LeeBoy Sauer Electric Steer M42 Pumps Service Manual 2005
Contents
1. A Series 42 x1 Fast E Control Response Time x2 Medium L 1 Rotation R CW x3 Slow Bim 28 28 1 71 in F Port Style SAE Threaded O Ring Boss 41 41 2 50 in PEN NE N None ee Ig 2 3 Loop Flushing Cooling Shuttle C 13T 16 32P Spline 00 9 9 D 15 16 32P Spline N None Ext Charge Supply C Input Shaft Configurations E 19T 16 32P Spline Filtration A Suction No Adapter Plate G 1 000 Straight Keyed C Remote Pressure Partial Flow 1 000 in O D Tapered 1 5 in ft G Suction Adapter Plate N None N None A MDC Linear Low Force G 1 Charge Pump 2 11 cm rev 0 67 in rev C Non Linear Low Force C 14 bar 205 psi D 1 Contro Type E EDC Electric Displacmt Contrl Charge Relief Setting i4 Dar 205 F 20 bar 280 psi FNR 3 Pos Forwrd Neut Revrs G NFP Non Feedback Proport l Special Drive Features N None or Not Applicable g 1 NSS Weatherpack for MDC eek T or PCP Style for EDC Rear Auxilliary Mounting Pad NSS for MDC or 12V Electric for NFP B 13 Tooth 2 or PCP for EDC 2 12 V DIN for FNR T SAE A Special 11 Tooth or Connector for FNR 3 NSS BAS CW Handle Rot NN Check Valve only No HPRV or Style for NFP Weatherpack for MDC z 14 140 bar 2030 psi or H2. Adjustments and Minor Repairs CW CCW P100110 E Determining Charge Pump Orientation Looking Inside of Gerotor Pump Cover SAUER G SUNDSTRAND Series 42 Adjustments and Minor Repairs Units without Integral Charge Pump Variable Pumps without an integral charge pump do Screw used with not have a gerotor assembly gerotor drive pin or No Pad and gerotor cover locating pin installed The charge pump A Pad Only inlet port is plugged with an O ring plug Cover Retaining For these units that are equipped with housings without filtration adapters the gerotor cavity outlet is plugged with a special plug installed in a housing passage The 3 4 16 charge inlet fitting should be torqued to 68 Nm 50 ftelbf Forthese units that are equipped with housings that include filtration adapters the gerotor cavity outlet is plugged with an O ring plug installed in the To Filter port of a Full Filter Flow charge relief valve after filter filter adapter The 7 8 14 charge inlet fitting should be torqued to 95 Nm 70 ftelbf CAUTION A Partial Filter Flow charge relief valve be fore filter adapter must not be used on variable Charge Pump Cover or Auxiliary Pad Gasket pumps without an integral charge pump If this design adapter is used the charge relief valve Gero will be defeated Cover Charge Pump C Locati Drive Coupling No Charge Pump Componen
3. O Rin Defeat Spool a Ls Eo Loop Flushing Spool Assembly a E100018 E Loop Flushing Valve and Loop Flushing Defeat Components 21 SAUER G SUNDSTRAND 4 13 Shaft Seal and Shaft Replacement Series 42 A lip type shaft seal is used in Series 42 pumps This seal and or the shaft can be replaced without major disassembly of the unit Replacement generally re quires removal of the pump from the machine 1 22 Position the pump with the shaft facing up NOTE If the unit is positioned horizontally when the shaft is removed the cylinder block could move out of place making shaft installation diffi cult Remove the retaining ring from the housing Pull out seal carrier assembly Remove the O ring from the seal carrier To install a new shaft only proceed to step 8 Place the seal carrier in an arbor press with the shaft bearing side down and press out the old seal An appropriately sized pipe spacer or socket wrench can be used as a press tool Once re moved the seal is not reusable Inspect the seal carrier and the new seal for damage Inspect the sealing area on the shaft for rust wear or contamination Polish the sealing area on the shaft if necessary Press the new seal into the shaft bearing side of the seal carrier The seal lip must face the outside of the pump Be careful not to damage the seal The outside diameter of the seal may be coated with a sealant
