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1. LEIAO078E Perform the final tightening of the nuts and bolts for the links rubber bushing under unladen condition unladen condition means that the fuel tank engine coolant and lubricants are at the full specification and the spare tire jack hand tools and mats are in their designated positions with the tires on level ground Check the wheel alignment Refer to RSU 6 Wheel Alignment Inspection Revision March 2010 RSU 14 2008 QX56 SHOCK ABSORBER REMOVAL AND INSTALLATION SHOCK ABSORBER Removal and Installation ANESEC REMOVAL 1 Remove the wheel and tire assembly using power tool Refer to WT 48 Rotation 2 Use CONSULT III EXHAUST SOLENOID active test to release the air pressure from the rear load level ing air suspension system 3 Remove the four clips and remove the rear fender protector front 4 Disconnect the rear load leveling air suspension hose from the shock absorber To disconnect the hose push in on the lock ring using a suit able tool and pull the air hose out LEIAO081E 5 Remove the shock absorber upper and lower end bolts using power tool 6 Remove the shock absorber CAUTION Do not damage the rubber boot on the shock absorber absorber 2 Upper end bolt Shock SOM absorber lower end bolt LEIAO082bE INSTALLATION Installation is in the reverse order of removal Tighten the shock absorber bolts to specification Refer to RSU 9 Component
2. Lines parallel to center line of body amp gt Total toe in A B Front SFA234AC Minimum 0 mm 0 in Nominal 3 3 mm 0 130 in Distance A B Maximum 6 6 mm 0 260 in Cross toe 2 mm 0 079 in Toe in Minimum 0 0 0 Angle left right Nominal 0 7 0 11 Degree minute decimal degree Maximum 0 14 0 22 Cross toe 0 8 0 14 Ball Joint A es Oo SFA858A INFOID 0000000001534651 Swinging force measurement point cotter pin hole of ball stud A 11 4 145 5 N 1 16 14 8 kg 2 56 32 7 Ib Turning torque B 0 5 6 4 N m 0 06 0 65 kg m 5 56 in Ib Vertical end play C Revision March 2010 RSU 28 0 mm 0 in 2008 QX56 SERVICE DATA AND SPECIFICATIONS SDS SERVICE DATA AND SPECIFICATIONS SDS Wheelarch Height Unladen INFOID 0000000004918900 Unit mm in Front Hf LEIAO085E Suspension type Air leveling Applied model 2WD 4WD Front wheelarch height Hf Eon Sep Rear wheelarch height Hr ig ee 1 Fuel engine coolant and engine oil full Spare tire jack hand tools and mats in designated positions 2 Verify the vehicle height If vehicle height is not within 10 mm 0 39 in of the specification perform the control unit initialization pro cedure Refer to SCS 7 CONSULT III Function Revision March 2010 RSU 29 2008 QX56
3. tool N z Rear load leveling air 6 Remove the brake caliper without disconnecting the brake hoses using power tool Reposition the brake caliper out of the compressor way using a suitable wire Refer to BR 36 Removal and Instal lation of Brake Caliper and Disc Rotor CAUTION LEIAQO74E Do not crimp or stretch the brake hose when reposition ing the brake caliper out of the way Do not press brake pedal while the brake caliper is removed 7 Remove the spare tire 8 Remove both lower shock bolts 9 Disconnect the two rear ABS sensor electrical connectors 10 Remove the two rear drive shafts Refer to RAX 10 Removal and Installation 11 Remove the rear final drive Refer to DLN 248 Removal and Installation 12 Remove the EVAP canister bolt from the top of the rear suspension member 13 Disconnect the parking brake cables from the brackets on the rear suspension member 14 Disconnect parking brake cables at equalizer Refer to PB 7 Removal and Installation 15 Set a suitable jack to support each of the rear lower links and the coil spring tension Rear lower link LEIAO077E 16 Remove both of the rear lower link outer bolts and lower the jack to remove the rear coil springs 17 Remove the two bolts to disconnect the seat belt latch anchor from the rear suspension member do M 18 Disconnect both of the connecting rods from the front lower link member 19 Set a
