transmission housing from the converter housing 21 Remove output shaft with center and rear gear set and clutch K3 3 22 Remove thrust needle bearing 4 and thrust washer 5 23 Remove input shaft with clutch K2 and front gear set 6 24 Remove clutch K1 1 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 543 80e3f6de Remove Holding Clutch B1 and Oil Pump 1 BOLTS M6X32 4 BOLTS M8X35 2 CONVERTER HOUSING 5 HOLDING CLUTCH B1 3 INTERMEDIATE PLATE 6 OIL PUMP 25 Unscrew Torx socket bolts 4 and remove oil pump 6 Screw two opposed bolts into the oil pump housing and press the oil pump out of the converter housing by applying light blows with a plastic hammer 26 Remove and discard the torque converter hub seal and the oil pump outer o ring seal from the oil pump 27 Unscrew Torx socket bolts 1 and remove multiple disc holding clutch B1 5 from converter housing Screw two opposed bolts into the multiple disc holding clutch B1 5 and separate from the converter housing by applying light blows with a plastic hammer 28 Detach intermediat
60. is reached at the holding pressure shift valve 4 this valve switches over 21 516 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX Shift Phase 1 2 Shift Phase 2 9 0 lt K1 PRES TO REG VAL CONTROL VALVE PRESSURE 105 120 psi LINE PRESSURE 50 350 psi RODEN SETI MODULATING PRESSURE 0 120 psi SHIFT VALVE PRESSURE lt LINE PRESSURE OVERLAP PRESSURE SHIFT PRESSURE 0 220 psi SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi FT VALVI PRESSURE 50 55 psi MOD PRES LINE PRESSURE WORKING PRES CONTROL VALVE PRESSURE 81384267 Shift Phase 1 2 Shift Phase 2 1 1 2 4 5 SHIFT SOLENOID 5 1 2 4 5 COMMAND VALVE 2 1 2 4 5 OVERLAP VALVE 6 DRIVING CLUTCH 1 3 1 2 4 5 SHIFT PRESSURE SHIFT VALVE 7 HOLDING CLUTCH B1 4 1 2 4 5 HOLDING PRESSURE SHIFT VALVE The B1 7 pressure acting on the end face of the shift pressure shift valve 3 is replaced by the working pressure p A The shift pressure is also routed to the spring end of the holding valve 4 and the holding valve downshifts The line pressure is then routed to the command valve 5 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 517 Second Gear Engaged lt K1 PRES VAL VALVE PRESSURE 105 120 psi LINE PRESSURE 50 350 psi MODULATING PRESSURE
61. o 7 80e3f7ce Install B2 B3 and Parking Gear 1 SNAP RING 5 2 HOLDING CLUTCH B3 DISCS 6 TRANSMISSION HOUSING 3 SPRING WASHER 7 BOLTS 8 60 4 HOLDING CLUTCH B2 1 Insert parking lock gear 5 2 Install multiple disc holding clutch B2 4 in transmission housing 6 3 Screw in both Torx socket bolts 7 Tighten the bolts to 16 N m 141 in lbs 21 546 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION Note During the measurement the snap ring 7 must contact the upper bearing surface of the groove in the outer multiple disc carrier 8 Note Pay attention to sequence of discs If the original clutch discs are reused be sure to return the disc identified on disassembly as belonging on top of the spring washer 4 to its original loca tion Place new friction multiple discs in ATF fluid for one hour before installing 4 Insert and measure spring washer 4 and multiple disc pack B3 2 6 a Put multiple discs for multiple disc holding clutch B3 together in the sequence shown in the illustration and insert individually b CAUTION Apply only light pressure less than 10 3 155 of force to the clutch pack when suring the clutch clearance with the feeler gauge LX 1 2 3 4 2777 7 8 L 6 80 40236 1 OUTER DISC 6 5 5 PISTON 0 256 IN 2 OUTER DISCS 1 8 6 FRICTION DISCS
62. of movement and shavings Install the screws to hold the side covers to the valve body Tighten the screws to 4 35 in lbs 80e3eec2 Valve Housing Components 2 3 OVERLAP REGULATING VALVE SLEEVE AND PISTON 6 3 4 SHIFT PRESSURE SHIFT VALVE VALVE HOUSING 7 3 4 OVERLAP REGULATING VALVE SLEEVE AND PISTON SELECTOR VALVE 8 OPERATING PRESSURE REGULATING VALVE 3 4 HOLDING PRESSURE SHIFT VALVE 9 LUBRICATING PRESSURE REGULATING VALVE 3 4 COMMAND VALVE AUN 4 Install all valves and springs into the valve housing 2 Check all valves for ease of movement and shavings 5 Install the screws to hold the side covers to the valve housing Tighten the screws to 4 35 in lbs 21 610 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX Note A total of 12 valve balls are located in the valve body four made from plastic 4 and eight from steel 1 3 6 Install all check balls 1 3 4 and the central strainer 2 7 Install the strainer 1 in the inlet to torque con verter lock up control solenoid valve 8 Position the sealing plate 3 onto the valve body 4 9 Install the valve housing 2 onto the valve body 4 and sealing plate 3 10 Install the shift plate Torx bolts 1 Tighten the bolts to 8 71 in lbs 11 Install leaf spring 5
63. replaced whenever a failure generates sludge and debris This is necessary because normal converter flushing procedures will not remove all contaminants STANDARD PROCEDURE CHECK OIL LEVEL 1 Verify that the vehicle is parked on a level surface 2 Remove the dipstick tube cap WARNING Risk of accident from vehicle starting off by itself when engine running Risk of injury from con tusions and burns if you insert your hands into the engine when it is started or when it is running Secure vehicle to prevent it from moving off by itself Wear properly fastened and close fitting work clothes Do not touch hot or rotating parts 3 Actuate the service brake Start engine and let it run at idle speed in selector lever position P 21 616 AUTOMATIC TRANSMISSION SERVICE INFORMATION LX 4 Shift through the transmission modes several times with the vehicle stationary and the engine idling 5 Warm up the transmission wait at least 2 minutes and check the oil level with the engine running Push the Oil Dipstick 9336 into transmission fill tube until the dipstick tip contacts the oil pan and pull out again read off oil level repeat if necessary Note The dipstick will protrude from the fill tube when installed 90 85 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 Oil Level mm
64. the engaged multiple disc clutch K1 7 The plan etary gearset is therefore locked and turns as a closed unit at the input speed due to the mechanical connection of the annulus gear 8 and input shaft 25 Rear Planetary Gear Set The multiple disc clutch K2 9 is engaged and transfers the input speed of the input shaft 25 to the planetary carrier 15 via the annulus gear 10 The annulus gear 11 turns in the same way as the planetary carrier 15 due to the mechanical connection with the locked front planetary gearset This planetary gearset is therefore locked and turns as a closed unit Center Planetary Gear Set The annulus gear 10 turns at the input speed as a result of the engaged multiple disc clutch K2 9 The sun gear 22 is held against the housing by the multiple disc holding clutch B2 6 The planetary pinion gears 18 turn on LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 505 the fixed sun gear 22 and increase the torque from the annulus gear 10 to the planetary carrier 14 The output shaft 26 connected to the planetary carrier 14 turns at a reduced speed in the running direction of the engine FOURTH GEAR POWERFLOW CEB 80e2acb5 1 TORQUE CONVERTER LOCK UP CLUTCH 2 TORQUE CONVERTER TURBINE 3 TORQUE CONVERTER IMPELLER 4 HOLDING CLUTCH 1 5 HOLDING CLUTCH B3 6 HOLDING CLUTCH B2 7 DRIVING CLUTCH 8
65. valve surplus oil is diverted to the lubrication pressure regulating valve 1 from where the lubrication pressure p Sm is used in regulated amounts to supply the transmission lubrication system including the torque converter p A 80e33d95 21 600 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX Shift Pressure Regulating Valve The shift pressure is determined by the shift pressure regulating solenoid valve and the shift pressure regu lating valve 3 In addition pressure from the clutch K2 1 is also present at the annular surface 2 of the shift pressure regulating valve 3 This reduces the p Sv shift pressure in 2nd gear zu PRR 80e33db3 Regulating Valve Pressure Regulating Valve The regulating valve pressure p RV is set at the reg ulating valve pressure regulating valve 1 in relation to the working pressure p A as far as the maximum pressure Shift Valve Pressure Regulating Valve The non constant regulating valve pressure p RV is regulated to a constant shift valve pressure p SV at the shift valve pressure regulating valve 1 and is used to supply the 1 2 and 4 5 3 4 2 3 solenoid valves and the torque converter lockup clutch PWM solenoid valve SF 2 RAAN Y Y yo A CES IRIN gt 41 6
66. 0 Position the heat shield 2 onto the transmission housing and install the screw 1 and bolt 3 to hold the shield in place 11 Fill the transmission with the correct oil Refer to LUBRICATION amp MAINTENANCE FLUID TYPES DESCRIPTION using the standard procedure Refer to 21 TRANSMISSION AUTOMATIC NAG1 FLUID AND FILTER STANDARD PROCE DURE TRANSMISSION FILL 80e3b115 21 614 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX FLUID AND FILTER DESCRIPTION The oil level control is located on the electrohydraulic unit 4 and consists of the float 5 which is integrated into the electrohydraulic unit The float is positioned to plug the opening 6 between the oil gallery 2 and gearset chamber 1 so that the rotating gearsets do not splash about in oil as the oil level rises The oil level control reduces power loss and prevents oil from being thrown out of the transmission housing at high oil temperatures 80e2c4a7 OPERATION With low oil levels the lubricating oil which flows con stantly out of the gearset flows back to oil gallery 2 though the opening 6 If the oil level rises the oil presses the float 5 against the housing opening 6 The float 5 therefore separates the oil gallery 2 from the gearset chamber 1 The lubricating oil which continues to flow out of the gearsets is thrown against the housing wall incorporated
67. 0 071 IN 3 OUTER DISCS 1 8 MM 7 SNAP RING 0 071 IN 4 SPRING WASHER 8 B3 DISC CARRIER Applying excessive force to the clutch will give an incorrect reading and lead to a transmission failure Us ing a feeler gauge determine the play L at three points between the snap ring 7 and outer multiple disc 1 B3 clutch clearance should be 1 0 1 4 mm 0 039 0 055 in Adjust the clearance as necessary c Adjust with snap ring 7 if necessary Snap rings are available in thicknesses of 3 2 mm 0 126 in 3 5 mm 0 138 in 3 8 mm 0 150 in 4 1 mm 0 162 in 4 4 mm 0 173 in and 4 7 mm 0 185 in 5 Check that the K1 clutch feed hole 1 in the inner hub of clutch B1 is free before installing clutch B1 80e3f72d LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 547 80e3f6de Install Holding Clutch B1 and Oil Pump 1 BOLTS M6X32 4 BOLTS M8X35 2 CONVERTER HOUSING 5 HOLDING CLUTCH B1 3 INTERMEDIATE PLATE 6 OIL PUMP 6 Place intermediate plate 3 on converter housing 2 and align Note The intermediate plate can generally be used several times The plate must not be coated with addi tional sealant 7 Install the holding clutch B1 5 onto the converter housing and intermediate plate Installed position of clutch B1 in relation to converter housing is specified by a plain dowel pin in clutch B1 arrow 8 Install the bolts to hold clut
68. 0 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi CONTROL 105 120 psi SOLENOID VALVE 0 120 psi HYDRAULIC FLOW IN DRIVE FOURTH TO THIRD GEAR TRANSITION 810bb2e7 LX K2 1 2 4 5 COMMAND 1 2 4 5 HOLDING 15 2 4 5 OVERLAP 21 is LP SOL IN PRES LU AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION B3 3 4 COMMAND 2 3 HOLDING o 3 4 HOLDING 25 1 DAMPER 9 S SOLINP 0009 T C LIMIT L U CONT TiC OUT COOLER 21 577 27 B2 SHIFT VALVE 0000 oo s 3 4 SHIFT PRES SEX SHIFT P REG EET PUMP SENA A SUMP DRIVE D3 TO D2 TRANSITION EE 105 120 psi r 2 ERES SS LINE CONTROL SHIFT VALVE SHIFT TC IN TC OUT OVERLAP MODULATING LUBE PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE PRESSURE 5 40 psi 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi 810bb2ec HYDRAULIC FLOW IN DRIVE THIRD TO SECOND GEAR TRANSITION 21 578 1 K1 K2 2 3 COMMAND 2 3 HOLDING 2 3 SHIFT PRES 1 2 4 5 OVERLAP DAMPER 21 5 30 INP 2200 5 LP SOL IN PRES B3 2 3 OVERLAP T C OUT uu COOLER AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 3 4 COMMAND 3 4 HOLDING LX 27 B2 SHIFT VALVE 0000
69. 2 AUTOMATIC TRANSMISSION SERVICE INFORMATION LX CABLE GEARSHIFT DIAGNOSIS AND TESTING GEARSHIFT CABLE 1 The floor shifter lever and gate positions should be in alignment with all transmission PARK NEUTRAL and gear detent positions 2 Engine starts must be possible with floor shift lever in PARK or NEUTRAL gate positions only Engine starts must not be possible in any other gear position 3 With floor shift lever handle push button not depressed and lever in a PARK position Apply forward force on center of handle and remove pressure Engine starts must be pos sible b PARK position Apply rearward force on center of handle and remove pressure Engine starts must be pos sible c NEUTRAL position Normal position Engine starts must be possible d NEUTRAL position Engine running and brakes applied apply forward force on center of shift handle Trans mission shall not be able to shift from NEUTRAL to REVERSE REMOVAL 1 Shift transmission into PARK 2 Raise vehicle 3 Disengage the gearshift cable 1 eyelet at trans mission manual shift lever 3 and pull cable out of the mounting bracket 2 8131d39a LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 623 4 Lower the vehicle 5 Remove the floor console Refer to 23 BODY IN gH us TERIOR FLOOR CONSOLE REMOVAL as nec urs
70. 23 REAR PLANETARY SUN GEAR 11 REAR PLANETARY ANNULUS GEAR 24 FREEWHEELING CLUTCH F2 12 DRIVING CLUTCH 25 INPUT SHAFT 13 FRONT PLANETARY CARRIER 26 OUTPUT SHAFT A ENGINE SPEED B TRANSMISSION INPUT SPEED Speed and torque are not converted by the direct gear ratio of the 4th gear Power is transferred from the input shaft 25 to the output shaft 26 via three locked planetary gearsets Front Planetary Gear Set The planetary carrier 13 and sun gear 21 are connected via the engaged multiple disc clutch K1 7 The plan etary gearset is therefore locked and turns as a closed unit at the input speed due to the mechanical connection of the annulus gear 8 and the input shaft 25 Rear Planetary Gear Set The multiple disc clutch K2 9 is engaged and transfers the input speed of the input shaft 25 to the planetary carrier 15 via the annulus gear 10 The annulus gear 11 turns in the same way as the planetary carrier 15 due to the mechanical connection with the locked front planetary gearset The planetary gearset is therefore locked and turns as a closed unit LX AUTOMATIC TRANSMISSION SERVICE INFORMATION Center Planetary Gear Set 21 507 The annulus gear 10 turns at the input speed as a result of the engaged multiple disc clutch K2 9 The multiple disc clutch K3 12 connects the sun gears 22 and 23 of the rear and center planetary gearset The planetary gearset is locked
71. 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 Temperature F 813bfic8 Transmission Fill Graph 6 Check transmission oil temperature using the appropriate scan tool Note The true transmission oil temperature can only be read by a scan tool in REVERSE or any forward gear position Refer to 21 AUTOMATIC TRANSMISSION NAG1 TRANSMISSION TEMPERATURE SENSOR PARK NEUTRAL SWITCH OPERATION 7 The transmission Oil Dipstick 9336 has indicator marks every 10mm Determine the height of the oil level on the dipstick and using the height the transmission temperature and the Transmission Fluid Graph determine if the transmission oil level is correct 8 Add or remove oil as necessary and recheck the oil level 9 Once the oil level is correct install the dipstick tube cap TRANSMISSION FILL To avoid overfilling transmission after a fluid change or overhaul perform the following procedure 1 Verify that the vehicle is parked on a level surface 2 Remove the dipstick tube cap LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 617 3 Add following initial quantity of Mopar ATF 4 Automatic Transmission Fluid to the transmission a If only fluid and filter were changed add 7 4 L 14 8 pts of transmission fluid to transmission b If the transmission was completely overhauled or the torque converter was replaced or drained add 8 1 L 17 1 pts of transmission fluid to transmission 4 Che
72. 80 32194 1 OVERLAP REGULATING VALVE 2 ANNULAR SURFACE ON OVERLAP REGULATING VALVE Command Valve SY 80e33b67 Command Valve 1 HOLDING CLUTCH B1 3 1 2 4 5 COMMAND VALVE 2 DRIVING CLUTCH Each shift group possesses one command valve 3 The 1 2 4 5 and 2 3 command valves are installed in the shift valve housing the 3 4 command valve is installed in the valve housing The command valve switches the shift group from the stationary phase to the shift phase and back again LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 592 Holding Pressure Shift Valve Jm 2222222 V 77577 M 80 33 95 Holding Pressure Shift Valve 1 HOLDING PRESSURE SHIFT VALVE Each shift group possesses one holding pressure shift valve 1 The 1 2 4 5 and 2 3 holding pressure shift valves are installed in the shift valve housing the 3 4 holding pressure shift valve is installed in the valve housing The holding pressure shift valve allocates the working pressure to one actuator of a shift group LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 593 Shift Pressure Shift Valve 2772 L NW SSSI 80e33cde Shift Pressure Shift Valve 1 1 2 4 5 COMMAND VALVE 3 HOLDING CLUTCH 1 2 DRIVING CLUTCH 4 1 2 4 5 SH
73. ALVE 7 SHIFT PRESSURE REGULATING SOLENOID 17 1 2 4 5 COMMAND VALVE 8 SHIFT PRESSURE REGULATING VALVE 18 1 2 4 5 COMMAND VALVE 9 SHIFT VALVE B2 19 BALL VALVE 10 3 4 SHIFT SOLENOID With the engine started and the gearshift lever in the NEUTRAL or PARK positions holding clutch B1 1 and driving clutch 4 are applied and the various valves in the 1 2 4 5 shift group are positioned to apply pressure to the holding clutch B2 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 523 Activation Sequence 3 H 5 2m E 4 EXT 8 8 diem p S 80 37332 Activation Sequence 1 HOLDING CLUTCH 1 11 PRESSURE HOLDING VALVE 2 DRIVING CLUTCH K1 12 3 4 HOLDING PRESSURE SHIFT VALVE 3 HOLDING CLUTCH B3 13 3 4 COMMAND VALVE 4 DRIVING CLUTCH 14 3 4 SHIFT PRESSURE SHIFT VALVE 5 HOLDING CLUTCH B2 PISTON 15 3 4 OVERLAP REGULATING VALVE 6 HOLDING CLUTCH B2 PISTON OPPOSING FACE 16 BALL VALVE 7 SHIFT PRESSURE REGULATING SOLENOID 17 1 2 4 5 COMMAND VALVE 8 SHIFT PRESSURE REGULATING VALVE 18 1 2 4 5 COMMAND VALVE 9 SHIFT VALVE B2 19 BALL VALVE 10 3 4 SHIFT SOLENOID The selector valve opens the shift pressure p S feed connection from the ball valve 19 with the shift valve B2 9 With the shift valve B2 9 in the upper position shift pressure p S travels behind the piston B2 5 and simulta neou