4. INFOID 0000000001534667 Check all of the component mountings for any excessive looseness or back lash Check the components for any excessive wear damage or abnormal conditions Repair or replace the components as necessary SHOCK ABSORBER INSPECTION Check the shock absorbers for any air leaks or damage and replace as necessary Check the hoses for any air leaks or damage and replace as necessary Wheel Alignment Inspection INFOID 0000000001534568 Rear Wheel Alignment Adjusting Bolts WEIA0102E 1 Rear lower link adjusting bolt LH 2 Front lower link adjusting bolt LH 3 Front lower link adjusting bolt RH 4 Rearlower link adjusting bolt RH PRELIMINARY INSPECTION WARNING Always adjust the alignment with the vehicle on a flat surface Use CONSULT III EXHAUST SOLE NOID active test to release the air pressure from the rear load leveling air suspension system NOTE If alignment is out of specification inspect and replace any damaged or worn rear suspension parts before making any adjustments 1 Check and adjust the wheel alignment with the vehicle under unladen conditions Unladen conditions means that the fuel coolant and lubricant are full and that the spare tire jack hand tools and mats are in their designated positions 2 Check the tires for incorrect air pressure and excessive wear Check the wheels for runout and damage Refer to WT 45 Inspection 4 Check the wheel bearing axi
5. 7E 6 Loosen the rear lower link adjusting bolt and nut connected to i i JA the rear suspension member using power tool ym E Gell a Bus Rear lower link LEIAO009E 7 Remove the rear lower link bolt and nut from the knuckle using power tool Rear lower link Suitable jack LEIAO077E Revision March 2010 RSU 20 2008 QX56 REAR LOWER LINK amp COIL SPRING lt REMOVAL AND INSTALLATION gt 8 Slowly lower the suitable jack to release the coil spring tension Then remove the upper rubber seat coil spring and lower rubber seat from the rear lower link 9 Remove the rear lower link adjusting bolt and nut from the rear suspension member using power tool then remove the rear Sr de lower link Adjusting bolt Rear lower link LEIAO009E INSPECTION AFTER REMOVAL Check the coil spring and rubber seats for deformation cracks or other damage and replace if necessary INSTALLATION Installation is in the reverse order of removal Tighten the nuts and bolts to specification Refer to RSU 9 Component When installing the upper and lower rubber seats for the rear coil springs the arrow embossed on the rubber seats must point out toward the wheel and tire assembly After installing the rear lower link and coil spring check the wheel alignment and adjust if necessary Refer to RSU 6 Wheel Align ment Inspection RSU LEIA0076E Revision March 2010 RSU 21 2008 QX56 STABILIZER BAR lt REMO
6. AL AND INSTALLATION CONTROL UNIT Removal and Installation INFOID 0000000004800764 REMOVAL 1 Remove the rear LH interior trim panel Refer to INT 14 Removal and Installation 2 Disconnect the battery negative terminal 3 Disconnect the suspension control unit electrical connector 4 Remove the two bolts and remove the suspension control unit Suspension control unit LEIAO100E INSTALLATION Installation is in the reverse order of removal Suspension control unit bolts 6 N m 0 6 kg m 53 in Ib Initialization Procedure EE 1 If control unit has been replaced proceed to step 2 If control unit has not been replaced use CONSULT III CLEAR HEIGHT INI work support function to clear initialization flag and value The CK SUSP warning lamp should illuminate Using CONSULT III EXHAUST SOLENOID active test release the air pressure from the rear load leveling air suspension system 2 Roll vehicle forward and backward Use CONSULT III ADJUST HEIGHT INI work support function to set initialization condition 4 Confirm that CK SUSP warning lamp is OFF e Revision March 2010 RSU 25 2008 QX56 HEIGHT SENSOR lt REMOVAL AND INSTALLATION gt HEIGHT SENSOR Removal and Installation Ae Rear Load Leveling Air Suspension System SEC 432 175 18 129 AWEIA0054GB 1 Rear load leveling air suspension 2 Shock absorber RH 3 Height sensor hose RH 4 Rear load leveling air suspensi
7. Alignment 1 When displaying the alignment settings many alignment machines use indicators Green red plus or minus Go No Go Do NOT use these indicators The alignment specifications programmed into your alignment machine that operate these indicators may not be correct This may result in an ERROR 2 Some newer alignment machines are equipped with an optional Rolling Compensation method to com pensate the sensors alignment targets or head units Do NOT use this Rolling Compensation method Use the Jacking Compensation method After installing the alignment targets or head units raise the vehicle and rotate the wheels 1 2 turn both ways See Instructions in the alignment machine you are using for more information CAMBER 1 Measure camber of both the right and left wheels with a suitable alignment gauge and adjust as necessary to specification Attachment Camber Refer to RSU 28 Wheel Alignment Alignment SRAO096A 2 If outside of the specified value adjust the camber using the adjusting bolt in the front lower link CAUTION After adjusting the camber then check the toe in NOTE Camber changes about 0 5 with each graduation of the adjust ing bolt 3 Tighten the adjusting bolt nuts to specification Front lower link LEIAO041E TOE IN 1 Bounce the rear of the vehicle up and down two to three times to stabilize the vehicle height Refer to RSU 29 Wheelarch Height Unla
8. D INSTALLATION gt 1 Seat belt latch anchor 2 Stabilizer bar bushing 3 Stabilizer bar clamp 4 Stabilizer bar 5 Connecting rod 6 Front lower link 7 Knuckle 8 Bushing 9 Rear lower link 10 Shock absorber 11 Suspension arm 12 Lower rubber seat 13 Coil spring 14 Upper rubber seat 15 Rear suspension member 16 Spare tire bracket 17 Bound bumper lt Front Rear Load Leveling Air Suspension System SEC 432 AWEIA0054GB 1 Rear load leveling air suspension 2 Shock absorber RH 3 Height sensor hose RH 4 Rear load leveling air suspension 5 Shock absorber LH 6 Rear load leveling air suspension hose LH compressor assembly includes the bracket and rubber cover lt Front REMOVAL 1 Use the CONSULT III EXHAUST SOLENOID active test to release the air pressure from the rear load leveling air suspension system 2 Disconnect the electrical connectors for the height sensor and the rear load leveling air suspension com pressor assembly 3 Unclip the rubber cover to access the rear load leveling air suspension compressor assembly Revision March 2010 RSU 12 2008 QX56 REAR SUSPENSION MEMBER REMOVAL AND INSTALLATION gt 4 Disconnect the rear load leveling air suspension hoses at the rear load leveling air suspension compressor assembly To disconnect the hoses push in on the lock ring using a suit able tool and pull the hose out 5 Remove both of the rear wheel and tire assemblies using power
9. INSPECTION AFTER INSTALLATION Check the shock absorber for any air leaks or damage to the rubber boot Check the shock absorber for smooth operation through a full stroke both compression and extension Check piston rod for cracks deformation or other damage and replace if necessary Revision March 2010 RSU 15 2008 QX56 SUSPENSION ARM REMOVAL AND INSTALLATION SUSPENSION ARM Removal and Installation estate REMOVAL 1 6 Remove the rear suspension member assembly using power tool Refer to RSU 11 Removal and Instal lation NOTE Itis necessary to remove the rear suspension member to remove the front upper bolt from the suspension arm Remove the shock absorber upper end bolt Remove the suspension arm upper nuts and bolts on the sus EN pension member side using power tool Sd lom Front Shock XV TT D fe ca ie D Shock absorber lower end bolt LEIA0082E Remove the suspension arm pinch bolt and nut on the knuckle Suspension side using power tool arm pinch Disconnect the suspension arm from the knuckle using a soft bo t and nut hammer CAUTION Do not damage the ball joint with the soft hammer Remove the suspension arm LEIAO087E INSPECTION AFTER REMOVAL Check the suspension arm for damage cracks deformation and replace if necessary Check the rubber bushing for damage cracks and deformation Replace suspension arm assembly if neces sary Be