74. ATIC TRANSMISSION NAG1 SERVICE INFORMATION LX K3 INPUT CLUTCH DISASSEMBLY 80 43 11 Input Clutch Components SNAP RING 6 PISTON MULTIPLE DISC PACK 7 SEALING RING DISC SPRING 8 OUTER DISC CARRIER SNAP RING 9 MULTI USE SPRING COMPRESSOR 8900 SPRING PLATE 4 5 Remove snap ring 1 from outer multiple disc carrier Remove multiple disc pack 2 and disk spring 3 from outer multiple disc carrier Note which clutch disc is removed just prior to the spring plate 3 for re assembly If the clutch discs are re used this disc must be returned to its original position on top of the spring plate Place Multi use Spring Compressor 8900 9 on disc spring 5 and compress the spring until the snap ring 4 is exposed Remove snap ring 4 Remove spring plate 5 and piston 6 from outer multiple disc carrier LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 653 ASSEMBLY 80e43e11 Input Clutch K3 Components 6 7 8 9 PISTON SEALING RING OUTER DISC CARRIER MULTI USE SPRING COMPRESSOR 8900 1 SNAP RING 2 MULTIPLE DISC PACK 3 DISC SPRING 4 SNAP RING 5 SPRING PLATE 1 Install piston 6 in the outer multiple disc carrier 8 Check sealing ring 7 replace if necessary The rounded off edges of the sealing ring must point outwards 2 Insert disc spri
75. B3 piston 8 by blowing compressed air into the bore D 7 Press piston guide ring 13 out of the B2 piston 10 8 Separate piston guide 4 from the B3 piston 8 by blowing compressed air into the bore A 80e43ced 21 636 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX ASSEMBLY 80e43ce5 Holding Clutch B2 B3 Seals 1 PISTON GUIDE RING 4 B2 PISTON SEALING RING 2 PISTON GUIDE RING SEALING RING 5 PISTON B2 OUTER DISC CARRIER 3 PISTON GUIDE RING SEALING RING 6 B8 PISTON SEALING RING 1 Check all sealing rings 2 4 6 replace if necessary The rounded off edges on the sealing rings 2 4 6 must point outwards LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 637 80e43cdd Holding Clutch B2 1 SNAP RING 9 B2 PISTON SEALING RING 2 MULTIPLE DISC PACK 10 B2 PISTON 3 DISC SPRING 11 PISTON GUIDE SEALING RING 4 B2 AND B3 PISTON GUIDE 12 PISTON GUIDE SEALING RING 5 O RING 13 PISTON GUIDE RING 6 B8 PISTON SEALING RING 14 PISTON BACK PRESSURE DISC SPRING 7 B8 PISTON SEALING RING 15 SPRING PLATE 8 B8 PISTON B2 OUTER DISC CARRIER 16 SNAP RING 2 Assemble piston guide 4 and B3 piston 8 in the correct position Verify that the missing tooth in the B3 pis ton B2 outer disc carrier 8 is aligned with the centerline of the two threaded
76. CARRIER A ENGINE SPEED TRANSMISSION INPUT SPEED C FIRST GEAR RATIO Reverse Gear Powerflow 14 CENTER PLANETARY CARRIER 15 REAR PLANETARY CARRIER 16 TORQUE CONVERTER STATOR 17 FRONT PLANETARY PINION GEARS 18 CENTER PLANETARY PINION GEARS 19 REAR PLANETARY PINION GEARS 20 FREEWHEELING CLUTCH F1 21 FRONT PLANETARY SUN GEAR 22 CENTER PLANETARY SUN GEAR 23 REAR PLANETARY SUN GEAR 24 FREEWHEELING CLUTCH F2 25 INPUT SHAFT 26 OUTPUT SHAFT D SECOND GEAR RATIO E THIRD GEAR RATIO F FIXED PARTS 21 510 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX EC 88 D 80e2acce 1 TORQUE CONVERTER LOCK UP CLUTCH 2 TORQUE CONVERTER TURBINE 3 TORQUE CONVERTER IMPELLER 4 HOLDING CLUTCH 1 5 HOLDING CLUTCH B3 6 HOLDING CLUTCH B2 7 DRIVING CLUTCH 8 FRONT PLANETARY ANNULUS GEAR 9 DRIVING CLUTCH K2 10 CENTER PLANETARY ANNULUS GEAR 11 REAR PLANETARY ANNULUS GEAR 12 DRIVING CLUTCH 13 FRONT PLANETARY CARRIER ENGINE SPEED TRANSMISSION INPUT SPEED C FIRST GEAR RATIO Reverse Gear Powerflow 14 CENTER PLANETARY CARRIER 15 REAR PLANETARY CARRIER 16 TORQUE CONVERTER STATOR 17 FRONT PLANETARY PINION GEARS 18 CENTER PLANETARY PINION GEARS 19 REAR PLANETARY PINION GEARS 20 FREEWHEELING CLUTCH F1 21 FRONT PLANETARY SUN
77. Check for latest level TCM calibration software Perform the TCM adaptation procedure Refer to 8 ELECTRICAL ELECTRONIC CONTROL MODULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE 2 Customer applying throttle while 2 Instruct customer to wait until shift is in progress shift is complete prior to applying throttle 1 Transmission adaptation 1 Check for latest level TCM calibration software Perform the TCM adaptation procedure Refer to 8 ELECTRICAL ELECTRONIC CONTROL MODULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE 2 Customer shifting into desired 2 Instruct customer to only shift range with vehicle motion into the desired range with the vehicle stopped and the service brake applied 3 Transmission in limp home mode 3 Check TCM for DTCs Repair as needed 1 Converter clutch or lock up control 1 Perform converter clutch valve malfunction diagnostics test Inspect valve body for stuck or sticky lock up control valve If valve motion is free replace lock up solenoid and retest 2 Defective torque converter 2 Replace torque converter 1 Stick slip condition between output 1 Replace output flange and flange and output shaft nut upon nut torque reversal from R to D or D to R Click on first launch 1 Transmission adaptation 1 Check for latest level TCM calibration software Perform the TCM adaptation procedure Refer to 8 ELECTRICAL ELECTRONIC CONTROL MODULES TRANS
78. Components 1 VALVE BODY 8 SHIFT VALVE PRESSURE REGULATING VALVE 2 1 2 4 5 COMMAND VALVE 9 B2 SHIFT VALVE 3 1 2 4 5 HOLDING PRESSURE SHIFT VALVE 10 2 8 HOLDING PRESSURE SHIFT VALVE 4 1 2 4 5 SHIFT PRESSURE SHIFT VALVE 11 2 8 COMMAND VALVE 5 1 2 4 5 OVERLAP REGULATING VALVE SLEEVE AND PISTON 12 2 8 SHIFT PRESSURE SHIFT VALVE 6 SHIFT PRESSURE REGULATING VALVE 13 TCC LOCK UP REGULATING VALVE 7 REGULATING VALVE PRESSURE REGULATING VALVE 14 TCC DAMPER VALVE if equipped 16 Remove the screws holding the side covers to the valve body and valve housing 17 Remove all valves and springs from the valve body 1 Check all valves for ease of movement and shavings Note The sleeves and pistons of the overlap regulating valves must not be mixed up LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 607 80e3eec2 Valve Housing Components 2 3 OVERLAP REGULATING VALVE SLEEVE AND PISTON VALVE HOUSING SELECTOR VALVE 3 4 HOLDING PRESSURE SHIFT VALVE 3 4 COMMAND VALVE AUN 6 3 4 SHIFT PRESSURE SHIFT VALVE 7 8 9 3 4 OVERLAP REGULATING VALVE SLEEVE AND PISTON OPERATING PRESSURE REGULATING VALVE LUBRICATING PRESSURE REGULATING VALVE 18 Remove all valves and springs from the valve housing 2 Check all valves for ease of movement and shavings 19 Remove the pressure supply valve 1 from the valve body
79. DRIVE FIFTH GEAR SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi 810bb210 21 574 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX B2 B1 K1 K2 B3 Jo 10 gt 1 1 1 LT DNRP 11 1 A 1 2 4 5 COMMAND 2 3 COMMAND I 14 Lr 1 214 5 HOLDING 2 3 HOLDING um 15 R fu 5 E posal 3 4 HOLDING SHIFT PRES 16 WII
80. DULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE 2 Transmission in limp home mode 2 Check TCM for DTCs Repair as needed 3 Driveline lash movement 3 Check engine mounts transmission mount driveshaft couplings rear crossmember mounts axle mounts and axle lash 4 Converter clutch or lock up control 4 Perform converter clutch valve malfunction diagnostics test Inspect valve body for stuck or sticky lock up control valve If valve motion is free replace lock up solenoid and retest 5 Valve Body Malfunction 5 Inspect valve body for stuck or sticky regulator valve 6 Clutch or planetary component 6 Remove disassemble and damage repair transmission as necessary LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 527 CONDITION POSSIBLE CAUSES CORRECTION Delayed N D or N R 1 Transmission adaptation 1 Check for latest level TCM Engagement calibration software Perform the TCM adaptation procedure Refer to 8 ELECTRICAL ELECTRONIC CONTROL MODULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE 2 Torque converter fluid drain back 2 If vehicle moves normally delayed soft engagement after 3 seconds of shifting into gear no repair is necessary If longer inspect pump for worn bushing 3 Fluid Level Low 3 Check and adjust fluid level Refer to 21 TRANSMISSION AUTOMATIC NAG1 FILTER STANDARD PROCEDURE 4 Filter plugged 4 Check TC out pres
81. ETARY ANNULUS GEAR 9 DRIVING CLUTCH K2 10 CENTER PLANETARY ANNULUS GEAR 11 REAR PLANETARY ANNULUS GEAR 12 DRIVING CLUTCH 13 FRONT PLANETARY CARRIER ENGINE SPEED TRANSMISSION INPUT SPEED C FIRST GEAR RATIO Fifth Gear Powerflow 14 CENTER PLANETARY CARRIER 15 REAR PLANETARY CARRIER 16 TORQUE CONVERTER STATOR 17 FRONT PLANETARY PINION GEARS 18 CENTER PLANETARY PINION GEARS 19 REAR PLANETARY PINION GEARS 20 FREEWHEELING CLUTCH F1 21 FRONT PLANETARY SUN GEAR 22 CENTER PLANETARY SUN GEAR 23 REAR PLANETARY SUN GEAR 24 FREEWHEELING CLUTCH F2 25 INPUT SHAFT 26 OUTPUT SHAFT D SECOND GEAR RATIO E THIRD GEAR RATIO F FIXED PARTS Torque from the torque converter is increased via the input shaft 25 and all three planetary gearsets and trans ferred to the output shaft 26 Front Planetary Gear Set The annulus gear 8 is driven by the input shaft 25 The sun gear 21 is held against the housing by the locked freewheel F1 20 during acceleration and via the engaged multiple disc holding clutch B1 4 during deceleration The planetary pinion gears 17 turn on the fixed sun gear 21 and increase the torque from the annulus gear 8 to the planetary carrier 13 The planetary carrier 13 moves at a reduced speed in the running direction of the engine Rear Planetary Gear Set The multiple disc clutch K2 9 is engaged and transfers the input speed of
82. IFT PRESSURE SHIFT VALVE Each shift group possesses one shift pressure shift valve 4 The 1 2 4 5 and 2 3 shift pressure shift valves are installed in the shift valve housing the 3 4 shift pressure shift valve is installed in the valve housing It assigns the shift pressure p S to the activating actuator and the overlap pressure p U regulated by the overlap regulating valve to the deactivating actuator Lubrication Pressure Regulating Valve The lubrication pressure regulating valve 1 is located in the valve housing of the electrohydraulic control module The valve controls the fluid to lubricate and cool the mechanical part of the transmission and lim its the pressure in the torque converter p A i VS 006060000 80e33d95 21 594 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION Shift Pressure Regulating Valve The shift pressure regulating valve 1 is located in the valve housing of the shift plate It regulates the shift pressure 5 Regulating Valve Pressure Regulating Valve The regulating valve pressure regulating valve 1 is located in the valve housing of the electrohydraulic control module It regulates the regulating valve con trol valve pressure p RV Shift Valve Pressure Regulating Valve The shift valve pressure regulating valve 1 is located in the valve housing of the electrohydraulic control module It regulates the shift valve pressure p SV LX
83. ION 21 511 Planetary Gear Set The annulus gear 10 is held against the housing by the multiple disc holding clutch B3 5 via the mechanical connection to the planetary carrier 15 The sun gear 22 turns backwards due to the engaged multiple disc clutch K3 12 The planetary gears 18 turn on the fixed annulus gear 10 and increase the torque from the sun gear 22 to the planetary carrier 14 The output shaft 26 connected to the planetary carrier 14 turns at a reduced speed in the opposite direction to the running direction of the engine REVERSE GEAR POWERFLOW LIMP IN N di N N PEE N N N N gc 8558 D RAW 80e2b9d4 Reverse Gear Powerflow Limp In 1 TORQUE CONVERTER LOCK UP CLUTCH 14 CENTER PLANETARY CARRIER 2 TORQUE CONVERTER TURBINE 15 REAR PLANETARY CARRIER 3 TORQUE CONVERTER IMPELLER 16 TORQUE CONVERTER STATOR 4 HOLDING CLUTCH 1 17 FRONT PLANETARY PINION GEARS 5 HOLDING CLUTCH B3 18 CENTER PLANETARY PINION GEARS 6 HOLDING CLUTCH B2 19 REAR PLANETARY PINION GEARS 7 DRIVING CLUTCH 20 FREEWHEELING CLUTCH F1 8 FRONT PLANETARY ANNULUS GEAR 21 FRONT PLANETARY SUN GEAR 9 DRIVING CLUTCH K2 22 CENTER PLANETARY SUN GEAR 10 CENTER PLANETARY ANNULUS GEAR 23 REAR PLANETARY SUN GEAR 11 REAR PLANETARY ANNULUS GEAR 24
84. LX AUTOMATIC TRANSMISSION SERVICE INFORMATION AUTOMATIC TRANSMISSION SERVICE INFORMATION TABLE OF CONTENTS page AUTOMATIC TRANSMISSION 1 SERVICE INFORMATION DESCRIPTION 496 OPERATION 498 DIAGNOSIS AND TESTING AUTOMATIC TRANSMISSION 525 PRELIMINARY 525 ROAD TESTING 525 AUTOMATIC TRANSMISSION 526 STANDARD PROCEDURE ALUMINUM THREAD REPAIR 534 REMOVAL 534 DISASSEMBLY 538 ASSEMBLY 2 e dee tae 544 INSTALLATION oo ee 553 SCHEMATICS AND DIAGRAMS 558 SPECIFICATIONS 6 RR Ame 579 SPECIAL TOOLS AUTOMATIC TRANSMISSION NAGI 581 MECHANISM BRAKE TRANSMISSION SHIFT INTERLOCK DESCRIPTION 583 OPERATION iue de M mew 583 DIAGNOSIS AND TESTING BRAKE TRANSMISSION SHIFT INTERLOCK 584 ADJUSTMENTS BRAKE TRANSMISSION SHIFT INTERLOCK 585 UNIT ELECTROHYDRAULIC CONTROL DESCRIPTION ecg 587 OPERATION 595 REMOVAL 601 DISASSEMBLY 603 ASSEMBLY oe pan ee RES 608 INSTALLATION 612 FLUID AND FILTER DESCRIPTION 22 2 55 254222 2 614 OPERATION 614
85. Ls LIN VEN I 9 49 9 9 2 WMO 80 2 919 B1 CLUTCH EXTERNALLY TOOTHED DISC INTERNALLY TOOTHED DISC B3 CLUTCH B2 CLUTCH B3 CLUTCH PISTON B2 CLUTCH PISTON B2 CLUTCH INTERNALLY TOOTHED DISC CARRIER REAR PLANETARY GEARSET PLANETARY CARRIER 10 CENTER PLANETARY GEARSET PINION GEARS 12 13 14 15 16 17 11 Holding Clutches CENTER PLANETARY GEARSET ANNULUS GEAR CENTER PLANETARY GEARSET SUN GEAR FRONT PLANETARY GEARSET PINION GEARS FRONT PLANETARY GEARSET SUN GEAR B1 CLUTCH INTERNALLY TOOTHED DISC CARRIER B1 CLUTCH PISTON B1 CLUTCH EXTERNALLY TOOTHED DISC CARRIER Three multiple disc holding clutches the front B1 1 middle B3 4 and rear multiple disc clutches B2 5 are located in the planetary gear sets in the transmission housing A multiple disc holding clutch consists of a number of internally toothed discs 10 on an internally toothed disc carrier and externally toothed discs 9 on an externally toothed disc carrier which is rigidly connected to the trans mission housing 21 628 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION OPERATION
86. MISSION CONTROL MODULE STANDARD PROCEDURE 2 Valve body malfunction 2 Inspect valve body for sticky stuck valves Repair as needed If valve motion is free replace shift pressure solenoid and line pressure solenoid and retest 3 Damaged or misbuilt clutch 3 Remove disassemble and repair transmission as needed LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 529 CONDITION POSSIBLE CAUSES CORRECTION EMCC Shudder 1 Transmission adaptation 1 Check for latest level TCM calibration software Perform the TCM adaptation procedure Refer to 8 ELECTRICAL ELECTRONIC CONTROL MODULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE 2 Fluid condition contamination or 2 Change fluid per service wrong type manual procedures Refer to 21 TRANSMISSION AUTOMATIC NAG1 FILTER STANDARD PROCEDURE 3 Valve body malfunction 3 Remove valve body Inspect for sticky stuck lock up control valve If valve motion is free replace the lock up solenoid and retest 4 Defective torque converter 4 Replace torque converter Grating or Scraping Noise 1 Torque converter bolts contacting 1 Dust shield bent Replace if proportional to engine dust shield needed Torque converter bolt speed backed out Replace with new bolt and torque to proper level 2 Damaged broken drive plate 2 Inspect driveplate Replace if needed Grating or Scraping Noise 1 Driveshaft or rear axle noise 1 Check drivesha
87. NES 4 DIRECTION STATOR IS LOCKED UP DUE TO OIL PUSHING AGAINST STATOR VANES 80e2e14b TURBINE IMPELLER STATOR INPUT SHAFT STATOR SHAFT PISTON COVER SHELL INTERNALLY TOOTHED DISC CARRIER CLUTCH PLATE SET 10 EXTERNALLY TOOTHED DISC CARRIER 11 TURBINE DAMPER 21 692 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX NO EMCC Under No EMCC conditions the TCC Solenoid is OFF There are several conditions that can result in NO EMCC operations No EMCC can be initiated due to a fault in the transmission or because the TCM does not see the need for EMCC under current driving conditions PARTIAL EMCC Partial EMCC operation modulates the TCC Solenoid duty cycle to obtain partial torque converter clutch applica tion Partial EMCC operation is maintained until Full EMCC is called for and actuated During Partial EMCC some slip does occur Partial EMCC will usually occur at low speeds low load and light throttle situations FULL EMCC During Full EMCC operation the TCM increases the TCC Solenoid duty cycle to full ON after Partial EMCC control brings the engine speed within the desired slip range of transmission input speed relative to engine rpm GRADUAL TO NO EMCC This operation is to soften the change from Full or Partial EMCC to No EMCC This is done at mid throttle by decreasing the TCC Solenoid duty cycle
88. NG CLUTCH F1 21 FRONT PLANETARY SUN GEAR 22 CENTER PLANETARY SUN GEAR 23 REAR PLANETARY SUN GEAR 24 FREEWHEELING CLUTCH F2 25 INPUT SHAFT 26 OUTPUT SHAFT C FIRST GEAR RATIO D FIXED PARTS 21 504 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 80e2aca4 Third Gear Powerflow 1 TORQUE CONVERTER LOCK UP CLUTCH 14 CENTER PLANETARY CARRIER 2 TORQUE CONVERTER TURBINE 15 REAR PLANETARY CARRIER 3 TORQUE CONVERTER IMPELLER 16 TORQUE CONVERTER STATOR 4 HOLDING CLUTCH 1 17 FRONT PLANETARY PINION GEARS 5 HOLDING CLUTCH B3 18 CENTER PLANETARY PINION GEARS 6 HOLDING CLUTCH B2 19 REAR PLANETARY PINION GEARS 7 DRIVING CLUTCH 20 FREEWHEELING CLUTCH F1 8 FRONT PLANETARY ANNULUS GEAR 21 FRONT PLANETARY SUN GEAR 9 DRIVING CLUTCH K2 22 CENTER PLANETARY SUN GEAR 10 CENTER PLANETARY ANNULUS GEAR 23 REAR PLANETARY SUN GEAR 11 REAR PLANETARY ANNULUS GEAR 24 FREEWHEELING CLUTCH F2 12 DRIVING CLUTCH 25 INPUT SHAFT 13 FRONT PLANETARY CARRIER 26 OUTPUT SHAFT A ENGINE SPEED C FIRST GEAR RATIO TRANSMISSION INPUT SPEED D FIXED PARTS Torque from the torque converter is increased via the input shaft 25 and the center planetary gearset and trans ferred to the output shaft 26 Front Planetary Gear Set The planetary carrier 13 and sun gear 21 are connected via