10. J 255 26 188 8 3 0 85 73 J22 2 2 16 MP Dies 26 188 i S 185 19 136 88 9 65 V 34 3 5 25 175 18 129 AWEIA0164GB Revision March 2010 RSU 9 2008 QX56 REAR SUSPENSION ASSEMBLY ON VEHICLE REPAIR 1 Seat belt latch anchor 2 Stabilizer bar bushing 3 Stabilizer bar clamp 4 Stabilizer bar 5 Connecting rod 6 Front lower link 7 Knuckle 8 Bushing 9 Rear lower link 10 Shock absorber 11 Suspension arm 12 Lower rubber seat 13 Coil spring 14 Upper rubber seat 15 Rear suspension member 16 Spare tire bracket 17 Bound bumper lt Front Rear Load Leveling Air Suspension System SEC 432 AWEIA0054GB 1 Rear load leveling air suspension 2 Shock absorber RH 3 Height sensor hose RH 4 Rear load leveling air suspension 5 Shock absorber LH 6 Rear load leveling air suspension hose LH compressor assembly lt Front Revision March 2010 RSU 10 2008 QX56 REAR SUSPENSION MEMBER REMOVAL AND INSTALLATION gt REMOVAL AND INSTALLATION REAR SUSPENSION MEMBER Removal and Installation INFOID 0000000004900757 Rear Suspension SEC 431 e 432 Co PJ 255 26 188 8 3 0 85 73 1 2 2 i PJ255 26 188 Ai 8 B 185 19 136 88 9 65 gt Ai 95 9 7 70 Ge 34 3 5 25 el S Ay 4 19 175 18 129 28 AWEIA0164GB Revision March 2010 RSU 11 2008 QX56 REAR SUSPENSION MEMBER lt REMOVAL AN
11. SUSPENSION sccron FRO US REAR SUSPENSION CONTENTS PRECAUTION errem nnn 2 SHOCK ABSORBER nnne 15 Removal and Installation 15 PRECAUTIONS ENK KKK nennen nnn 2 Precaution for Supplemental Restraint System SUSPENSION ARM eseeuueus 16 SRS AIR BAG and SEAT BELT PRE TEN Removal and Installation 16 SIONER zio nct rs EE 2 Precaution Necessary for Steering Wheel Rota FRONT LOWER LINK e 18 tion After Battery Disconnect s 2 Removal and Installation 18 Precaution for Rear Suspension 3 REAR LOWER LINK amp COIL SPRING 20 PREPARATION cene 4 Removal and Installation 20 PRERPARATION tnn 4 STABILIZER BAR eene 22 Commercial cerita TOON s a Aane At 4 Removal and Installation 22 REAR LOAD LEVELING AIR SUSPENSION SE 3 COMPRESSOR ASSEMBLY 23 NOISE VIBRATION AND HARSHNESS Removal and Installation 23 NVH TROUBLESHOOTING 5 NVH Troubleshooting Chart sessusssse 5 is UNI x c up y ad B emowval and Installation esse 25 ON VEHICLE MAINTENANCE 6 Initialization Procedure ssssses 25 REAR S
12. USPENSION ASSEMBLY 6 HEIGHT SENSOR Ee 26 On Vehicle Inspection and Service 6 Removal and Installation 26 Wheel Alignment Inspection ANERE ES AEN AE 6 SERVICE DATA AND SPECIFICATIONS ON VEHICLE REPAIR ern 9 SDS E 28 REAR SUSPENSION ASSEMBLY 9 SERVICE DATA AND SPECIFICATIONS COMPONGH eom ee den Qi SDS user teret repente ee 28 Wheel Alignment seen 28 REMOVAL AND INSTALLATION 11 EE E 28 x1 REAR SUSPENSION MEMBER n Wheelarch Height Unladen 29 Removal and Installation esses 11 Revision March 2010 RSU 1 2008 QX56 PRECAUTIONS lt PRECAUTION gt PRECAUTION PRECAUTIONS Precaution for Supplemental Restraint System SRS AIR BAG and SEAT BELT P R E TE N S O N E R INFOID 0000000004900767 The Supplemental Restraint System such as AIR BAG and SEAT BELT PRE TENSIONER used along with a front seat belt helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision This system includes seat belt switch inputs and dual stage front air bag modules The SRS system uses the seat belt switches to determine the front air bag deployment and may only deploy one front air bag depending on the severity of a collision and whether the front occ
13. VAL AND INSTALLATION gt STABILIZER BAR Removal and Installation INFOID 0000000004900762 REMOVAL 1 Disconnect the stabilizer bar ends from the connecting rods using power tool Stabilizer Connecting rod LEIAO088E 2 Remove the stabilizer bar clamps using power tool and remove the stabilizer bar bushings Stabilizer T bar 3 Remove the stabilizer bar bushing Stabilizer bar clamp LEIAO089E INSPECTION AFTER REMOVAL Check the stabilizer bar for any deformation cracks or damage and replace if necessary Check the rubber bushings for deterioration or cracks and replace if necessary INSTALLATION Installation is in the reverse order of removal Tighten the nuts and bolts to specification Refer to RSU 9 Component Install the stabilizer bar with the ball joint sockets properly aligned Install the stabilizer bar bushing and clamp so they are positioned inside of the sideslip prevention clamp on the stabilizer bar SFA449BB Revision March 2010 RSU 22 2008 QX56 REAR LOAD LEVELING AIR SUSPENSION COMPRESSOR ASSEMBLY lt REMOVAL AND INSTALLATION gt REAR LOAD LEVELING AIR SUSPENSION COMPRESSOR ASSEMBLY Removal and Installation WEE Rear Load Leveling Air Suspension System SEC 432 175 18 129 AWEIA0054GB 1 Rear load leveling air suspension 2 Shock absorber RH 3 Height sensor hose RH 4 Rear load leveling air suspension 5 Shock absorber LH 6 Rear load levelin
14. al end play Axial end play 0 mm 0 in Check the shock absorbers Refer to RSU 15 Removal and Installation Check each mounting point of the suspension components for any excessive looseness or damage Check each link arm and the rear suspension member for any damage Check the vehicle height Refer to RSU 29 Wheelarch Height Unladen 1 oN an Revision March 2010 RSU 6 2008 QX56 REAR SUSPENSION ASSEMBLY ON VEHICLE MAINTENANCE If vehicle height is not within 10 mm 0 39 in of the specification perform the control unit initialization procedure Refer to SCS 7 CONSULT III Function GENERAL INFORMATION AND RECOMMENDATIONS 1 A Four Wheel Thrust Alignment should be performed This type of alignment is recommended for any NISSAN vehicle The four wheel thrust process helps ensure that the vehicle is properly aligned and the steering wheel is centered The alignment machine itself should be capable of accepting any NISSAN vehicle The alignment machine should be checked to ensure that it is level 2 Make sure the alignment machine is properly calibrated Your alignment machine should be regularly calibrated in order to give correct information Check with the manufacturer of your specific alignment machine for their recommended Service Cali bration Schedule THE ALIGNMENT PROCESS IMPORTANT Use only the alignment specifications listed in this Service Manual Refer to RSU 28 Wheel
15. chart below to help you find the cause of the symptom If necessary repair or replace these parts HEYD bugoouse qnoJr HAN L LS ONIHJJIS x x x x x HEUD bujoouss qnoJj HAN 9 49 Sd3MVH8 x x x x Heyo BuroouseiqnoJ HAN CSV LAVHS 3AlHQ x x x Heyo BuroousejqnoJ HAN LP LM 133HM GVO x x x xX x Heyo BuroougsejqnoJ HAN IS LA SqdMIL x x x x x x Hego BurjousejgnoJ HAN 9 183 NOISNAdSNS LNO4J HEUD DuooysajqnoIL HAN S XVA JIXV LNOSJ wHeYD buroouse qnoJL HAN OCH IG TVILLN3eH3HAIG wHeYD butoouse qnoJL HAN C6L N IG LAVHS H3Tl3dOHd 97194 enBnej seq jezi iqejs x 9 NSHY jueuuuBije ai 1984102U x x 6 NSHY Ssseuesoo uoisuedsng x x onbe Buuds x x x eouejegejulSued x x x x x uonejouejyep Bununou Jo Bulusng x x x x x x P tz uonooeyep 10 eBeuiep uoneuuojep Jegiosqe yOous x x x x x x 6 NSY sseuesoo uonejeijsuiJedojdu x x x x x x D E o c t x G 5 ZS g S a LI el s 5 9 O olg SIS Sis UI oll E a os s8 cz25 5 Zin S v vV ia o Oo S ZS E g 5 8 o S o a amp c D N x Applicable 2008 QX56 RSU 5 Revision March 2010 REAR SUSPENSION ASSEMBLY ON VEHICLE MAINTENANCE ON VEHICLE MAINTENANCE REAR SUSPENSION ASSEMBLY On Vehicle Inspection and Service
16. den 2 Push the vehicle straight ahead about 5 m 16 ft Revision March 2010 RSU 7 2008 QX56 REAR SUSPENSION ASSEMBLY ON VEHICLE MAINTENANCE 3 Puta mark on the base line of the tread rear side of both of the tires at the same height as the center of the hub This will be the measuring points 4 Measure the distance A rear side across from tire to tire Hub center Base line Measuring point SFA614B 5 Push the vehicle slowly ahead to rotate the wheels 180 a half Lines parallel to turn center line of body If the wheels are rotated more than 180 a half turn then repeat the above steps Never push the vehicle backward 6 Measure the distance B front side across from tire to tire Total toe in Refer to RSU 28 Wheel Alignment SFA234AC 7 Ifthe toe in is outside the specified value adjust the toe in using the adjusting bolt in the rear lower link CAUTION Adjusting bolt Be sure to adjust equally on RH and LH sides using the ue ee T adjusting bolt T NOTE Toe changes about 1 5 mm 0 059 in one side with each grad uation of the adjusting bolt Ou 8 Tighten the adjusting bolt nuts to specification we Rear lower link LEIAO009E Revision March 2010 RSU 8 2008 QX56 REAR SUSPENSION ASSEMBLY ON VEHICLE REPAIR ON VEHICLE REPAIR REAR SUSPENSION ASSEMBLY Co m p O n e nt INFOID 0000000004900756 Rear Suspension SEC 431 432 re P