89. ON LX STANDARD PROCEDURE ALUMINUM THREAD REPAIR Damaged or worn threads in the aluminum transmission case and valve body can be repaired by the use of Heli Coils or equivalent This repair consists of drilling out the worn out damaged threads Then tap the hole with a special Heli Coil tap or equivalent and installing a Heli Coil insert or equivalent into the hole This brings the hole back to its original thread size Heli Coil or equivalent tools and inserts are readily available from most automotive parts suppliers REMOVAL Note If the transmission is being reconditioned clutch seal replacement or replaced it is necessary to perform the TCM Adaptation Procedure using the scan tool Refer to 8 ELECTRICAL ELECTRONIC CON TROL MODULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE 1 Disconnect the negative battery cable 2 Raise and support the vehicle 3 Mark propeller shaft 1 and the transmission flange 4 for assembly alignment 4 Remove the bolts 2 holding the rear propeller shaft coupler 3 to the transmission flange 4 5 Slide the propeller shaft 1 rearward until the cou pler clears the propeller shaft pilot 5 on the trans mission output shaft 8131d39b 6 Remove the bolts 2 holding the starter motor 1 to the transmission Refer to 8 ELECTRICAL STARTING STARTER MOTOR REMOVAL 7 Remove the starter 1 from
90. OTHED DISC 14 K2 CLUTCH PISTON 4 INTERNALLY TOOTHED DISC 15 FRONT PLANETARY GEARSET PLANETARY CARRIER 5 CLUTCH 16 FRONT PLANETARY GEARSET ANNULUS GEAR 6 CLUTCH EXTERNALLY TOOTHED DISC CARRIER 17 FRONT PLANETARY GEARSET SUN GEAR 7 CLUTCH PISTON 18 K1 CLUTCH INTERNALLY TOOTHED DISC CARRIER 8 CLUTCH INTERNALLY TOOTHED DISC CARRIER 19 K1 CLUTCH EXTERNALLY TOOTHED DISC CARRIER 9 REAR PLANETARY GEARSET SUN GEAR 20 K1 CLUTCH PISTON 10 CENTER PLANETARY GEARSET PLANETARY CARRIER 21 DRIVE SHAFT 11 CENTER PLANETARY GEARSET ANNULUS GEAR The input clutches produce a non positive locking connection between two elements of a planetary gear set or between one element from each of two planetary gear sets in order to transmit the drive torque If the piston 20 on multi plate clutch K1 1 is subjected to oil pressure it presses the internal and external discs of the disc set together The sun gear 17 is locked with the planetary carrier 15 via the externally toothed disc carrier 19 and the internally toothed disc carrier 18 The front planetary gear set is thus locked and turns as a closed unit If the multi plate clutch K2 2 is actuated via the piston 14 the piston compresses the disc set The annulus gear 16 of the front planetary gear set is locked with the annulus gear 11 of the center planetary gear set via the externally toothed disc carrier 13 and the center planetary carrier 10 o
91. Ploood LIMIT T C OUT COOLER 21 567 B2 27 2 SHIFT VALVE SHIFT P REG 105 120 psi PERRERA ES LINE CONTROL SHIFT VALVE SHIFT TC IN OUT MODULATING LUBE PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE 5 40 psi 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi HYDRAULIC FLOW IN DRIVE SECOND GEAR SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi 810bafb9 21 568 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX B1 K1 K2 B3 A 27 1 2 4 5 COMMAND d 2 3 _ 3 4 COMMAND o 82 SHIFT VALVE 1 2 4 HOLDING 5 2 3 HOLDING 3 4 HOLDING 2 3 SHIFT PRES 2 3 OVERLAP 1 2 4 5 OVERLAP 8 SHIFT P REG Em DAMPER LP SOL IN PRES 21 15 IN Po ooo S 9 eo T C LIMIT PUMP NNA gt DRIVE l 1 38 02 D3 TOUT TRANSITION LINE CONTROL SHIFT VALVE SHIFT TC IN TC OUT OVERLAP MODULATING LUBE SHIFT PRESSURE VALVE PRESSURE PRESSURE 50 100 psi 10 45 psi PRESSURE PRESSURE 5 40 psi PRESSURE 50 350 psi PRESSURE 50 55 psi 0 220 psi 0 120 psi CONTROL 105 120 psi SOLENOID VALVE 0 120 psi 810baff2 HYDRAULIC FLOW IN DRIVE SECOND TO THIRD GEAR TRANSITION LX AUTOMATIC T
92. R SEAL RING O RING 16 MULTIPLE DISC PACK 7 PISTON INNER SEAL RING 17 SNAP RING 8 THRUST WASHER 18 HOLLOW GEAR 9 PISTON 19 SNAP RING 10 DISC SPRING 1 Install piston 9 in outer multiple disc carrier Inspect seals 6 and 7 replace if necessary The rounded edges of the inner piston seal 7 must point to the outside 2 Insert disk spring 10 and spring retainer 12 Insert disk spring 10 with curved side pointing toward spring retainer 12 Inspect seal 11 replace if necessary 21 650 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 3 Place Multi use Spring Compressor 8900 1 on spring plate and press until the groove 2 of the snap ring is exposed 4 Insert snap ring 80e43e05 5 Insert disk spring 14 Note Pay attention to the sequence of discs If the original clutch discs are reused be sure to return the disc identified on disassembly as belonging on top of the disc spring 14 to its original location Insert multiple disk set 16 into outer multiple disk carrier Fit snap ring 17 8 Measure K2 clutch clearance by mounting Pressing Tool 8901 1 on outer multiple disc 9 Using a lever press compress pressing tool as far as the stop then the marking ring is still visible see small arrow 4 J 80e43e0d
93. RANSMISSION NAG1 SERVICE INFORMATION 21 569 1 K1 B3 K3 B2 9 3 lt A 2 i 1 l 1 10 6 27 on mo iru 1 8 2 3 COMMAND 3 3 4 COMMAND 9 SHIFT VALVE 3 N 66 EH 2 3 HOLDING LT 4 HOLDING 5 1 4 18 1 PRES 2 3 Es 18 LT nit 2 3 OVERLAP 1 214 5 OVERLAP
94. RESSURE 0 220 psi SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi FT VALVI PRESSURE 50 55 psi MOD PRES LINE PRESSURE WORKING PRES CONTROL VALVE PRESSURE 81384380 Shift Phase 2 1 Shift Phase 1 1 1 2 4 5 SHIFT SOLENOID 5 1 2 4 5 COMMAND VALVE 2 1 2 4 5 OVERLAP VALVE 6 DRIVING CLUTCH 1 3 1 2 4 5 SHIFT PRESSURE SHIFT VALVE 7 HOLDING CLUTCH B1 4 1 2 4 5 HOLDING PRESSURE SHIFT VALVE LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 519 The 1 2 4 5 shift solenoid 1 is turned ON to apply shift pressure p S to the end face of the 1 2 4 5 command valve 5 This allows the command valve to up shift and the shift pressure coming from the 1 2 4 5 shift valve 3 is routed to the holding clutch B1 7 via the command valve Simultaneously the pressure in the releasing clutch K1 6 is regulated at the 1 2 4 5 overlap valve 2 The pres sure in the K1 clutch as it disengages is controlled during the shift phase depending on engine load via the mod ulating pressure p MOD and the shift pressure in clutch B1 7 The increasing shift pressure in clutch B1 which also acts on the end face of the overlap valve reduces the overlap pressure 21 520 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX Shift Phase 2 1 Shift Phase 2 9 D K1 PRES TO REG VAL CONTROL VALVE PRESSURE 105 120 psi LINE PRESSURE
95. RSE FAILSAFE LINE CONTROL PRESSURE VALVE 50 350 psi PRESSURE 105 120 psi SHIFT VALVE SHIFT TC IN TC OUT PRESSURE PRESSURE 50 100 psi 10 45 psi 50 55 psi 0 220 psi sese AA LUBE 5 40 psi HYDRAULIC FLOW IN REVERSE FAILSAFE 810bae77 21 560 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION B1 K2 B3 K3 B2 v z 2 2 4 5 COMMAND je 1 2 4 5 HOLDING 15 1 214 5 SHIFT PRES 11 2 3 HOL DING 3 4 COMMAND 10 6 26 3 4 HOLDING 4
96. SC CARRIER 7 CLUTCH PISTON 8 CLUTCH INTERNALLY TOOTHED DISC CARRIER 9 REAR PLANETARY GEARSET SUN GEAR 10 CENTER PLANETARY GEARSET PLANETARY CARRIER 11 CENTER PLANETARY GEARSET ANNULUS GEAR 14 K2 CLUTCH PISTON 15 FRONT PLANETARY GEARSET PLANETARY CARRIER 16 FRONT PLANETARY GEARSET ANNULUS GEAR 17 FRONT PLANETARY GEARSET SUN GEAR 18 K1 CLUTCH INTERNALLY TOOTHED DISC CARRIER 19 K1 CLUTCH EXTERNALLY TOOTHED DISC CARRIER 20 K1 CLUTCH PISTON 21 DRIVE SHAFT Three multi plate input clutches 1 2 5 the front middle and rear multi plate clutches K1 1 K2 2 and 5 are located in the planetary gear sets in the transmission housing A multi plate input clutch consists of a number of internally toothed discs 4 on an internally toothed disc carrier and externally toothed discs 3 on an externally toothed disc carrier LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 641 OPERATION alm ENT i EN UM _ 20 19 18 16 15 4 er 13 12 11 10 9 8 7 6 8062163 Input Clutches 1 K1 CLUTCH 12 CENTER PLANETARY GEARSET SUN GEAR 2 K2 CLUTCH 13 K2 CLUTCH EXTERNALLY TOOTHED DISC CARRIER 3 EXTERNALLY TO
97. STRUCTION 80bfe26b Turbine 1 TURBINE VANE 4 PORTION OF TORQUE CONVERTER COVER 2 ENGINE ROTATION 5 ENGINE ROTATION 3 INPUT SHAFT 6 OIL FLOW WITHIN TURBINE SECTION The turbine 1 is the output or driven member of the converter The turbine is mounted within the housing opposite the impeller but is not attached to the housing The input shaft is inserted through the center of the impeller and splined into the turbine The design of the turbine is similar to the impeller except the blades of the turbine are curved in the opposite direction 21 688 STATOR The stator assembly 1 4 is mounted on a stationary shaft which is an integral part of the oil pump The stator 1 is located between the impeller 2 and turbine 4 within the torque converter case The stator contains a freewheeling clutch which allows the stator to rotate only in a clockwise direction When the stator is locked against the freewheeling clutch the torque multiplication feature of the torque converter is operational AUTOMATIC TRANSMISSION SERVICE INFORMATION _ LX SIDE OF STATOR SHOWING VANE CURVATURE VIEW FROM ENGINE SIDE 50610266 80 26 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION TORQUE CONVERTER CLUTCH TCC The TCC 9 was installed to improve the efficiency of the torque converter that is lost to the slippage of the fluid
98. TION LX 4 Remove the floor console as necessary for access to the park lock cable Refer to 23 BODY INTE RIOR FLOOR CONSOLE REMOVAL 5 If necessary remove the bolts holding the shield covering the gearshift and park lock cables to the floorpan and remove the shield 6 Disconnect the park lock cable from the shift mech anism Release retention tab using suitable screwdriver 813787 8 INSTALLATION 1 Verify that ignition key is in ACC 2 position 8111e2ba LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 667 2 Install the park lock cable 4 to the ignition cylinder 3 Secure the cable to instrument panel at retainer 3 Install any instrument panel trim that was removed to access the park lock cable 8111cd38 4 Route park lock cable towards shift mechanism 5 Connect the park lock cable core to shift mecha nism cam 3 and then secure cable housing to shift mechanism 813787 8 6 Adjust the park lock cable Refer to 21 TRANSMISSION AUTOMATIC TRANSMISSION SHIFT INTERLOCK MECHANISM ADJUSTMENTS 7 If necessary install the shield covering the gearshift and park lock cables to the floorpan and install the bolts to hold the shield to the floorpan 8 Install the floor console assembly Refer to 23 BODY INTERIOR FLOOR CONSOLE INSTALLATION 21 668 AUTOMATIC
99. TIPLE DISC PACK 7 PISTON INNER SEAL RING 17 SNAP RING 8 THRUST WASHER 18 HOLLOW GEAR 9 PISTON 19 SNAP RING 10 DISC SPRING 1 Remove snap ring 19 from the K1 inner multiple disc carrier with integrated front gear set 2 and take off hol low gear 18 2 Remove input shaft with clutch K2 5 3 Remove needle thrust bearing 3 4 Remove snap ring 17 from K2 outer multiple disc carrier 5 Take out multiple disc pack 16 Note which clutch disc is removed just prior to the disc spring 14 for re as sembly If the clutch discs are re used this disc must be returned to its original position on top of the disc spring 6 Take out disc spring 14 21 648 AUTOMATIC TRANSMISSION SERVICE INFORMATION 7 Remove snap ring 2 Take out disc spring 10 and pull piston 9 out of LX Fit Multi use Spring Compressor 8900 1 onto spring retainer 12 and press until snap ring 2 is released outer multiple disc carrier 80e43e05 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 649 ASSEMBLY 80 43 01 Input Clutch K2 Components 1 NEEDLE ROLLER BEARING 11 SPRING RETAINER SEALING O RING eer INNER DISC CARRIER WITH INTEGRATED FRONT GEAR 12 SPRING RETAINER 3 THRUST BEARING 13 SNAP RING 4 TORLON SEAL RINGS 14 DISC SPRING 5 INPUT SHAFT AND K2 CLUTCH 15 EXTERNALLY TOOTHED PLATE 1 8 MM 0 071 IN 6 PISTON OUTE
100. TOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 589 Regulating Valve Control Valve Pressure p RV The regulating valve pressure is regulated at the regulating valve pressure regulating valve in relation to the working pressure p A up to a maximum pressure of 8 bar 116 psi It supplies the modulating pressure regulating solenoid valve the shift pressure regulating solenoid valve and the shift valve pressure regulating valve Shift Valve Pressure p SV The shift valve pressure p SV is derived from the regulating valve pressure p RV is regulated at the shift valve pressure regulating valve and is then present at the e 1 2 and 4 5 shift solenoid valve e 3 4 shift solenoid valve e 2 3 shift solenoid valve e Torque converter lockup solenoid valve e 3 4 and 2 3 shift pressure shift valve The shift valve pressure p SV controls the command valves via the upshift downshift solenoid valves Overlap Pressure p U The overlap pressure controls the shift component pressure reduction during a shift phase The pressure in a shift element as it disengages is controlled during the shift phase depending on engine load modulating pressure and the pressure in the shift element as it engages The adjusted pressure is inversely proportional to the transmission capability of the shift element being engaged controlled overlap Working Pressure Regulating Valve Operating Pressure The working pressure regulating valve 4 is lo
101. Tool Staking 9078 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 583 MECHANISM BRAKE TRANSMISSION SHIFT INTERLOCK DESCRIPTION The Brake Transmission Shifter Ignition Interlock BTSI is a cable operated system that prevents the transmission gear shifter from being moved out of PARK without the proper driver inputs The system also contains a solenoid that is integral to the shifter assembly The solenoid works in conjunction with the park lock cable to permit shifter movement out of PARK when the brake is depressed and prevents shifter movement into REVERSE unless a shift into REVERSE is permitted A BTSI override 2 is provided on the side of the shifter mechanism 1 to allow the vehicle to be shifted out of PARK in the event of an electrical failure 12 SN 813a3972 OPERATION The Brake Transmission Shifter Ignition Interlock BTSI is engaged whenever the ignition switch is in the LOCK 1 position An additional electrically acti vated feature will prevent shifting out of the PARK position unless the brake pedal is depressed at least one half inch A solenoid in the shifter assembly is energized when the ignition is in the ON position and the brake pedal is depressed When the key is the ON position and the brake pedal is depressed the shifter is unlocked and will move into any position The interlock system also prevents the ign
102. URE 0 220 psi SHIFT PRESSURE CONTROL SOLENOID VALVE 0 120 psi SHIFT VALVE PRESSURE 50 55 psi MOD PRES LINE PRESSURE WORKING PRES CONTROL VALVE PRESSURE 8138423e Shift Phase 1 2 Shift Phase 1 1 1 2 4 5 SHIFT SOLENOID 5 1 2 4 5 COMMAND VALVE 2 1 2 4 5 OVERLAP VALVE 6 DRIVING CLUTCH 1 3 1 2 4 5 SHIFT PRESSURE SHIFT VALVE 7 HOLDING CLUTCH B1 4 1 2 4 5 HOLDING PRESSURE SHIFT VALVE LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 515 When the 1 2 and 4 5 shift solenoid valve 1 is turned on the shift valve pressure p SV is directed onto the end face of the command valve 5 The command valve is moved and the shift pressure p S coming from the shift pressure shift valve 3 is directed via the command valve 5 onto clutch K1 6 Simultaneously the clutch B1 7 is subjected to overlap pressure by the overlap regulating valve 2 The pressure in the clutch B1 7 as it disengages is controlled during the shift phase depending on engine load by the modu lating pressure and the applying clutch pressure the shift pressure in clutch K1 The controlled pressure in clutch B1 7 is inversely proportional to the capacity of the clutch being engaged The rising shift pressure p S at clutch K1 6 acts on the annular face of the overlap regulating valve 2 and reduces the overlap pressure regulated by the overlap regulating valve 2 When a corresponding pressure level
103. ached in the individual gears at full throttle and kickdown The shift range can be changed in the forward gears while driving but the TCM employs a downshift safeguard to prevent over revving the engine The system offers the additional advantage of flexible adaptation to different vehicle and engine variants EMERGENCY RUNNING FUNCTION In order to ensure a safe driving state and to prevent damage to the automatic transmission the TCM control mod ule switches to limp home mode in the event of critical faults A diagnostic trouble code DTC assigned to the fault is stored in memory All solenoid and regulating valves are thus de energized The net effect is e The last engaged gear remains engaged e The modulating pressure and shift pressures rise to the maximum levels e The torque converter lockup clutch is deactivated In order to preserve the operability of the vehicle to some extent the hydraulic control can be used to engage 2nd gear or reverse using the following procedure e Stop the vehicle e Switch off engine e Move selector lever to P e Wait at least 10 seconds e Start engine e Move selector lever to D 2nd gear e Move selector lever to R Reverse gear The limp home function remains active until the DTC is rectified or the stored DTC is erased with the appropriate scan tool Sporadic faults can be reset via ignition OFF ON CLUTCH APPLICATION Refer to CLUTCH APPLICATION for which shift elements are applied i
104. arts in any position other than PARK or NEUTRAL or if the engine will not start at all the park neutral position contact may be faulty 9 10 11 12 Shift transmission into PARK Remove floor console as necessary for access to the shift cable adjustment Refer to 23 BODY IN TERIOR FLOOR CONSOLE REMOVAL Loosen the shift cable adjustment screw 5 Raise vehicle Unsnap cable eyelet from transmission shift lever Verify transmission shift lever is in PARK detent by moving lever fully rearward Last rearward detent is PARK position when park lock is engaged Snap cable eyelet onto transmission shift lever Lower vehicle Tighten the shift cable adjustment screw 5 to 7 65 in lbs Verify correct operation Install any floor console components removed for access Refer to 23 BODY INTERIOR FLOOR CONSOLE INSTALLATION 8134800b Verify positive engagement of transmission park lock by attempting to rotate propeller shaft Shaft will not rotate 8134800b LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 627 CLUTCHES HOLDING DESCRIPTION CM
105. ation to the engine load p S modulating pressure p Mod and the pressure in the activating actuator The regulated pressure is inversely proportional to the transfer capacity of the activating shift actuator regulated overlap hile N 80 32194 1 OVERLAP REGULATING VALVE 2 ANNULAR SURFACE ON OVERLAP REGULATING VALVE Command Valve Pe LLL KLI LI L I KLI ELS Ko 57527 PN N li ASA PCR TS SESS 9 lt lt 22 aM A AN 9 80e33b67 Command Valve 1 HOLDING CLUTCH B1 3 1 2 4 5 COMMAND VALVE 2 DRIVING CLUTCH When the end face is unpressurized stationary phase the working pressure p A is directed to the actuated shift element If the end face of the command valve is subjected to the shift valve pressure p SV shift phase then the shift pressure p S is switched to the activating element and the overlap pressure p U is switched to the deacti vating element LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 598 Shift Valve Holding Pressure gt n d ONT 80 33 95 Shift Valve Holding Pressure 1 HOLDING PRESSURE SHIFT VALVE The holding pressure shift valve 1