17. ear load level ing air suspension system Remove the shock absorber lower end bolt Remove stabilizer bar connecting rod from front lower link Remove stabilizer bar clamps and place bar aside Remove the adjusting bolt and nut and the bolt and nut from the front lower link and rear suspension member using power tool absorber gee end boit Dm Ft Shock absorber lower end bolt LEIAO082E 7 Remove the front lower link pinch bolt and nut on the knuckle side using power tool 8 Disconnect the front lower link from the knuckle using a soft hammer CAUTION Do not damage the ball joint with the soft hammer 9 Remove the front lower link Front lower LS link pinch nut and bolt LEIAO086E INSPECTION AFTER REMOVAL Check the front lower link and bushing for any deformation crack or damage Replace if necessary Check the rubber bushing for damage cracks and deformation Replace the front lower link and bushing if necessary Before checking turn the ball joint at least 10 revolutions so that the ball joint is properly broken in Revision March 2010 RSU 18 2008 QX56 FRONT LOWER LINK lt REMOVAL AND INSTALLATION gt Check the ball joint Replace the front lower link if any of the follow ing conditions exist Ball stud is worn Joint is hard to swing Play in axial direction is excessive rom E Swinging force A Refer to RSU 28 Ball Joint Turning force B R
18. efer to RSU 28 Ball Joint Vertical end play C Refer to RSU 28 Ball Joint SFA858A INSTALLATION Installation is in the reverse order of removal Tighten the nuts and bolts to specification Refer to RSU 9 Component Perform the final tightening of the nuts and bolts for the links rubber bushing under unladen condition RSU unladen condition means that the fuel tank engine coolant and lubricants are at the full specification and the spare tire jack hand tools and mats are in their designated positions with the tires on level ground Check the wheel alignment Refer to RSU 6 Wheel Alignment Inspection Revision March 2010 RSU 19 2008 QX56 REAR LOWER LINK amp COIL SPRING lt REMOVAL AND INSTALLATION gt REAR LOWER LINK amp COIL SPRING Removal and Installation Aeedeteregeegenen REMOVAL 1 Remove the wheel and tire assembly using power tool Refer to WT 48 Rotation 2 Use CONSULT III EXHAUST SOLENOID active test to release the air pressure from the rear load level ing air suspension system 3 For removing the LH rear lower link and coil spring remove the height sensor arm bracket bolt from the LH rear lower link 4 Remove speed sensor harness and brackets from rear lower link 5 Seta suitable jack to relieve the coil spring tension from the rear lower link WARNING Do not compress the coil spring when setting the jack Rear lower link LEIAO07
19. fore checking turn the ball joint at least 10 revolutions so that the ball joint is properly broken in Revision March 2010 RSU 16 2008 QX56 SUSPENSION ARM REMOVAL AND INSTALLATION Check the ball joint Replace the suspension arm assembly if any of the following conditions exist Ball stud is worn Joint is hard to swing Play in axial direction is excessive A es Swinging force A Refer to RSU 28 Ball Joint Turning force B Refer to RSU 28 Ball Joint Vertical end play C Refer to RSU 28 Ball Joint SFA858A INSTALLATION Installation is in the reverse order of removal Tighten the nuts and bolts to specification Refer to RSU 9 Component Perform the final tightening of the nuts and bolts for the links rubber bushing under unladen condition RSU unladen condition means that the fuel tank engine coolant and lubricants are at the full specification and the spare tire jack hand tools and mats are in their designated positions with the tires on level ground Check the wheel alignment Refer to RSU 6 Wheel Alignment Inspection Revision March 2010 RSU 17 2008 QX56 FRONT LOWER LINK lt REMOVAL AND INSTALLATION gt FRONT LOWER LINK Removal and Installation JueGie AGGER ORDRE REMOVAL 1 Remove the wheel and tire assembly using power tool 2 Use CONSULT III EXHAUST SOLENOID active test to release the air pressure from the r