106. by the rotating parts and flows back into the oil gallery 2 through the upper opening arrow 80e2c4a7 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 615 DIAGNOSIS AND TESTING EFFECTS OF INCORRECT FLUID LEVEL A low fluid level allows the pump to take in air along with the fluid Air in the fluid will cause fluid pressures to be low and develop slower than normal If the transmission is overfilled the gears churn the fluid into foam This aer ates the fluid and causing the same conditions occurring with a low level In either case air bubbles cause fluid overheating oxidation and varnish buildup which interferes with valve and clutch operation Foaming also causes fluid expansion which can result in fluid overflow from the transmission vent or fill tube Fluid overflow can easily be mistaken for a leak if inspection is not careful CAUSES OF BURNT FLUID Burnt discolored fluid is a result of overheating which has three primary causes 1 Internal clutch slippage usually caused by low line pressure inadequate clutch apply pressure or clutch seal failure 2 A result of restricted fluid flow through the main and or auxiliary cooler This condition is usually the result of a faulty or improperly installed drainback valve a damaged oil cooler or severe restrictions in the coolers and lines caused by debris or kinked lines 3 Heavy duty operation with a vehicle not properly equipped for this type of ope
107. c carrier 15 The correct clutch clearance for transmissions TI with single sided friction discs is 2 3 2 7 mm 0 091 0 106 in for six friction disc versions 2 4 2 8 mm 0 095 0 110 in for eight disc versions 6 7 and 2 5 2 9 0 099 0 114 in for ten disc ver sions 16 Adjust with snap ring 7 if necessary Snap rings are available in thicknesses of 2 0 mm 0 079 in 2 3 mm 0 091 in 2 6 mm 0 102 in 2 9 mm 0 114 in 3 2 mm 0 126 in and 3 5 mm 0 138 in 81319a39 SENSORS INPUT SPEED DESCRIPTION The input speed sensors 6 8 are fixed to the shell of the control unit via contact blades The speed sensors are pressed against the transmission housing 2 by a spring 7 which is held against the valve housing of the shift plate 5 This ensures a defined distance between the speed sensors and the exciter ring 4 80 3871 21 656 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION OPERATION Signals from the input speed sensors 6 8 are recorded in the transmission control module TCM together with the wheel and engine speeds and other information and are processed into an input signal for electronic control Input speed sensor N2 6 records the speed of the front sun gear via the externally toothed disc carrier of the multiple disc clutch 1 10 and input speed sen sor N3 8 records the speed of the front planet carrier via t
108. cated in the valve housing of the shift plate It regulates the pri mary pressure of the hydraulic system RETURN TO 80 32 19 PRESSURE FROM 1 2 END FACE TO TORQUE CONVERTER REGULATING VALVE WORKING PRESSURE REGULATING VALVE 21 590 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX Torque Converter Lockup Clutch Regulating Valve 80e32f35 1 TORQUE CONVERTER LOCK UP CLUTCH 6 TORQUE CONVERTER LOCK UP CLUTCH REGULATING 2 TORQUE CONVERTER OUTPUT VALVE 3 TORQUE CONVERTER INPUT 7 OIL COOLER 4 LUBRICATION 8 LINE PRESSURE REGULATING VALVE 5 TORQUE CONVERTER LOCK UP SOLENOID 9 OIL PUMP The torque converter lock up clutch regulating valve 6 is located in the valve housing of the electrohydraulic con trol module The valve is responsible for the hydraulic control of the torque converter lockup clutch and distribution of the lubricating oil LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 591 Overlap Regulating Valve Each shift group is assigned one overlap regulating valve 1 The 1 2 4 5 overlap regulating valve is p S installed in the shift valve housing the 2 3 and 3 4 overlap regulating valves are installed in the valve housing The overlap regulating valve regulates the pressure reduction during a shift phase lt
109. ch B1 5 to the converter housing 9 Securely tighten multiple disc holding clutch B1 5 on converter housing 2 to 10 N m 88 5 in lbs 21 548 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION _ LX 10 Install new torque converter hub seal 1 into the oil pump using Seal Installer 8902A 11 Install new oil pump outer o ring seal onto oil pump 12 Install oil pump 6 and securely tighten Tighten the oil pump bolts to 20 N m 177 in lbs 80 400 1 80e3f6da Install K1 K2 and K3 Clutches 1 DRIVING CLUTCH K1 5 THRUST WASHER 2 SUN GEAR OF FRONT PLANETARY GEAR SET 6 FRONT PLANETARY GEAR SET DRIVING CLUTCH K2 AND INPUT SHAFT 3 DRIVING CLUTCH K3 OUTPUT SHAFT AND CENTER AND 7 SEALING RINGS REAR PLANETARY GEAR SETS 4 THRUST NEEDLE BEARING 13 Using grease insert sealing rings 7 in the groove so that the joint remains together 14 Install the K1 1 clutch onto the B1 clutch 15 Install input shaft with clutch K2 6 and front gear set 1 16 Install front washer 5 and thrust needle bearing 4 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 549 17 Install output shaft with center and rear gear set and clutch K3 3 18 Using grease install both Teflon rings in the groove at the rear of the output shaft so that the joint stays together 19 Mount transmission housing on converter housin
110. ck the transmission fluid Refer to 21 TRANSMISSION AUTOMATIC NAG1 FLUID AND FLUID STAN DARD PROCEDURE CHECK OIL LEVEL and adjust as required FLUID FILTER SERVICE 1 Run the engine until the transmission oil reaches operating temperature 2 Raise and support vehicle 3 Remove the bolts 5 and retainers 4 holding the oil pan to the transmission 4 Remove the transmission oil pan 3 and gasket 2 from the transmission 5 Remove the transmission oil filter 1 and o ring from the electrohydraulic control unit 6 Clean the inside of the oil pan 3 of any debris Inspect the oil pan gasket 2 and replace if neces sary 7 Install a new oil filter 1 and o ring into the elec Omid trohydraulic control unit 81300034 8 Install the oil pan 3 and gasket 2 onto the trans mission Fluid Filter Service Points 9 Install the oil pan bolts 5 and retainers 4 Torque 1 OIL FILTER the bolts to 8 N m 70 in lbs 2 OIL PAN GASKET 10 Lower the vehicle and add 7 0 L 7 4 qts of transmission fluid to the transmission 5 BOLT 11 Check the oil level Refer to 21 TRANSMIS SION AUTOMATIC NAG1 FLUID AND FILTER STANDARD PROCEDURE CHECK OIL LEVEL 21 618 AUTOMATIC TRANSMISSION SERVICE INFORMATION CLUTCH FREEWHEELING DESCRIPTION Freewheeling clutches are installed in the front plane tary gear set between the sun gear and the stator shaft and in the rear plan
111. coupling Although the fluid coupling provides smooth shock free power transfer it is natural for all fluid couplings to slip If the impeller and turbine were mechanically locked together a zero slippage condi tion could be obtained A hydraulic piston with friction material was added to the turbine assembly to provide this mechanical lock up In order to reduce heat build up in the transmission and buffer the powertrain against torsional vibrations the TCM can duty cycle the torque converter lock up solenoid to achieve a smooth application of the torque converter clutch This function referred to as Electron ically Modulated Converter Clutch EMCC can occur at various times depending on the following variables e Shift lever position e Current gear range e Transmission fluid temperature e Engine coolant temperature e Input speed e Throttle angle e Engine speed 21 689 80e2e14b TURBINE IMPELLER STATOR INPUT SHAFT STATOR SHAFT PISTON COVER SHELL INTERNALLY TOOTHED DISC CARRIER CLUTCH PLATE SET 10 EXTERNALLY TOOTHED DISC CARRIER 11 TURBINE DAMPER 21 690 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX OPERATION The converter impeller driving member 2 which is integral to the converter housing and bolted to the engine drive plate rotates at engine speed The con verter turbine drive
112. djust with snap ring 4 if necessary Snap rings are available in thicknesses of 2 6 mm 0 102 in 2 9 mm 0 114 in 3 2 mm 0 126 in 3 5 mm 0 138 in 3 8 mm 0 150 in and 4 1 mm 0 162 in 19 Insert front freewheeling clutch F1 2 and fit snap ring 3 The freewheeling clutch F1 2 must be installed in the direction of the arrow AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX LIN 80e43dd2 OUTER MULTIPLE DISC 1 8MM 0 071 IN OUTER MULTIPLE DISC 2 8MM 0 110 IN OUTER MULTIPLE DISC 4 0MM 0 158 IN K1 OUTER DISC CARRIER SNAP RING FRICTION DISCS DISC SPRING PISTON 81319a1e OUTER MULTIPLE DISCS OUTER MULTIPLE DISC 4 0MM 0 158 IN K1 OUTER DISC CARRIER SNAP RING INNER MULTIPLE DISCS DISC SPRING PISTON LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 647 K2 INPUT CLUTCH DISASSEMBLY 80 43 01 Input Clutch K2 Components 1 NEEDLE ROLLER BEARING 11 SPRING RETAINER SEALING O RING eer INNER DISC CARRIER WITH INTEGRATED FRONT GEAR 12 SPRING RETAINER 3 THRUST BEARING 13 SNAP RING 4 TORLON SEAL RINGS 14 DISC SPRING 5 INPUT SHAFT AND K2 CLUTCH 15 EXTERNALLY TOOTHED PLATE 1 8 MM 0 071 IN 6 PISTON OUTER SEAL RING O RING 16 MUL
113. e Electronic malfunctions e Transfer case performance if equipped Diagnosis of these problems should always begin by checking the easily accessible variables fluid level and con dition gearshift cable adjustment Then perform a road test to determine if the problem has been corrected or if more diagnosis is necessary PRELIMINARY Two basic procedures are required One procedure for vehicles that are drivable and an alternate procedure for disabled vehicles will not back up or move forward VEHICLE 1 DRIVABLE 1 Check for transmission fault codes using the appropriate scan tool 2 Check fluid level and condition 3 Adjust gearshift cable if complaint was based on delayed erratic or harsh shifts 4 Road test and note how transmission upshifts downshifts and engages VEHICLE IS DISABLED 1 Check fluid level and condition 2 Check for broken or disconnected gearshift cable 3 Check for cracked leaking cooler lines or loose or missing pressure port plugs 4 Raise and support vehicle on safety stands start engine shift transmission into gear and note following a If propeller shaft turns but wheels do not problem is with differential or axle shafts b If propeller shaft does not turn and transmission is noisy stop engine Remove oil pan and check for debris If pan is clear remove transmission and check for damaged driveplate converter oil pump or input shaft c If propeller shaft does not turn and transmi
114. e disc 3 11 During the measurement the snap ring 5 must contact the upper bearing surface of the groove in the outer multiple disc carrier 4 12 The correct clutch clearance for transmissions with double sided friction discs is 2 7 3 1 mm 0 106 0 122 in for three friction disc versions 3 0 3 4 mm 0 118 0 134 in for four disc ver sions 3 3 3 7 mm 0 130 0 146 in for five disc versions and 3 6 4 0 mm 0 142 0 158 in for six disc versions 13 Adjust with snap ring 5 if necessary Snap rings are available in thicknesses of 2 6 mm 0 102 in 2 9 mm 0 114 in 3 2 mm 0 126 in 3 5 mm 0 138 in 3 8 mm 0 150 in and 4 1 mm 0 162 in 14 Insert front freewheeling clutch F1 2 and fit snap ring 3 The freewheeling clutch F1 2 must be installed in the direction of the arrow 15 For transmissions using single sided friction discs use a feeler gauge to determine the play L at three points between the snap ring 4 and outer multiple disc 2 16 During the measurement the snap ring 4 must contact the upper bearing surface of the groove in the outer multiple disc carrier 3 17 The correct clutch clearance for transmissions with single sided friction discs is 2 4 2 8 mm 0 095 0 110 in for six friction disc versions 2 6 3 0 mm 0 102 0 118 in for eight disc versions 2 8 3 2 mm 0 110 0 126 in for ten disc versions and 2 9 3 3 mm 0 114 0 130 in for twelve disc versions 18 A
115. e plate 3 from converter housing 2 21 544 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX SJ 09 0 C2 b MO fe o 5 7 80e3f7ce Remove B2 B3 and Parking Gear 1 SNAP RING 5 2 HOLDING CLUTCH DISCS 6 TRANSMISSION HOUSING 3 SPRING WASHER 7 BOLTS 8 60 4 HOLDING CLUTCH B2 29 Remove multiple disc pack B3 2 and spring washer 3 by removing snap ring 1 in transmission housing To facilitate removal of the snap ring 1 compress the multiple disc pack B3 2 Note which clutch disc is removed just prior to the spring washer 3 for re assembly If the clutch discs are re used this disc must be returned to its original position on top of the spring washer 30 Unscrew Torx socket bolts 7 31 Remove multiple disc holding clutch B2 4 from transmission housing The externally toothed disc carrier for multiple disc holding clutch B2 is also the piston for multiple disc holding clutch B3 32 Remove parking lock gear 5 ASSEMBLY Note If the transmission is being reconditioned clutch seal replacement or replaced it is necessary to perform the TCM Adaptation Procedure using the scan tool Refer to 8 ELECTRICAL ELECTRONIC CON TROL MODULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 545 m o og
116. essary to access the shift nid 6 necessary remove the bolts holding the shield 4 covering the gearshift and park lock cables to the 1 ip a floorpan and remove the shield ae SF 7 Remove the gearshift cable 1 from the shift lever M 2 pin 3 m 8 Remove the gearshift cable retainer 2 from the p nm notch 2 in the shifter assembly QU 5 81348006 9 From under the hood remove the shift cable grom met 2 from the dash panel 10 Remove gearshift cable 1 from vehicle 8134800d 21 624 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX INSTALLATION 1 gt From under the hood route the gearshift cable 1 through the dash panel and toward the shifter assembly From under the hood install the grommet 2 to the dash panel Engage the gearshift cable retainer 2 into the notch 2 in the shifter assembly Install the gearshift cable 1 onto the shift lever pin 3 Loosen the cable adjustment screw 5 if necessary 8134800d 81348000 1 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 6 From under the hood route the gearshift cable 1 forward of the air conditioning lines and the heater hoses 2 and toward the transmission 3 manual lever 7 Raise vehicle
117. etary gear set between the sun gear and the intermediate shaft The freewheel consists of an outer race 4 an inner race 7 a number of locking elements 3 and a cage 6 for these locking elements OPERATION The freewheeling clutch optimizes individual gear shifts They lock individual elements of a planetary gear set together or against the transmission housing in one direction of rotation to allow the torque to be transmitted If the inner race 7 of the freewheeling clutch is locked and the outer race 4 turns counter clockwise 1 the locking elements 3 adopt a diagonal position on account of their special contours allowing the free wheel function The inner race 4 slides under the locking elements 3 with minimal friction If the rota tion of the outer race 4 changes to clockwise 2 the locking elements 3 stand up and lock the outer and inner races 4 7 together LX 80e309a9 80e309a9 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 619 DISASSEMBLY 80e3f7da Freewheeling Clutch F2 1 HOLLOW SHAFT 4 K8 INNER DISC CARRIER AND REAR PLANETARY SUN GEAR 2 F2 CLUTCH SNAP RING 5 RETAINING RING 3 FREEWHEELING CLUTCH F2 6 O RINGS 1 Remove retaining ring 5 from hollow shaft 1 2 Remove rear sun gear 4 with the K3 internally toothed disk carrier and rear freewheeling clutch F2 3 3 Remove snap ring
118. ft center proportional to transmission bearing and axle for noise or output speed contact with other components 2 Transmission output bearing 2 Replace output bearing and noise retest 3 Internal transmission damage 3 Remove disassemble and repair transmission as needed High pitched whine noise 1 Fluid level low 1 Check and adjust fluid level related to engine speed Refer to 21 TRANSMISSION AUTOMATIC NAG1 FILTER STANDARD PROCEDURE 2 Transmission in limp home mode 2 Check TCM for DTCs Repair as needed 3 Filter plugged 3 Check TC out pressure if 10psi check for plugged filter Replace if needed 4 Filter damaged or missing 4 Check for damaged missing filter or cut missing o ring 5 Oil pump bushing worn damaged 5 Visually inspect for worn or damaged pump bushing Replace pump assembly if needed 6 Oil pump gears worn damaged 6 Inspect for worn or damaged pump gears Replace pump assembly if needed 21 530 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX CONDITION POSSIBLE CAUSES CORRECTION Slips on 1 2 upshift 1 Transmission adaptation 1 Check for latest level TCM calibration software Perform the TCM adaptation procedure Refer to 8 ELECTRICAL ELECTRONIC CONTROL MODULES TRANSMISSION CONTROL MODULE STANDARD PROCEDURE 2 Fluid level low 2 Check and adjust fluid level Refer to 21 TRANSMISSION AUTOMATIC NAG1
119. g 20 Screw in Torx socket bolts through the transmis sion housing into the converter housing Tighten the bolts to 20 177 in lbs Note Verify that there are no nicks or other irreg ularities in the surface of the transmission case that will cause an inaccurate measurement 21 Measure end play between park pawl gear and grooved ball bearing in order to select the proper geartrain end play shim 22 Place Gauge Bar 6311 1 on transmission hous ing Using a depth gauge measure from the gauge bar 1 to the parking lock gear 2 80e40044 23 Using a depth gauge measure from the Gauge Bar 6311 1 to the contact surface of the output shaft bearing 2 in the transmission housing 24 Subtract the first figure from the second figure to determine the current end play of the transmis sion Select a shim such that the end play will be 0 3 0 5 mm 0 012 0 020 in Shims are available in thicknesses of 0 2 mm 0 008 in 0 3 mm 0 012 in 0 4 mm 0 016 in and 0 5 mm 0 020 in 25 Install the selected end play shim 80640089 26 Screw in Torx socket bolts through the converter housing into the transmission housing Tighten the bolts to 20 177 in lbs 27 Install output shaft bearing 2 in rear transmission housing Using Bearing Installer 9287 1 install the output shaft bearing 2 into the transmission housing The closed side of the plastic cage 810b94fe
120. g connector with a bayonet lock 80e3edcc Electrical Unit Components SOLENOID CAP SOLENOID CAP BOLT M6X32 BOLT M6X30 LEAF SPRING MODULATING PRESSURE REGULATING SOLENOID VALVE SHIFT PRESSURE REGULATING SOLENOID 3 4 SHIFT SOLENOID TORQUE CONVERTER LOCK UP SOLENOID 10 1 2 4 5 SHIFT SOLENOID 11 2 3 SHIFT SOLENOID 12 ELECTRICHYDRAULIC CONTROL MODULE 13 SHIFT PLATE 21 588 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX ELECTRICAL CONTROL UNIT The electric valve control unit 7 consists of a plastic shell which houses the RPM sensors 1 12 regulating solenoid valves 3 4 solenoid valves 5 6 10 the TCC solenoid valve 11 the park neutral contact 9 and the transmission oil temperature sensor 8 Con ductor tracks integrated into the shell connect the electric components to a plug connection 2 This 13 pin plug connection 2 establishes the connection to the vehicle side cable harness and to the transmis sion control module TCM With the exception of the solenoid valves all other electric components are fixed to the conductor tracks 80e2d06e HYDRAULIC CONTROL UNIT Working Pressure Line Pressure or Operating Pressure p A The working pressure provides the pressure supply to the hydraulic control and the transmission shift elements It is the highest hydraulic pressure in
121. ge are described as a shift group Each shift group contains a command valve a holding pressure shift valve a shift pressure shift valve overlap regulating valve and a solenoid The hydraulic system contains three shift groups 1 2 4 5 2 3 and 3 4 Each shift group can also be described as being in one of two possible states The active shift group is described as being in the shift phase when it is actively engaging disengaging a clutch combination The 1 2 4 5 shift group control the B1 and K1 clutches The 2 3 shift group controls the K2 and clutches The 3 4 shift group controls the and B2 clutches OPERATION The transmission control is divided into the electronic and hydraulic transmission control functions While the elec tronic transmission control is responsible for gear selection and for matching the pressures to the torque to be trans mitted the transmission s power supply control occurs via hydraulic elements in the electrohydraulic control module The oil supply to the hydraulic elements such as the hydrodynamic torque converter the shift elements and the hydraulic transmission control is provided by way of an oil pump connected with the torque converter The Transmission Control Module TCM allows for the precise adaptation of pressures to the corresponding oper ating conditions and to the engine output during the gearshift phase resulting in a noticeable improvement in shift quality The engine speed limit can be re
122. he internally toothed disc carrier of multiple disc clutch K1 3 PUMP OIL DESCRIPTION The oil pump 2 crescent type pump is installed in the bellhousing behind the torque converter and is driven by the drive flange of the torque converter The pump creates the oil pressure required for the hydrau lic procedures LX 80e3871a 80e2c8f4 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 657 OPERATION When the engine is running the oil is pumped through the inlet chamber 5 along the upper and lower side of the crescent 1 to the pressure chamber 6 of the housing The meshing of the teeth prevents oil flowing from the delivery side to the intake side An external gear 3 is eccentrically mounted in the pump housing The external gear is driven by the internal gear 4 which is connected to the torque converter hub DISASSEMBLY 1 Remove pump gears 1 and 2 from pump housing 2 Remove the inner oil pump seal 1 3 Replace the outer oil pump O ring 2 80e2c8f4 ijj m i o eM gt gt y CS lt 80 46812 80e400e1 21 658 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX INSPECTION Before measuring any oil pump components perform a thorough visual inspection of all the components If any sign of sc
123. holes in the B2 and B3 piston guide 4 3 Insert B2 piston 10 in B3 piston 8 21 638 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 4 Insert piston guide ring 2 The valve 1 in the pis ton guide ring must be on top 80 43 9 5 Insert disc spring 14 and spring plate 15 Insert disc spring with the curvature towards the spring plate 6 Place Multi use Spring Compressor 8900 on the disc spring 14 and compress the spring until the groove for the snap ring is exposed 7 Insert snap ring 16 Note Pay attention to sequence of discs If the original clutch discs are reused be sure to return the disc identified on disassembly as belonging on top of the disc spring 3 to its original location Place new fric tion multiple discs in ATF fluid for one hour before installing 8 Insert disc spring 3 and multiple disc pack 2 in the B2 outer multiple disc carrier 9 Insert snap ring 1 Note During the measurement the snap ring 8 must contact the upper bearing surface of the groove in the outer multiple disc carrier 10 Measure the B2 clutch pack clearance by mount ing the Pressing Tool 8901 1 on outer multiple disc 11 Using a lever press compress the pressing tool as far as the stop then the marking ring is still 80e43cf8 LX The correct clutch clearance is AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION v
124. installed When working with single sided friction discs an externally lugged disc is installed first followed by an internally lugged disc and continuing on until all the required discs are installed All single sided discs are installed with the friction side up Note Place new friction multiple discs in ATF fluid for one hour before installing 21 631 81204765 80e43b13 6 Measure B1 clutch clearance by mounting Pressing Tool 8901 1 on outer multiple disc 7 Using a lever press compress pressing tool as far as the stop then the marking ring is still visible see small arrow 21 632 8 For transmissions using double sided friction discs use a feeler gauge to determine the play L at three points between the snap ring 6 and outer multiple disc 4 During the measurement the snap ring 6 must contact the upper bearing sur face of the groove in the outer multiple disc carrier 5 The correct clearance for transmissions using double sided friction discs is 2 3 2 7 mm 0 091 0 106 in for two friction disc versions 2 7 3 1 mm 0 106 0 122 in for three disc versions and 3 0 3 4 mm 0 118 0 134 in for four disc ver sions Adjust with snap ring 6 if necessary Snap rings are available in thicknesses of 2 6 mm 0 102 in 2 9 mm 0 114 in 3 2 mm 0 126 in 3 5 mm 0 138 in 3 8 mm 0 150 in and 4 1 mm 0 162 in 10 For transmissions u
125. ion Tighten bolts to 47 35 ft lbs Lower transmission onto crossmember and install bolts attaching transmission mount to crossmem ber Tighten clevis bracket to crossmember bolts 2 to 47 N m 39 ft lbs Remove engine support fixture Install the transmission 3 to engine oil pan 2 bolts 1 Tighten to 39 N m 29 ft lbs 8131d398 8131d397 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 555 22 Connect the gearshift cable 1 to the transmis sion manual shift lever 3 8131d39a 23 Check O ring on plug connector 1 and replace if necessary 24 Install the plug connector 1 into the guide bush ing 2 Turn bayonet lock of guide bushing 2 clockwise to connect plug connector 1 80e3b14f 25 Position the heat shield 2 onto the transmission housing and install the screw 1 and bolt 3 to hold the shield in place 80e3b115 21 556 CAUTION It is essential that correct length bolts be used to attach the converter to the driveplate Bolts that are too long will damage the clutch sur face inside the converter 26 Install all torque converter to driveplate bolts 1 by hand 27 Verify that the torque converter is pulled flush to the driveplate Tighten bolts to 42 N m 30 5 ft Ibs 28 Install the torque converter bolt access cover 1 onto the transmission I
126. is actuated by the pressures present at the end face in the actuators and a spring It assigns the working pressure p A to the actuator with the higher pressure taking into account the spring force and the effective surface area The other element of the shift group is then unpressurized The valve switches over only during the shift phase and only at a certain pressure ratio between the overlap pressure p U and the shift pressure p S LX _ AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 599 Shift Pressure Shift Valve 242 80e33cde Shift Pressure Shift Valve 1 1 2 4 5 COMMAND VALVE 3 HOLDING CLUTCH 1 2 DRIVING CLUTCH 4 1 2 4 5 SHIFT PRESSURE SHIFT VALVE When the multiple disc brake B1 8 is activated the working pressure p A is applied to the end face of the 1 2 4 5 shift pressure shift valve 4 via the command valve 1 Its shift state is maintained during the shift phase by substituting the shift element pressure acting on its end face and which is variable during the shift phase with a corresponding constant pressure When the multi plate clutch K1 2 is activated the end face of the shift valve is unpressurized during the stationary and shift phases so the shift state is maintained during the shift phase in this case too Lubrication Pressure Regulating Valve At the working pressure regulating
127. is controlled Some of the possibilities include variable force pulse width modulated constant ON or duty cycle The variable force and pulse width modulated versions utilize similar methods to control the current flow through the solenoid to position the solenoid plunger at a desired position somewhere between full ON and full OFF The constant ON and duty cycled versions control the voltage across the solenoid to allow either full flow or no flow through the solenoid s valve 21 678 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX UPSHIFT DOWNSHIFT SOLENOID VALVES The solenoid valves 1 for upshifts and downshifts are located in the shell of the electric control unit and pressed against the shift plate with a spring The solenoid valves 1 initiate the upshift and down shift procedures in the shift plate The solenoid valves 1 are sealed off from the valve housing of the shift plate 5 by two O rings 4 6 The contact springs 8 at the solenoid valve engage in a slot in the conductor tracks 7 The force of the con tact spring 8 ensures safe contacts AS 5550909 VQ 80e399e6 MODULATING PRESSURE CONTROL SOLENOID VALVE The modulating pressure control solenoid valve 1 is located in the shell of the electric valve control unit and pressed against the shift plate by a spring Its purpose is control the modulating pressure depend ing on the con
128. isible see small arrow Using a feeler gauge determine the play L at three points between the snap ring 8 and outer multiple disc 7 1 9 2 3 mm 0 075 0 091 in for the four friction disc versions and 2 0 2 4 mm 0 079 0 095 in for the five disc versions Adjust with snap ring 8 if necessary Snap rings are available in thicknesses of 2 9 mm 0 114 in 3 2 mm 0 126 in 3 5 mm 0 138 in 3 8 mm 0 150 in and 4 1 mm 0 162 in 21 639 80e43cf1 2 OUTER DISC CARRIER FRICTION DISCS DISC SPRING B2 PISTON OUTER MULTIPLE DISC 1 8 MM 0 071 IN OUTER MULTIPLE DISC 1 8 MM 0 071 IN OUTER MULTIPLE DISC 6 5 MM 0 256 IN SNAP RING 21 640 CLUTCHES INPUT DESCRIPTION AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 3 r 1 4 2 5 fee 20 19 18 16 12 11 10 9 8 7 6 80e2f163 Input Clutches 1 K1 CLUTCH 12 CENTER PLANETARY GEARSET SUN GEAR 2 K2 CLUTCH 13 K2 CLUTCH EXTERNALLY TOOTHED DISC CARRIER 3 EXTERNALLY TOOTHED DISC 4 INTERNALLY TOOTHED DISC 5 CLUTCH 6 CLUTCH EXTERNALLY TOOTHED DI
129. issions using double sided friction discs use feeler gauge to determine the play L at three points between the snap ring 8 and outer multiple disc 2 During the measurement the snap ring 8 must contact the upper bearing surface of the groove in the outer multiple disc carrier The correct clutch clearance for transmissions with double sided friction discs is 2 3 2 7 mm 0 091 0 106 in for three friction disc versions 2 4 2 8 mm 0 095 0 110 in for four disc ver sions and 2 5 2 9 mm 0 099 0 114 in for five disc versions Adjust with snap ring 8 if necessary Snap rings are available in thicknesses of 2 0 mm 0 079 in 2 3 mm 0 091 in 2 6 mm 0 102 in 2 9 mm 0 114 in 3 2 mm 0 126 in and 3 5 mm 0 138 in LX 80e43e19 80e43e15 OUTER DISC CARRIER OUTER MULTIPLE DISC 4 0 MM 0 158 IN OUTER MULTIPLE DISC 2 8 MM 0 110 IN OUTER MULTIPLE DISC 1 8 MM 0 079 IN DISC SPRING PISTON FRICTION DISCS 2 1 MM 0 083 IN SNAP RING LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 655 13 For transmissions using single sided friction discs use a feeler gauge to determine the play L at 1 2 3 4 three points between the snap ring 7 and outer multiple disc 2 14 During the measurement the snap ring 7 must contact the upper bearing surface of the groove in the outer multiple dis
130. ition switch from being turned to the LOCK position unless the shifter is in the gated PARK position 8111e2ba 21 584 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX The following chart describes the normal operation of the Brake Transmission Shift Interlock BTSI system If the expected response differs from the vehicle s response then system repair and or adjustment is necessary ACTION EXPECTED RESPONSE pedal pedal pedal 4 Leave shifter in any gear except PARK and try to 4 Key cannot be returned to the LOCK position return key to the LOCK position 5 Return shifter to PARK and try to remove the key 5 Key can be removed after returning to LOCK position 6 With the key removed and the brake depressed try 6 Shifter cannot be shifted out of PARK to shift out of PARK NOTE Any failure to meet these expected responses requires system adjustment or repair BTSI Override In the event of an electrical failure the vehicle can be shifted out of PARK by using the following procedure 1 Turn the key to the ACC or ON position 2 Remove the liner to the cubby bin to the right side of the shifter 3 Depress the BTSI override 2 on the side of the shifter assembly 1 4 While the override is depressed move the shifter out of the PARK position 5 Return the cubby bin liner to its original location N
131. just gearshift cable Refer to 21 TRANSMISSION AND TRANSFER CASE AUTOMATIC TRANSMISSION GEAR SHIFT CABLE ADJUSTMENTS 3 Burrs on ignition key 3 Remove burrs and cycle key several times to verify operation 4 Binding or broken components 4 Inspect system components and repair replace components as necessary VEHICLE WILL NOT START 1 Misadjusted gearshift cable 1 Adjsut gearshift cable Refer to UNLESS SHIFTER IS HELD 21 TRANSMISSION AND FORWARD OR REARWARD OF TRANSFER CASE AUTOMATIC THE PARK POSITION TRANSMISSION GEAR SHIFT CABLE ADJUSTMENTS ADJUSTMENTS BRAKE TRANSMISSION SHIFT INTERLOCK The park interlock cable is part of the brake shift lever interlock system Correct cable adjustment is important to proper interlock operation The gear shift and park lock cables must both be correctly adjusted in order to shift out of PARK ADJUSTMENT PROCEDURE 1 Remove floor console as necessary for access to the park lock cable Refer to 23 BODY INTERIOR FLOOR CONSOLE REMOVAL 2 Shift the transmission into the PARK position 3 Turn ignition switch to LOCK position Be sure ignition key cylinder is in the LOCK position Cable will not adjust correctly in any other position Note If the key will not turn to the LOCK position pull up on the cable lock button and manually move the cable in and out until the key can be turned to the LOCK position Pull cable lock button up to release cable if necessary
132. l contact The temperature signal is transferred to the TCM only when the dry reed contact of the park neutral contact is closed in REVERSE or a forward gear position 80e3a4be 21 684 AUTOMATIC TRANSMISSION SERVICE INFORMATION Refer to the Transmission Temperature Sensor Speci fications table for the relationship between transmis sion temperature sensor voltage and sensor resistance LX TRANSMISSION TEMP SENSOR SPECIFICATIONS TEMPERATURE VOLTAGE RESISTANCE CHART TEMPERATURE TEMPERATURE F RESISTANCE 50 58 506 0 45 49 534 0 40 564 0 31 593 0 22 624 0 654 0 686 0 718 0 750 0 783 0 817 0 851 0 886 0 921 0 80e3afbe LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 685 CONVERTER TORQUE DESCRIPTION CAUTION The torque converter must be replaced if a transmission failure resulted in large amounts of metal or fiber contamination in the fluid The torque converter is a hydraulic device that cou ples the engine crankshaft to the transmission The torque converter consists of an outer shell with an internal turbine 1 a stator 3 an overrunning clutch an impeller 2 and an electronically applied converter clutch The converter c
133. late and compress the spring until the snap ring 1 is exposed 4 Remove snap ring 1 5 Take out disc spring 7 and remove piston 6 by carefully blowing compressed air into the drilled oil feed passage 6 Remove snap ring 3 and take out front freewheel ing clutch F1 2 Take care when removing the F1 clutch to prevent the clutch sprags from falling out If this occurs the clutch must be replaced 812d49a0 21 644 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX ASSEMBLY 80e43dce Input Clutch K1 Components 1 K1 OUTER DISC CARRIER 7 DISC SPRING 2 FREEWHEELING CLUTCH F1 8 SPRING PLATE 3 SNAP RING 9 SPRING PLATE SEALING RING 4 OUTER DISC CARRIER SEALING RING 10 SNAP RING 5 PISTON SEALING RING 11 SNAP RING 6 PISTON 12 MULTIPLE DISC PACK REFER TEXT FOR CORRECT ASSEMBLY ORDER Install piston 6 in the outer multiple disc carrier 1 Check sealing rings 4 and 5 replace if necessary The rounded off edges of the sealing rings must point outwards 2 Insert disc spring 7 Insert disc spring with the curvature towards the piston 3 Insert spring plate 8 Insert spring plate with the curvature towards the sun gear Check sealing ring 9 replace if necessary i LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 645 4 Place Multi use Spring Compressor 8900 2 on spring plate and c
134. ler to turbine turbine to stator and stator to impeller can produce a maximum torque multiplication of about 2 0 1 As the turbine begins to match the speed of the impeller the fluid that was hitting the stator in such as way as to cause it to lock up is no longer doing so In this con dition of operation the stator begins to free wheel and the converter acts as a fluid coupling TORQUE CONVERTER CLUTCH TCC In a standard torque converter the impeller 2 and turbine 1 are rotating at about the same speed and the stator 3 is freewheeling providing no torque mul tiplication By applying the turbine s piston and friction material 9 a total converter engagement can be obtained The result of this engagement is a direct 1 1 mechanical link between the engine and the transmis sion The clutch can be engaged in second third fourth and fifth gear ranges The TCM controls the torque converter by way of internal logic software The programming of the soft ware provides the TCM with control over the torque converter solenoid There are four output logic states that can be applied as follows e No EMCC e Partial EMCC e Full EMCC e Gradual to no EMCC 21 691 4 FLOW 15 MORE NEARLY STRAIGHT THROUGH ANGLE IS LESS X 75 AT STALL 1 CRUISE 80bfe26e 1 DIRECTION STATOR WILL FREE WHEEL DUE TO OIL PUSHING ON BACKSIDE OF VANES 2 FRONT OF ENGINE 3 INCREASED ANGLE AS OIL STRIKES VA