20. g air suspension hose LH compressor assembly lt Front REMOVAL 1 Use CONSULT III EXHAUST SOLENOID active test to release the air pressure from the rear load level ing air suspension system 2 Disconnect the electrical connectors for the rear load leveling air suspension compressor assembly Unclip the rubber cover to access the rear load leveling air suspension compressor assembly 4 Disconnect the rear load leveling air suspension hoses at the rear load leveling air suspension compressor assembly To disconnect the hoses push in on the lock ring using a suit able tool and pull the hose out e Rear load leveling air compressor LEIAO074E Revision March 2010 RSU 23 2008 QX56 REAR LOAD LEVELING AIR SUSPENSION COMPRESSOR ASSEMBLY lt REMOVAL AND INSTALLATION gt 5 Remove the four bolts that mount the rear load leveling air sus DP Rear load pension compressor assembly to the underbody ieveli g dir suspension compressor bolts assembly N7 LEIAO090E INSTALLATION Installation is in the reverse order of removal To connect the rear load leveling air suspension hoses the lock ring must be fully seated in the fitting Insert the hose B into the lock ring A until the lock ring A is touching the hose B as shown Pull on the hose to check that it is securely inserted Hose Lock ring Touch A to B LEIAO078E Revision March 2010 RSU 24 2008 QX56 CONTROL UNIT REMOV
21. nect INFOID 0000000004900768 NOTE This Procedure is applied only to models with Intelligent Key system and NATS NISSAN ANTI THEFT SYS TEM Remove and install all control units after disconnecting both battery cables with the ignition knob in the LOCK position Always use CONSULT III to perform self diagnosis as a part of each function inspection after finishing work If DTC is detected perform trouble diagnosis according to self diagnostic results For models equipped with the Intelligent Key system and NATS an electrically controlled steering lock mech anism is adopted on the key cylinder For this reason if the battery is disconnected or if the battery is discharged the steering wheel will lock and steering wheel rotation will become impossible If steering wheel rotation is required when battery power is interrupted follow the procedure below before starting the repair operation OPERATION PROCEDURE 1 Connect both battery cables NOTE Supply power using jumper cables if battery is discharged 2 Usethe Intelligent Key or mechanical key to turn the ignition switch to the ACC position At this time the steering lock will be released 3 Disconnect both battery cables The steering lock will remain released and the steering wheel can be rotated 4 Perform the necessary repair operation Revision March 2010 RSU 2 2008 QX56 PRECAUTIONS lt PRECAUTION gt 5 When the repair work is completed retu
22. on 5 Shock absorber LH 6 Rear load leveling air suspension hose LH compressor assembly lt Front REMOVAL 1 Use CONSULT III EXHAUST SOLENOID active test to release the air pressure from the rear load level ing air suspension system 2 Disconnect the electrical connector for the height sensor 3 Remove the two height sensor bolts and height sensor arm bracket bolt 4 Remove the height sensor arm bracket bolt LEIAO080E INSTALLATION Installation is in the reverse order of removal Revision March 2010 RSU 26 2008 QX56 HEIGHT SENSOR lt REMOVAL AND INSTALLATION gt 1 2 3 4 SULT III Function Start the engine Use CONSULT III to perform STANDARD HEIGHT LEVEL work support function Using data monitor of CONSULT III verify HEIGT CALC is at 0 mm Check the vehicle height Refer to RSU 29 Wheelarch Height Unladen If vehicle height is not within 10 mm 0 0 39 in of the specification perform the initialization procedure Refer to SCS 7 CON Revision March 2010 RSU 27 2008 QX56 SERVICE DATA AND SPECIFICATIONS SDS SERVICE DATA AND SPECIFICATIONS SDS SERVICE DATA AND SPECIFICATIONS SDS SERVICE DATA AND SPECIFICATIONS SDS Wheel Alignment INFOID 0000000001534650 Minimum 0 0 0 Camber Nominal 0 30 0 5 Degree minute decimal degree Maximum 1 0 1 0 Cross camber 0 45 0 75
23. rn the ignition switch to the LOCK position before connecting the battery cables At this time the steering lock mechanism will engage 6 Perform a self diagnosis check of all control units using CONSULT III Precaution for Rear Suspension INFOID 0000000001534647 When installing the rubber bushings the final tightening must be done under unladen condition and with the tires on level ground Oil will shorten the life of the rubber bushings so wipe off any spilled oil immediately Unladen condition means the fuel tank engine coolant and lubricants are at the full specification The spare tire jack hand tools and mats are in their designated positions After installing suspension components check the wheel alignment Caulking nuts are not reusable Always use new caulking nuts for installation New caulking nuts are pre oiled do not apply any additional lubrication Revision March 2010 RSU 3 2008 QX56 PREPARATION lt PREPARATION gt PREPARATION PREPARATION Commercial Service Tool INFOID 0000000001534648 Tool name Description Power tool Removing wheel nuts Removing brake caliper assembly Removing rear suspension component parts PBICO190E Revision March 2010 RSU 4 2008 QX56 NOISE VIBRATION AND HARSHNESS NVH TROUBLESHOOTING SYMPTOM DIAGNOSIS gt SYMPTOM DIAGNOSIS NOISE VIBRATION AND HARSHNESS NVH TROUBLESHOOTING NVH Troubleshooting Chart INFOID 0000000001534649 Use
24. suitable jack under the rear suspension member 20 Remove the six rear suspension member bolts 21 Slowly lower the jack to remove the rear suspension member suspension arm front and rear lower links and stabilizer bar as an assembly 22 If necessary remove the suspension arm spare tire bracket height sensor rear load leveling air suspension hoses stabilizer ENUE bar knuckle and front and rear lower links from the rear sus pension member INSPECTION AFTER REMOVAL Check the rear suspension member for deformation cracks and other damage and replace if necessary INSTALLATION Installation is in the reverse order of removal Revision March 2010 RSU 13 2008 QX56 REAR SUSPENSION MEMBER lt REMOVAL AND INSTALLATION gt When raising the rear suspension member assembly use the locating pins to align the rear suspension member to the vehicle body Rear suspension member locating pin LEIAO083E When installing the upper and lower rubber seats for the rear coil springs the arrow embossed on the rubber seats must point out toward the wheel and tire assembly ee Rubber seat A Hose Lock ring LEIAO076E To connect the rear load leveling air suspension hoses the lock ring must be fully seated in the fitting Insert the hose B into the lock ring A until the lock ring A is touching the hose B as shown Pull on the hose to check that it is securely inserted B Touch A to B
25. upants are belted or unbelted Information necessary to service the system safely is included in the SR and SB section of this Service Man ual WARNING To avoid rendering the SRS inoperative which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation all maintenance must be performed by an authorized NISSAN INFINITI dealer Improper maintenance including incorrect removal and installation of the SRS can lead to personal injury caused by unintentional activation of the system For removal of Spiral Cable and Air Bag Module see the SR section Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual SRS wiring harnesses can be identified by yellow and or orange harnesses or har ness connectors PRECAUTIONS WHEN USING POWER TOOLS AIR OR ELECTRIC AND HAMMERS WARNING When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni tion ON or engine running DO NOT use air or electric power tools or strike near the sensor s with a hammer Heavy vibration could activate the sensor s and deploy the air bag s possibly causing serious injury When using air or electric power tools or hammers always switch the Ignition OFF disconnect the battery and wait at least 3 minutes before performing any service Precaution Necessary for Steering Wheel Rotation After Battery Discon

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