135. lignment with all transmission detent positions Engine starts must be possible with shifter lever in PARK or NEUTRAL gate positions only Engine starts must not be possible in any other gate positions other than PARK or NEUTRAL With the shifter lever handle in the e PARK position apply forward force on center of handle and remove pressure Engine start must be possible e PARK position apply rearward force on center of handle and remove pressure Engine start must be possible e NEUTRAL position engine start must be possible e NEUTRAL position engine running and brakes applied Apply forward force on center of shift handle Trans mission should not be able to shift into REVERSE detent LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 587 UNIT ELECTROHYDRAULIC CONTROL DESCRIPTION The electrohydraulic control unit comprises the shift plate 13 made from light alloy for the hydraulic con trol and an electrical control unit 12 The electrical control unit 12 comprises of a supporting body made of plastic into which the electrical components 1 11 are assembled The supporting body is mounted on the shift plate 13 and screwed to it Strip conductors inserted into the supporting body make the connection between the electrical compo nents and a plug connector The connection to the wir ing harness on the vehicle and the transmission control module TCM is produced via this 13 pin plu
136. lity is controlled by the same solenoid as the park lock As the vehicle accelerates past the calibrated speed threshold the solenoid is energized to block the sideways motion of the shift lever necessary to move from NEUTRAL to REVERSE The reverse inhibit is not released until the vehicle speed falls below approximately 4 7 mph and the shifter is moved out of the shifter position OPERATION With the selector lever in position D the transmission control module TCM automatically shifts the gears that are best suited to the current operating situation This means that shifting of gears is continuously adjusted to current driving and operating conditions in line with the selected shift range and the accelerator pedal position Starting off is always performed in 1st gear The selector lever positions are determined by a sensor assembly internal to the shift lever assembly SLA The sensor assembly identifies the various positions of the SLA according to the following table Shift Lever Position Defalt E mR p 14 D The current selector lever position or if the shift range has been limited the current shift range is indicated in the instrument cluster display The permissible shifter positions and transmission operating ranges are e P Parking lock and engine starting e R Reverse e N Neutral and engine starting no power is transmit
137. lutch provides reduced engine speed and greater fuel economy when engaged Clutch engagement also provides reduced transmis sion fluid temperatures The converter clutch engages in third through fifth gears The torque converter hub drives the transmission oil fluid pump A turbine damper 6 has been added for some appli cations to help improve vehicle noise vibration and harshness NVH characteristics The torque converter is a sealed welded unit that is not repairable and is serviced as an assembly 80e2dcc3 ONRAN TURBINE IMPELLER STATOR INPUT SHAFT STATOR SHAFT TURBINE DAMPER 21 686 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX IMPELLER 2 Q IMPELLER VANE CONSTRUCTION AND CURVATURE 80bfe26a Impeller 1 ENGINE FLEXPLATE 4 ENGINE ROTATION 2 OIL FLOW FROM IMPELLER SECTION INTO TURBINE 5 ENGINE ROTATION SECTION 3 IMPELLER VANES AND COVER ARE INTEGRAL The impeller 3 is an integral part of the converter housing The impeller consists of curved blades placed radially along the inside of the housing on the transmission side of the converter As the converter housing is rotated by the engine so is the impeller because they are one and the same and are the driving members of the system LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 687 TURBINE BLADE CON
138. lutches and actuators are supplied with lubri cating oil The parking lock gear is connected to the output shaft via splines Freewheeling clutches F1 and F2 are used to optimize the shifts The front freewheel F1 is supported on the extension of the stator shaft on the transmission side and in the locking direction connects the sun gear of the front planetary gear set to the transmission housing In the locking direction the rear freewheeling clutch F2 connects the sun gear of the center planetary gear set to the sun gear of the rear planetary gear set 21 498 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX ELECTROHYDRAULIC CONTROL UNIT The electrohydraulic control unit comprises the shift plate made from light alloy for the hydraulic control and an electrical control unit The electrical control unit comprises of a supporting body made of plastic into which the electrical components are assembled The supporting body is mounted on the shift plate and screwed to it Strip conductors inserted into the supporting body make the connection between the electrical components and a plug connector The connection to the wiring harness on the vehicle and the transmission control module TCM is produced via this 13 pin plug connector with a bayonet lock SHIFT GROUPS The hydraulic control components including actuators which are responsible for the pressure distribution before during and after a gear chan
139. n each gear position LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 499 CLUTCH APPLICATION tps ex x 3 TI 4 3991 12 222 NE Limp 1 93 In The shift components required during coast FIRST GEAR POWERFLOW 80e2ac5c 1 TORQUE CONVERTER LOCK UP CLUTCH 2 TORQUE CONVERTER TURBINE 3 TORQUE CONVERTER IMPELLER 4 HOLDING CLUTCH B1 5 HOLDING CLUTCH B3 6 HOLDING CLUTCH B2 7 DRIVING CLUTCH K1 8 FRONT PLANETARY ANNULUS GEAR 9 DRIVING CLUTCH K2 10 CENTER PLANETARY ANNULUS GEAR 11 REAR PLANETARY ANNULUS GEAR 12 DRIVING CLUTCH K3 13 FRONT PLANETARY CARRIER A ENGINE SPEED B TRANSMISSION INPUT SPEED C FIRST GEAR RATIO First Gear Powerflow 14 CENTER PLANETARY CARRIER 15 REAR PLANETARY CARRIER 16 TORQUE CONVERTER STATOR 17 FRONT PLANETARY PINION GEARS 18 CENTER PLANETARY PINION GEARS 19 REAR PLANETARY PINION GEARS 20 FREEWHEELING CLUTCH F1 21 FRONT PLANETARY SUN GEAR 22 CENTER PLANETARY SUN GEAR 23 REAR PLANETARY SUN GEAR 24 FREEWHEELING CLUTCH F2 25 INPUT SHAFT 26 OUTPUT SHAFT D SECOND GEAR RATIO E THIRD GEAR RATIO F FIXED PARTS 21 500 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION
140. n member 1 which reacts from fluid pressure generated by the impeller rotates and turns the transmission input shaft 4 80e2dcc3 TURBINE IMPELLER STATOR INPUT SHAFT STATOR SHAFT TURBINE DAMPER TURBINE As the fluid that was put into motion by the impeller blades strikes the blades of the turbine some of the energy and rotational force is transferred into the turbine and the input shaft This causes both of them turbine and input shaft to rotate in a clockwise direction following the impeller As the fluid is leaving the trailing edges of the turbine s blades it continues in a hindering direction back toward the impeller If the fluid is not redirected before it strikes the impeller it will strike the impeller in such a direction that it would tend to slow it down LX AUTOMATIC TRANSMISSION SERVICE INFORMATION STATOR Torque multiplication is achieved by locking the sta tor s over running clutch to its shaft Under stall condi tions the turbine is stationary the oil leaving the turbine blades strikes the face of the stator blades and tries to rotate them in a counterclockwise direction When this happens the over running clutch of the sta tor locks and holds the stator from rotating With the stator locked the oil strikes the stator blades and is redirected into a helping direction before it enters the impeller This circulation of oil from impel
141. n which the internally toothed discs are seated Annulus gear 16 and annulus gear 11 turn at the same speed as the input shaft 21 If the multi plate clutch K3 5 is actuated via the piston 7 the piston compresses the disc set The sun gear 12 of the center planetary gear set is locked with the sun gear 9 of the rear planetary gear set via the externally toothed disc carrier 6 and the internally toothed disc carrier 8 Sun gear 12 and sun gear 9 turn at the same speed 21 642 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX K1 INPUT CLUTCH DISASSEMBLY 80e43dce Input Clutch K1 Components K1 OUTER DISC CARRIER 7 DISC SPRING FREEWHEELING CLUTCH F1 8 SPRING PLATE SNAP RING 9 SPRING PLATE SEALING RING OUTER DISC CARRIER SEALING RING 10 SNAP RING PISTON SEALING RING 11 SNAP RING PISTON 12 MULTIPLE DISC PACK REFER TO TEXT FOR CORRECT ASSEMBLY ORDER 1 2 Remove snap ring 11 from outer multiple disc carrier 6 Take multiple disc pack 12 out of outer multiple disc carrier 6 Note which clutch disc is removed just prior to the spring plate 8 for re assembly If the clutch discs are re used this disc must be returned to its original position on top of the spring plate LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 643 3 Place Multi use Spring Compressor 8900 2 on the spring p
142. nd discon nect the park lock cable 1 from the shifter mechansim cam 3 and the notch in the shifter assembly 3 813787 8 7 Disengage all wiring connectors 2 from the shifter assembly 1 813a3ca2 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 675 8 Remove all nuts 2 holding the shifter assembly 1 to the floor pan 9 Remove the shifter assembly 1 from the vehicle INSTALLATION 1 Install shifter assembly 1 onto the shifter assem bly studs on the floor pan 2 Install the nuts 2 to hold the shifter assembly 1 onto the floor pan Tighten nuts to 7 652 in lbs 21 676 N Place the floor shifter lever in PARK position Loosen the adjustment screw 5 on the gearshift cable 1 Install the gearshift cable 1 to the shift lever pin 3 Install the park lock cable 1 to the shift mecha nism cam 3 and the notch in the shifter assembly 2 Verify that the key is in the LOCK position and remains there until the cable is fully adjusted Verify that the park lock cable adjustment tab is pulled upward to the unlocked position AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 8134800b 813787 8 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 677 9 I
143. nd out and record reading End play should be 0 3 0 5 mm 0 012 0 020 in Adjust as necessary LX 33 34 35 36 37 38 39 40 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 551 Install the output shaft washer onto the output shaft Install a new transmission rear seal into the trans mission case with Seal Installer 8902A 1 Place the transmission in PARK to prepare for the installation of the output shaft nut Install the propeller shaft flange onto the output shaft and install an new flange nut Tighten the flange nut to 120 88 5 ft lbs Place the Staking Tool 9078 2 and Driver Handle C 4171 onto the output shaft Rotate the Staking Tool 9078 2 until the align ment pin 3 engages the output shaft notch 4 Press downward on the staking tool 1 until the staking pin 3 contacts the output shaft nut flange 2 Strike the Driver handle C 4171 with a suitable hammer until the output shaft nut is securely staked to the output shaft A N 810b94e8 810b9520 810b94b2 21 41 42 43 44 45 552 Install electrohydraulic unit 2 Tighten the bolts to 8 71 in lbs Install oil filter 4 Install oil pan 5 Tighten the bolts to 8 N m 71 in lbs Install guide bushing 12 Install the torque converter AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION
144. ng 5 Insert disc spring with the curvature towards the piston 3 Mount the Multi use Spring Compressor 8900 9 on the spring plate and clamp until the snap ring groove is exposed 4 Insert snap ring 4 The collar of the snap ring must point towards the multiple disc pack CAUTION When working with double sided friction discs an externally lugged steel plate is installed first followed by a friction disc and continuing on until all the required discs are installed When working with single sided friction discs an externally lugged disc is installed first followed by an internally lugged disc and continuing on until all the required discs are installed single sided discs are installed with the fric tion side up Note Pay attention to the sequence of discs If the original clutch discs are reused be sure to return the disc identified on disassembly as belonging on top of the spring plate 3 to its original location Note Place new friction multiple discs in ATF fluid for one hour before installing 5 Install disk spring 3 and multiple disc pack 2 in outer multiple disc carrier 8 6 Insert snap ring 1 21 7 8 10 654 AUTOMATIC TRANSMISSION SERVICE INFORMATION Measure the clutch clearance by mounting Pressing Tool 8901 1 on outer multiple disc Using a lever press compress pressing tool as far as the stop then the marking ring is still visible see small arrow For transm
145. nstall the access cover bolt 2 and tighten to 11 N m 8 ft lbs 29 Install starter motor 1 Refer to 8 ELECTRICAL STARTING STARTER MOTOR INSTALLATION AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 8131439 81314394 8131939 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 557 30 Connect the cooler line fittings 2 and cooler lines 1 to the transmission 31 Install transmission fill tube 32 Install exhaust components 33 Align and connect the propeller shaft 1 Refer to 3 DIFFERENTIAL amp DRIVELINE PROPELLER SHAFT INSTALLATION 34 Adjust gearshift cable if necessary 35 Lower vehicle 36 Connect negative battery cable 37 Fill the transmission with the appropriate transmis sion fluid Refer to LUBRICATION amp MAINTE NANCE FLUID TYPES DESCRIPTION according to the standard procedure Refer to 21 TRANSMISSION AUTOMATIC NAG1 FLUID AND FILTER STANDARD PROCEDURE 81314399 Note If the transmission is being reconditioned clutch seal replacement or replaced it is neces sary to perform the TCM Adaptation Procedure using the scan tool Refer to 8 ELECTRICAL ELECTRONIC CONTROL MODULES TRANSMIS SION CONTROL MODULE STANDARD PROCEDURE 38 Verify proper operation 8131d39b 21 558 AUTOMATIC TRANSMISSION 1 SCHEMATICS
146. nstall the wiring harness connectors 2 to the shifter assembly 10 Verify that the shift lever is in the PARK position 11 Tighten the adjustment screw to 7 65 in lbs 12 Verify that the key in the LOCK position and the shifter is in PARK 13 Push downward on the park lock cable adjust ment tab to lock the adjustment 14 Verify correct shifter park lock and BTSI opera tion 15 If necessary install the shield covering the gear shift and park lock cables to the floorpan and install the bolts to hold the shield to the floorpan 16 Install any console parts removed for access to 813a3ca2 shift lever assembly and shift cables Refer to 23 BODY INTERIOR FLOOR CONSOLE INSTAL LATION SOLENOID DESCRIPTION The typical electrical solenoid used in automotive applications is a linear actuator It is a device that produces motion in a straight line This straight line motion can be either forward or backward in direction and short or long distance A solenoid is an electromechanical device that uses a magnetic force to perform work It consists of a coil of wire wrapped around a magnetic core made from steel or iron and a spring loaded movable plunger which performs the work or straight line motion The solenoids used in transmission applications are attached to valves which can be classified as normally open or normally closed The normally open solenoid valve is defined as a valve which allo
147. olenoid valve remains actuated and therefore open until the shifting process is complete The shift pressure p SV to the com mand valve is reduced to zero as soon as the power supply to the solenoid valve is interrupted aAA D RSS 80e399e6 MODULATING PRESSURE CONTROL SOLENOID VALVE The modulating pressure regulating solenoid valve 1 assigns a proportional pressure to the current which is controlled by the TCM according to the load Zu LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 681 TORQUE CONVERTER LOCKUP CLUTCH PWM SOLENOID VALVE The torque converter lockup PWM solenoid 1 valve converts pulse wave modulated current controlled by the TCM into the appropriate hydraulic control pres sure p S TCC SEXY 5250509 lt gt XS gt lt 80e39b7c SHIFT PRESSURE CONTROL SOLENOID VALVE The shift pressure regulating solenoid valve 1 assigns a proportional pressure to the current which is controlled by the TCM according to the load 5 0264 80e39af5 21 682 AUTOMATIC TRANSMISSION SERVICE INFORMATION LX CONTACT TEMPERATURE SENSOR PARK NEUTRAL DESCRIPTION PARK NEUTRAL CONTACT The park neutral contact 4 is located in the shell of the electric control unit and is fixed to the conductor tracks
148. ompress the spring until the groove of the snap ring 1 is exposed 5 Insert snap ring 1 After installing check snap ring for correct seat CAUTION When working with double sided fric tion discs an externally lugged steel plate is installed first followed by a friction disc and con tinuing on until all the required discs are installed When working with single sided friction discs an externally lugged disc is installed first followed by an internally lugged disc and continuing on until all the required discs are installed All single sided discs are installed with the friction side up Note Pay attention to the sequence of discs If the original clutch discs are reused be sure to return the disc identified on disassembly as belonging on top of the spring plate 8 to its original loca tion Note Place new friction multiple discs in ATF fluid for one hour before installing 6 Insert multiple disc pack 12 in the outer multiple disc carrier 7 Insert snap ring 11 812d49a0 80e43dd6 8 Measure the K1 clutch pack clearance by mounting Pressing Tool 8901 1 on outer multiple disc 9 Using a lever press compress pressing tool as far as the stop then the marking ring is still visible see small arrow 21 646 10 For transmissions using double sided friction discs use a feeler gauge to determine the play L at three points between the snap ring 5 and outer multipl
149. onto output shaft Install clutch 7 Mount retaining ring shim thrust needle bearing and thrust washer 8 11 Using grease insert the upper two Teflon rings 1 in the groove so that the joint remains together SO e mo LX AUTOMATIC TRANSMISSION SERVICE INFORMATION Note During the test apply a contact force by hand to K3 in the direction of the arrow 8 Inspect axial play between shim 10 and retaining ring 11 Check axial play S between shim 10 and retaining ring 1 using a feeler gauge Clear ance should be 0 15 0 6 mm 0 006 0 024 in Shims are available in thicknesses of 3 0 mm 0 118 in 3 4 mm 0 134 in and 3 7 mm 0 146 in Adjust as necessary MECHANISM SHIFT DESCRIPTION The automatic transmission is operated with the help of a shift lever assembly SLA 1 located in the floor console There are four positions to which the selec tion lever can be shifted P R N D In addition the selector lever can be moved sideways in position D to adjust the shift range All selector lever positions as well as selected shift ranges in position D are identified by the SLA The information is then sent to the transmission control module TCM via a hardwire connection At the same time the selector lever positions P R N and D are transmitted by a shift cable to the selector shaft in the transmission The SLA is comprised of the following func
150. onverter 1 2 Place transmission in a vertical position 3 Measure input shaft end play as follows a Attach Adapter 8266 18 2 to Handle 8266 8 1 Attach dial indicator C 3339 3 to Handle 8266 8 1 Install the assembled tool onto the input shaft of the transmission and tighten the retaining screw on Adapter 8266 18 2 to secure it to the input shaft Position the dial indicator plunger against a flat spot on the oil pump and zero the dial indica tor Move the input shaft in and out Record the maximum travel for assembly reference 80e3f7ca 810afafc LX Loosen guide bushing 12 and remove from trans mission housing Detach oil pan 5 Remove oil filter 4 Unscrew Torx socket bolts 3 and remove electro hydraulic unit 2 Place the transmission in PARK to prepare for the removal of the output shaft nut Remove the nut holding the propeller shaft flange to the output shaft and remove the flange 10 Remove the transmission rear oil seal with a suit 11 able slide hammer and screw Remove the transmission output shaft washer Be sure to tag the washer since it is very similar to the geartrain end play shim and they must not be interchanged 12 Remove the transmission rear output shaft bear ing retaining ring 1 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 539 80e3b0fb
151. onverter is fully seated 7 If necessary temporarily secure converter with C clamp attached to the converter housing 8 Install the transmission in the vehicle 9 Fill the transmission with the recommended fluid 80e3aa8e LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 693 SEAL TORQUE CONVERTER HUB REMOVAL 1 Remove the torque converter Refer to 21 TRANSMISSION AUTOMATIC NAG1 TORQUE CONVERTER REMOVAL 2 Remove the torque converter hub seal with suitable screw and slide hammer INSTALLATION 1 Position the torque converter hub seal 1 over the input shaft and against the transmission oil pump 97 N 4 WA NS lt of o O 2151729 810b9af9 2 Using Seal Installer 8902A 2 install a new torque converter hub seal gt 3 Install the torque converter Refer to 21 TRANS 00 MISSION AUTOMATIC NAG1 TORQUE CON O OCR Whe VERTER INSTALLATION e LS N HAR gt IE 6 NS 2 810b9b0a
152. oring scratches or other damage is seen replace the oil pump as an assembly SIDE CLEARANCE Side clearance is the difference between the thickness of the pump gears and the depth of the pocket in the pump housing Side clearance can be measured by laying a flat plate across the mounting face of the pump housing and measuring the distance between the plate and the gears Acceptable side clearance e Inner gear 0 064 mm 0 0025 in max e Outer gear 0 069 mm 0 0027 in max TIP CLEARANCE Tip clearance is the difference between the tip diame ters of the gear teeth and the corresponding diameters of the pocket in the pump housing Tip clearance for the inner gear can be checked by moving the inner gear into tight mesh 2 with the outer gear as shown Clearance between the ID of the 4 crescent feature of the housing and the OD of the teeth of the inner gear 3 should then me measured at a point 37 mm from the corner of the crescent 1 feature as shown below Acceptable tip clearance for inner gear e 0 85 mm 0 033 in max 813 7227 ASSEMBLY 1 Install new inner oil pump seal 1 with Seal Installer 8902 A 2 Replace O ring 2 80e400e1 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 3 Lubricate pump gears and place in the pump hous ing Insert pump gear 1 so that the chamfer arrow points towards the pump housing BEARING OUTPUT SHAFT REMOVAL 1 Raise and su
153. pport vehicle 2 Remove the propeller shaft Refer to 3 DIFFER ENTIAL amp DRIVELINE PROPELLER SHAFT PRO PELLER SHAFT REMOVAL 3 Verify that the transmission is in PARK in order to prepare for the removal of the output shaft nut 4 Remove the nut holding the propeller shaft flange to the output shaft and remove the flange 5 Remove the transmission rear oil seal with a suit able slide hammer and screw 6 Remove the transmission output shaft washer Be sure to tag the washer since it is very similar to the geartrain end play shim and they must not be inter changed 7 Remove the transmission rear output shaft bearing retaining ring 1 21 659 mmm ge 80646812 80e3f910 21 660 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 8 Position Bearing Remover 9082 1 over the inner race of the output shaft bearing 9 Slide the collar 3 on the Bearing Remover 9082 1 downward over the fingers 3 of the tool 810d3b74 81043591 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 661 CAUTION Verify that the geartrain end play shim has remained on the output shaft and against the park gear The shim may be adhered to the bear ing inner race Retrieve the shim from the bearing and install over the output shaft and against the park gear 10 Remo
154. ration Trailer towing or similar high load operation will overheat the transmission fluid if the vehicle is improperly equipped Such vehicles should have an auxiliary transmission fluid cooler a heavy duty cooling system and the engine axle ratio combination needed to handle heavy loads FLUID CONTAMINATION Transmission fluid contamination is generally a result of e adding incorrect fluid e failure to clean dipstick and fill tube when checking level e engine coolant entering the fluid e internal failure that generates debris e overheat that generates sludge fluid breakdown e failure to replace contaminated converter after repair The use of non recommended fluids can result in transmission failure The usual results are erratic shifts slippage abnormal wear and eventual failure due to fluid breakdown and sludge formation Avoid this condition by using rec ommended fluids only The dipstick cap and fill tube should be wiped clean before checking fluid level Dirt grease and other foreign mate rial on the cap and tube could fall into the tube if not removed beforehand Take the time to wipe the cap and tube clean before withdrawing the dipstick Engine coolant in the transmission fluid is generally caused by a cooler malfunction The only remedy is to replace the radiator as the cooler in the radiator is not a serviceable part If coolant has circulated through the transmission an overhaul is necessary The torque converter should be
155. sing single sided friction discs use a feeler gauge to determine the play L at three points between the snap ring 5 and outer multiple disc 3 During the measurement the snap ring 5 must contact the upper bearing sur face of the groove in the outer multiple disc car rier 4 The correct clearance is 2 2 2 06 mm 0 087 0 102 in for four friction disc versions 2 4 2 8 mm 0 095 0 110 in for six disc versions and 2 6 3 0 mm 0 102 0 118 in for eight disc versions Adjust with snap ring 5 if necessary Snap rings are available in thicknesses of 2 6 mm 0 102 in 2 9 mm 0 114 in 3 2 mm 0 126 in 3 5 mm 0 138 in 3 8 mm 0 150 in and 4 1 mm 0 162 in AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 80e43b17 DISC SPRING OUTER MULTIPLE DISC 1 8 mm 0 071 IN OUTER MULTIPLE DISC 2 8 mm 0 110 IN OUTER MULTIPLE DISC 4 0 mm 0 158 IN B1 OUTER CARRIER SNAP RING INNER MULTIPLE DISCS PISTON 81319c1b DISC SPRING OUTER MULTIPLE DISC OUTER MULTIPLE DISC 4 0 mm 0 158 IN B1 OUTER CARRIER SNAP RING INNER MULTIPLE DISCS PISTON LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 633 12 Install the teflon rings 1 onto the B1 plate carrier hub 2 13 Coat Teflon rings 1 lightly with grease and insert in the groove so that the join
156. sly to the opposing face of the piston B2 6 The multiple disc holding clutch B2 begins to close The pressure on the opposing face of the piston B2 6 ensures a soft activation of the multiple disc holding clutch B2 21 524 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX First Gear Engaged p A 80e3734f First Gear Engaged 1 HOLDING CLUTCH B1 11 PRESSURE HOLDING VALVE 2 DRIVING CLUTCH K1 12 3 4 HOLDING PRESSURE SHIFT VALVE 3 HOLDING CLUTCH B3 13 3 4 COMMAND VALVE 4 DRIVING CLUTCH 14 3 4 SHIFT PRESSURE SHIFT VALVE 5 HOLDING CLUTCH B2 PISTON 15 3 4 OVERLAP REGULATING VALVE 6 HOLDING CLUTCH B2 PISTON OPPOSING FACE 16 BALL VALVE 7 SHIFT PRESSURE REGULATING SOLENOID 17 1 2 4 5 COMMAND VALVE 8 SHIFT PRESSURE REGULATING VALVE 18 1 2 4 5 COMMAND VALVE 9 SHIFT VALVE B2 19 BALL VALVE 10 3 4 SHIFT SOLENOID The TCM monitors the activation sequence via the speed of the input shaft which slows down as the frictional connection in the multiple disc holding clutch increases When the speed drops to the specified level the TCM shuts off the power to the 3 4 shift solenoid valve 10 The spring chamber of the shift valve B2 9 is depressurized and switches downwards This connects the line to the opposing face of the piston B2 6 with the pressure holding valve 11 The pressure on the opposing face of the piston B2 6 drops to a resid
157. ssion is not noisy perform hydraulic pressure test to determine if problem is hydraulic or mechanical ROAD TESTING Before road testing be sure the fluid level and control cable adjustments have been checked and adjusted if nec essary Verify that all diagnostic trouble codes have been resolved Observe engine performance during the road test A poorly tuned engine will not allow accurate analysis of trans mission operation Operate the transmission in all gear ranges Check for shift variations and engine flare which indicates slippage Note if shifts are harsh spongy delayed early or if part throttle downshifts are sensitive Slippage indicated by engine flare usually means clutch overrunning clutch or line pressure problems A slipping clutch can often be determined by comparing which internal units are applied in the various gear ranges The Clutch Application chart CLUTCH APPLICATION provides a basis for analyzing road test results 21 526 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX CLUTCH APPLICATION E LES po o mc Lp I 1 41 AUTOMATIC TRANSMISSION CONDITION POSSIBLE CAUSES CORRECTION Harsh N D Engagement 1 Transmission adaptation 1 Check for latest level TCM Harsh N R Engagement calibration software Perform the TCM adaptation procedure Refer to 8 ELECTRICAL ELECTRONIC CONTROL MO
158. sure if 10psi check for plugged filter Replace if needed 5 Filter damaged or missing 5 Check for damaged missing missing o ring filter or cut missing o ring 6 Valve Body Malfunction 6 Inspect valve body for stuck Sticky regulator valve or shift group valves 7 Oil pump gears worn damaged 7 Inspect pump for damage or excessive clearances Replace if needed No Drive or Reverse 1 Fluid level low 1 Check and adjust fluid level Engagement vehicle will Refer to 21 TRANSMISSION not move AUTOMATIC NAG1 FILTER STANDARD PROCEDURE 2 Misadjusted damaged shift cable 2 Inspect shift system Adjust and or replace worn damaged parts 3 Filter plugged 3 Check TC out pressure if 10psi check for plugged filter Replace if needed 4 Filter damaged or missing 4 Check for damaged missing 5 Hydraulic system Low no line 5 Remove valve body Inspect pressure or sticky stuck regulator valve If valve motion is free replace line pressure solenoid and retest If condition still exists check for worn damaged pump Replace pump assembly if needed 21 528 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION CONDITION POSSIBLE CAUSES CORRECTION Shudder garage shift R D or D R Harsh rolling garage shift R D or D R Engine stalls when transmission is shifted into Ror D Clunk click noise during garage shift from R D or Harsh Upshift or downshift 1 Transmission adaptation 1
159. t 26 and Front Planetary Gear Set The clutch K1 7 is shifted The planetary carrier 13 and sun gear 21 are connected to each other as a result The annulus gear 8 is driven via the input shaft 25 The planetary gear set is locked and turns as a unit Rear Planetary Gear Set The planetary carrier 15 is held against the housing by the engaged multiple disc holding clutch B3 5 The annulus gear 11 turns at a reduced speed due to the mechanical connection to the front planetary carrier 13 The planetary pinion gears 19 turn between the annulus gear 11 and the sun gear 23 The direction is reversed by the held plan etary carrier 15 so that the sun gear 23 turns in the opposite direction to the running direction of the engine Center Planetary Gear Set The annulus gear 10 is held against the housing by the multiple disc holding clutch B3 5 via the mechanical connection to the planetary carrier 15 The sun gear 22 turns backwards due to the engaged multiple disc clutch 12 The planetary gears 18 turn on the fixed annulus gear 10 and increase the torque from the sun gear 22 to the planetary carrier 14 The output shaft 26 connected to the planetary carrier 14 turns at a reduced speed in the opposite direction to the running direction of the engine LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 513 SHIFT GROUPS SHIFT SEQUENCE 1 2 Shift First Gear Engaged
160. t remains together 81204767 21 634 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX B2 HOLDING CLUTCH DISASSEMBLY 80e43cdd Holding Clutch B2 1 SNAP RING 9 B2 PISTON SEALING RING 2 MULTIPLE DISC PACK 10 B2 PISTON 3 DISC SPRING 11 PISTON GUIDE SEALING RING 4 B2 AND B3 PISTON GUIDE 12 PISTON GUIDE SEALING RING 5 O RING 13 PISTON GUIDE RING 6 B8 PISTON SEALING RING 14 PISTON BACK PRESSURE DISC SPRING 7 B8 PISTON SEALING RING 15 SPRING PLATE 8 B8 PISTON B2 OUTER DISC CARRIER 16 SNAP RING 1 Remove snap ring 1 2 Take multiple disc pack B2 2 and disc spring 3 out of the outer multiple disc carrier B2 8 The outer multiple disc carrier for the multi disc holding clutch B2 is the piston for the multiple disc holding clutch B3 at the same time Note which clutch disc is removed just prior to the disc spring 3 for re assembly If the clutch discs are re used this disc must be returned to its original position on top of the disc spring 3 Place the Multi use Spring Compressor 8900 on the spring disc 14 and compress the spring until the groove for the snap ring is exposed 4 Remove snap ring 16 5 Remove spring plate 15 and disc spring 14 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 635 6 Separate piston guide ring 13 and the B2 piston 10 from the
161. t side of the transmission above the oil pan rail TRANSMISSION GEAR RATIOS The gear ratios for the NAG1 automatic transmission are as follows GSE 3 59 1 2nd 2 19 1 1 41 1 1 00 1 SA Gea eama a 0 88 1 8 16 1 TRANSMISSION HOUSING The converter housing and transmission are made from a light alloy These are bolted together and centered via the outer multi disc carrier of multi disc holding clutch B1 A coated intermediate plate provides the sealing The oil pump and the outer multi disc carrier of the multi disc holding clutch B1 are bolted to the converter housing The stator shaft is pressed into it and prevented from rotating by splines The electrohydraulic unit is bolted to the trans mission housing from underneath A sheet metal steel oil pan forms the closure MECHANICAL SECTION The mechanical section consists of a input shaft output shaft a sun gear shaft and three planetary gear sets which are coupled to each other The planetary gear sets each have four planetary pinion gears The oil pressure for the torque converter lock up clutch and clutch K2 is supplied through bores in the input shaft The oil pressure to clutch is transmitted through the output shaft The lubricating oil is distributed through additional bores in both shafts All the bearing points of the gear sets as well as the freewheeling c
162. t the transmission is in PARK in order to prepare for the installation of the output shaft nut Install the propeller shaft flange onto the output shaft and install an new flange nut Tighten the flange nut to 120 N m 88 5 ft lbs CL 8105085 21 664 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 5 Stake the output shaft nut to the output shaft as follows Place the Staking Tool 9078 2 and Driver Handle C 4171 onto the output shaft 6 Rotate the Staking Tool 9078 2 until the alignment pin 3 engages the output shaft notch 4 810b9520 7 Press downward on the staking tool until the stak ing pin 3 contacts the output shaft nut flange 2 8 Strike the Driver handle C 4171 with a suitable hammer until the output shaft nut is securely staked to the output shaft 9 Install the propeller shaft Refer to 3 DIFFEREN TIAL amp DRIVELINE PROPELLER SHAFT PRO PELLER SHAFT INSTALLATION 810b94b2 LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 665 CABLE PARK LOCK REMOVAL 1 Place ignition key in the ACC 2 position 2 Remove the lower instrument panel trim as neces sary to access the park lock cable 3 Disconnect park lock cable 4 from ignition cylin der 3 pete 8111e2ba 8111cd38 21 666 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMA
163. ted to the axles e D The shift range includes all forward gears e 4 Shift range is limited to gears 1 to 4 e 3 Shift range is limited to gears 1 to 3 e 2 Shift range is limited to gears 1 to 2 e 1 Shift range is limited to the 1st gear The shift range can be adjusted to the current operating conditions by tipping the selector lever to the left hand side or the right hand side when in position D If the shift range is limited the display in the instrument cluster indicates the selected shift range and not the currently engaged gear LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 673 Tipping the shift lever will have the following results Tipping the selector lever toward one time after another The shift range is reduced in descending sequence by one gear each time i e D 4 3 2 1 If the selected limitation of the shift range would result in a downshift causing excessive engine speed the shifting is not executed and the engaged gear as well as the shift range remain unchanged This is to prevent the engine from overspeeding Engine retardation is low with the selector lever in position D To make use of the full braking power of the engine manual downshifting by tipping the lever towards the left hand side is recommended If this has been done subse quent upshifting must be carried out manually as well Tipping the selector lever toward and holding it in this position The
164. the entire hydraulic system The working pressure is regulated at the working pres sure regulating valve in relation to the load and gear All other pressures required for the transmission control are derived from the working pressure Lubrication Pressure p Sm At the working pressure regulating valve surplus oil is diverted to the lubrication pressure regulating valve from where it is used in regulated amounts to lubricate and cool the mechanical transmission components and the torque converter Furthermore the lubrication pressure p Sm is also used to limit the pressure in the torque converter Shift Pressure p S The shift pressure is determined by the shift pressure regulating solenoid valve and the shift pressure regulating valve The shift pressure e Regulates the pressure in the activating shift element during the shift phase e Determines together with the modulating pressure the pressure reduction at the deactivating shift element as regulated by the overlap regulating valve e Initializes 2nd gear in limp home mode Modulating Pressure p Mod The modulating pressure influences the size of the working pressure and determines together with the shift pressure the pressure regulated at the overlap regulating valve The modulating pressure is regulated at the modulating pres sure regulating solenoid valve which is under regulating valve pressure The modulating pressure is variable and relative to the engine load LX AU
165. the input shaft 25 to the planetary carrier 15 via the annulus gear 10 The annulus gear 11 turns at a reduced speed due to the mechanical con nection with the front planetary carrier 13 The planetary pinion gears 19 turn between the annulus gear 11 and the sun gear 23 The sun gear 23 moves at an increased speed in the running direction of the engine LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 509 Planetary Gear Set The annulus gear 10 turns at the input speed as a result of the engaged multiple disc clutch K2 9 The multiple disc clutch K3 12 transfers an increased speed to the sun gear 22 due to the connection with the sun gear 23 The planetary pinion gears 18 turn between the annulus gear 10 and the sun gear 22 The speed of the plan etary carrier 14 and the output shaft connected to the planetary carrier 5 lies between that of the annulus gear 10 and the sun gear 22 This provides a step up ratio REVERSE GEAR POWERFLOW 22255 x gt E D RAN 80e2acc9 1 TORQUE CONVERTER LOCK UP CLUTCH 2 TORQUE CONVERTER TURBINE 3 TORQUE CONVERTER IMPELLER 4 HOLDING CLUTCH B1 5 HOLDING CLUTCH B3 6 HOLDING CLUTCH B2 7 DRIVING CLUTCH K1 8 FRONT PLANETARY ANNULUS GEAR 9 DRIVING CLUTCH K2 10 CENTER PLANETARY ANNULUS GEAR 11 REAR PLANETARY ANNULUS GEAR 12 DRIVING CLUTCH K3 13 FRONT PLANETARY
166. the planetary carrier 15 The planetary carrier 15 moves at a reduced speed in the running direction of the engine LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 503 Planetary Gear Set The annulus gear 10 is driven at the same speed as the rear planetary carrier 15 as a result of a mechanical connection The sun gear 22 is held against the housing by the multiple disc holding clutch B2 6 The planetary pinion gears 18 turn on the fixed sun gear 22 and increase the torque from the annulus gear 10 to the plan etary carrier 14 The output shaft 5 connected to the planetary carrier 14 turns at a reduced speed in the run ning direction of the engine THIRD GEAR POWERFLOW A B 80e2ac9e 1 TORQUE CONVERTER LOCK UP CLUTCH 2 TORQUE CONVERTER TURBINE 3 TORQUE CONVERTER IMPELLER 4 HOLDING CLUTCH B1 5 HOLDING CLUTCH B3 6 HOLDING CLUTCH B2 7 DRIVING CLUTCH K1 8 FRONT PLANETARY ANNULUS GEAR 9 DRIVING CLUTCH K2 10 CENTER PLANETARY ANNULUS GEAR 11 REAR PLANETARY ANNULUS GEAR 12 DRIVING CLUTCH K3 13 FRONT PLANETARY CARRIER A ENGINE SPEED B TRANSMISSION INPUT SPEED Third Gear Powerflow 14 CENTER PLANETARY CARRIER 15 REAR PLANETARY CARRIER 16 TORQUE CONVERTER STATOR 17 FRONT PLANETARY PINION GEARS 18 CENTER PLANETARY PINION GEARS 19 REAR PLANETARY PINION GEARS 20 FREEWHEELI
167. the transmission starter pocket and safely relocate 8131d39e LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 535 8 Remove the bolt 2 holding the torque converter access cover 1 to the transmission 9 Remove the torque converter access cover 1 from the transmission 10 Rotate crankshaft in clockwise direction until con verter bolts 1 are accessible Then remove bolts 1 one at a time Rotate crankshaft with socket wrench on dampener bolt 11 Disconnect the gearshift cable 1 from the trans mission manual valve lever 3 12 Loosen the bolts holding the shift cable retaining strap 2 to the transmission 8131d39d 8131439 8131d39a 21 536 13 Remove the shift cable 1 from the transmission 14 Remove bolt 3 and screw 1 holding the heat shield 2 to the transmission 15 Remove the heat shield 2 from the transmission 16 Disconnect 13 pin plug connector 1 Turn bayo net lock of guide bushing 2 anti clockwise 17 Remove the 13 pin connector 1 from the transmission 18 Disconnect transmission fluid cooler lines 1 at transmission fittings 2 and clips 3 19 Disconnect the transmission vent hose from the transmission AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION _ LX 80e3b115 80e3b14f 81314399 LX
168. tinuously changing operating conditions such as load and gear change The modulating pressure regulating solenoid valve 1 has interference fit and is sealed off to the valve body of the shift plate 4 by a seal arrow The con tact springs 2 at the solenoid valve engage in a slot in the conductor tracks 3 The force of the contact springs 2 ensures secure contacts LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 679 TORQUE CONVERTER LOCKUP CLUTCH PWM SOLENOID VALVE The torque converter lockup clutch PWM solenoid valve 1 is located in the shell of the electric valve control unit and pressed against the shift plate by a spring The PWM solenoid valve 1 for the torque converter lockup controls the pressure for the torque converter lockup clutch SS The torque converter lockup PWM solenoid valve 1 AES 52505050524 is sealed off to the valve body of the shift plate 4 by an O ring 5 and seal arrow The contact springs 2 at the solenoid valve engage in a slot in the con ductor tracks 3 The force of the contact springs 2 ensures secure contacts 80e39b7c SHIFT PRESSURE CONTROL SOLENOID VALVE The shift pressure control solenoid valve 1 is located in the shell of the electric valve control unit and pressed against the shift plate by a spring Its purpose is to control the shift pressure depending on the continuousl
169. tions 21 671 SELLE e T LAO LZ LLL N 80 4338 DRIVING CLUTCH THRUST WASHER SHIM AXIAL NEEDLE BEARING RETAINING RING OUTPUT SHAFT WITH CENTER PLANETARY CARRIER 813a3972 21 672 AUTOMATIC TRANSMISSION SERVICE INFORMATION LX e Key lock Depending on the selector lever position the ignition cylinder is locked unlocked i e the ignition key be removed only if the selector lever is in position P A park lock cable is used to perform this function e Park lock The selector lever is not released from postion P until the brake pedal has been applied and the ignition key is in ACC or ON positions Shift lock is controlled by the brake light switch in conjunction with a locking solenoid in the SLA As soon as the brake pedal is applied firmly the locking solenoid is energized and retracted to unlock the selector lever If the selector lever cannot be moved out of position P due to a mal function the shift lock function can be overriden 2 Refer to 21 TRANSMISSION AUTOMATIC TRANSMIS SION NAG1 SHIFT INTERLOCK MECHANISM OPERATION e Reverse inhibitor As soon as the vehicle speed exceeds approximately 4 7 mph it is no longer possible to move the selector lever from position N to position R The reverse inhibit functiona
170. to N at tipping in on the throttle vehicle speeds greater 25mph 2 Shift system malfunction 2 Inspect shift system for proper adjustment or damage Check shifter for DTCs Repair as needed 21 532 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX CONDITION POSSIBLE CAUSES CORRECTION Reverse gear position 1 Customer shifting into R at vehicle 1 Instruct customer that R blocked engagement when speeds greater than 7mph shifter position is blocked at moving shift lever from D vehicle speeds greater than position 7mph 2 Shift system malfunction 2 Inspect shift system for proper adjustment or damage Check shifter for DTCs Repair as needed No Engine Cranking in P or 1 Gearshift cable adjustment 1 Adjust shift cable and retest N 2 Shift system malfunction 2 Check shifter DTCs Inspect shift cable and lever assembly Adjust and or replace worn damaged parts 3 Valve body malfunction 3 Starter lockout contact malfunction Remove valve body replace lead frame assembly LX AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 533 CONDITION POSSIBLE CAUSES CORRECTION Fluid Leak 1 Leak in area of bell housing 2 Leak in area of control unit valve body electrical connector 3 Leak in area of pan gasket 3 Free Wheeling Clutch F2 Defective 4 Leak in area of park guide plug 5 Leak in area of shift lever 6 Leak in area of output flange
171. ual pressure The working pressure p A is formed and travels via the 2 3 holding pressure shift valve the 2 3 command valve and the ball valve 16 to multi plate clutch K3 4 and via the 3 4 command valve 13 to the end face of the 3 4 shift pressure shift valve 14 The 3 4 shift pressure shift valve 14 is moved against the force of the spring towards the right At the same time the 3 4 solenoid valve 10 is energized This allows shift valve pressure p SV to enter the spring chamber of the shift valve B2 9 and to reach the end face of the 3 4 command valve 13 The shift valve B2 9 is held in the upper position and the 3 4 command valve 13 switches towards the right At the end face of the 3 4 shift pressure shift valve 14 the working pressure p A is replaced by shift valve pressure p SV The 3 4 command valve 13 moves to the left Working pressure p A travels via the holding pressure shift valve 12 and the 3 4 command valve 13 to the piston of multiple disc holding clutch B2 5 LX AUTOMATIC TRANSMISSION SERVICE INFORMATION 21 525 DIAGNOSIS AND TESTING AUTOMATIC TRANSMISSION CAUTION Before attempting any repair on a NAG1 automatic transmission check for Diagnostic Trouble Codes with the appropriate scan tool Transmission malfunctions may be caused by these general conditions e Poor engine performance e Improper adjustments e Hydraulic malfunctions e Mechanical malfunctions
172. ut shaft as follows Place the Staking Tool 9078 2 and Driver Handle C 4171 onto the output shaft 10 Rotate the Staking Tool 9078 2 until the align ment pin 3 engages the output shaft notch 4 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX 80e3f910 810b98bd 810b9520 LX Press downward on the staking tool 1 until the staking pin 3 contacts the output shaft nut flange 2 Strike the Driver handle C 4171 with a suitable hammer until the output shaft nut is securely staked to the output shaft Install the propeller shaft Refer to 3 DIFFEREN TIAL amp DRIVELINE PROPELLER SHAFT PRO PELLER SHAFT INSTALLATION SEAL OUTPUT SHAFT REMOVAL Remove the propeller shaft Refer to 3 DIFFERENTIAL amp DRIVELINE PROPELLER SHAFT PROPELLER 1 2 3 4 SHAFT REMOVAL Move propeller shaft to the right and tie up AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION 21 663 810b94b2 Verify that the transmission is in PARK in order to prepare for the removal of the output shaft nut Remove the nut holding the propeller shaft flange to the output shaft and remove the flange Remove the output shaft seal with suitable screw and slide hammer INSTALLATION 1 Position the new output shaft seal over the output shaft and against the transmission case Use Seal Installer 8902A 1 to install the seal Verify tha
173. ve the output shaft bearing 3 810d3b98 INSTALLATION CAUTION Verify that the geartrain end play shim is properly installed over the output shaft and against the park gear 1 Install output shaft bearing in the rear transmission housing Using Bearing Installer 9287 1 install the output shaft bearing 2 into the transmission housing The closed side of the plastic cage must point towards the parking lock gear 810b94fe 21 662 2 Install the retaining ring 1 Ensure that the retain ing ring is seated correctly in the groove 3 Check that there is no play between the bearing and the retaining ring using feeler gauge 4 There must be no play between the retaining ring and the bearing If the ring cannot be installed a thinner ring must be used If there is play between the ring and the bearing a thicker ring must be installed Retaining rings are available thick nesses of 2 0 mm 0 079 in 2 1 mm 0 083 in and 2 2 mm 0 087 in 5 Install the output shaft washer onto the output shaft 6 Install a new transmission rear seal into the trans mission case with Seal Installer 8902A 1 7 Verify that the transmission is in PARK in order to prepare for the installation of the output shaft nut 8 Install the propeller shaft flange onto the output shaft and install an new flange nut Tighten the flange nut to 120 N m 88 5 ft lbs 9 Stake the output shaft nut to the outp
174. when converter is fully seated 80e3aa8e If necessary temporarily secure converter with C clamp attached to the converter housing Check condition of converter driveplate Replace the plate if cracked distorted or damaged Also be sure transmission dowel pins are seated in engine block and protrude far enough to hold transmission in alignment Apply a light coating of Mopar High Temp Grease to the torque converter hub pocket in the rear pocket of the engine s crankshaft Raise transmission 3 and align the torque con verter with the drive plate and the transmission converter housing with the engine block 1 Move transmission forward Then raise lower or tilt transmission to align the converter housing with the engine block dowels Carefully work transmission forward and over engine block dowels until converter hub is seated 8131d396 in crankshaft Verify that no wires or the transmission vent hose have become trapped between the engine block and the transmission 15 Install two bolts 2 to attach the transmission to the engine 20 21 554 AUTOMATIC TRANSMISSION NAG1 SERVICE INFORMATION LX Install remaining torque converter housing to engine bolts 2 Tighten to 39 N m 29 ft lbs Install rear transmission crossmember 1 Tighten crossmember to frame bolts to 68 N m 50 ft Ibs Install rear support 3 to transmiss
175. ws hydraulic flow when no current or voltage is applied to the solenoid The normally closed solenoid valve is defined as a valve which does not allow hydraulic flow when no current or voltage is applied to the solenoid These valves perform hydraulic con trol functions for the transmission and must therefore be durable and tolerant of dirt particles For these reasons the valves have hardened steel poppets and ball valves The solenoids operate the valves directly which means that the solenoids must have very high outputs to close the valves against the sizable flow areas and line pressures found in current transmissions Fast response time is also necessary to ensure accurate control of the transmission The strength of the magnetic field is the primary force that determines the speed of operation in a particular sole noid design A stronger magnetic field will cause the plunger to move at a greater speed than a weaker one There are basically two ways to increase the force of the magnetic field 1 Increase the amount of current applied to the coil or 2 Increase the number of turns of wire in the coil The most common practice is to increase the number of turns by using thin wire that can completely fill the available space within the solenoid housing The strength of the spring and the length of the plunger also contribute to the response speed possible by a particular solenoid design A solenoid can also be described by the method by which it
176. y changing operating conditions such as load and gear change The shift pressure regulating solenoid valve 1 has an interference fit and is sealed off to the valve body of the shift plate 4 by a seal arrow The contact springs 2 at the solenoid valve engage in a slot in the conductor tracks 3 The force of the contact springs 2 ensures secure contacts 80e39af5 OPERATION When an electrical current is applied to the solenoid coil a magnetic field is created which produces an attraction to the plunger causing the plunger to move and work against the spring pressure and the load applied by the fluid the valve is controlling The plunger is normally directly attached to the valve which it is to operate When the cur rent is removed from the coil the attraction is removed and the plunger will return to its original position due to spring pressure 21 680 AUTOMATIC TRANSMISSION SERVICE INFORMATION LX The plunger is made of a conductive material and accomplishes this movement by providing a path for the magnetic field to flow By keeping the air gap between the plunger and the coil to the minimum necessary to allow free move ment of the plunger the magnetic field is maximized UPSHIFT DOWNSHIFT SOLENOID VALVES If a solenoid valve 1 is actuated by the TCM it opens and guides the control pressure p SV to the assigned command valve The s

AUTOMATIC TRANSMISSION NAG1 - SERVICE

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