4. No Pad and A Pad Only Cover Retaining Screws Charge Pump Cover or Auxiliary Pad Geroter Cover Geroter lt Assembly Drive Coupling d Geroter Drive Pin Geroter Cover Locating Pin Charge Pump Cover Locating Pin Charge Pump Components Charge Pump Cover Locating Pin E100023 E Charge Pump Components 25 SAUER G SUNDSTRAND Series 42 11 12 13 14 15 For Install the gerotor cover locating pin into the pump housing Install the gerotor cover assembly over the gerotor The locating pin must engage the slot in the gerotor cover NOTE The charge pump rotation is determined by the location of the gerotor recess and pressure balance hole in the gerotor cover Different gerotor covers are used for clockwise and counterclockwise rotation pumps Install new pressure balance O rings onto the gerotor cover and retain with petroleum jelly or grease An additional O ring was used on the gerotor cover of very early production pumps with the SAE A pad option Install the charge pump cover locating pins anda new charge pump cover gasket Install the charge pump cover The cover must engage the gerotor cover and the locating pins Install the charge pump cover screws and torque evenly 36 43 Nm 26 32 ftelbf If necessary reinstall auxiliary pump units without an integral charge pump see the next section 26 continued
5. On the underside of the MDC module clamp a pair of locking pliers around the spring contacts of the control cam The pliers should hold the nub on the control cam to the pin underneath This will hold the control cam in neutral position Screw control nut on cam 4 1 6 8 Nm 3 5 ftelbf Press new cover on top of cam cavity This requires either an arbor press or a full sized punch punch depth 1 06 mm 0 0417 in punch width 23 3 mm 0 916 in Remove the alignmenttool andthe locking pliers Place a new lubricated O ring on NSS Reconnect the NSS 25 29 Nm 18 22 ftslbf to the MDC Reinstall MDC module onto pump housing refer to section 4 4 Adjustments and Minor Repairs NSS Cover NSS Control Nut NSS Cam P100109 E Side View of NSS and NSS Cavity F100202 Underside of MDC Module Showing Where to Clamp Locking Pliers SAUER G SUNDSTRAND Series 42 4 8 MDC Solenoid Override Valve The solenoid override valve is a safety feature that connects both ends of the servo control piston to gether when the solenoid is de energized Thus the pump can be put into stroke only when the solenoid is energized The solenoid override with brake release includes hydraulic control of a safety brake When de ener gized a spring applied hydraulically released brake is drained through port X7 For conditions where case back pressure on the spring applied brake is critical an external drain to the reservoi
6. e g Loctite High Performance Sealant 59231 prior to installation This aids in preventing leaks caused by damage to the seal bore in the seal carrier continued Adjustments and Minor Repairs Retaining Ring Seal Carrier Assembly E100019 E Shaft Seal Components O Ring Sealant may be used on outside diameter Seal Inside Lip Seal Carrier face down Press Seal to bottom of Seal Carrier E100020 E Installation of Shaft Seal SAUER G SUNDSTRAND Series 42 14 If the shaft is not being replaced proceed to step 11 Remove the shaft and roller bearing assembly from the pump or motor The bearing assembly can be transferred to the new shaft steps 9 and 10 Remove the retaining ring that secures roller bearing assembly with a snap ring plier Remove the roller bearing assembly Place roller bearing assembly on new shaft and secure with the retaining ring Wrap the spline or key end of shaft with thin plastic to prevent damage to the seal lip during installation Lubricate the inside diameter of the shaft seal with petroleum jelly Place the O ring onto the shaft bearing and lubricate with petroleum jelly Slidethe seal carrier assembly over the shaft and into the housing bore Press against O ring Hold inward pressure against the shaft to compress the cylinder block spring while pressing the seal carrier into place Install the retaining ri
7. section Auxiliary Note If the charge pump components come out Mounting with the charge pump cover refer to section 4 15 oso Pad B on how to properly reinstall them No Charge Pini Install a new charge pump cover gasket Charge Pump Components Install the charge pump cover auxiliary pump mounting pad is integrated in cover NOTE The threaded screw holes in the auxiliary pump mounting pad used on very early produc tionpumps with the SAE A pad option are drilled through into the area between the gerotor cover and charge pump cover Any of these holes which are not used to attach the flange cover or auxiliary pump should be plugged with internal hex set screws installed hand tight to prevent the entrance of water or dirt into this area E100022 E Auxiliary Pad Options and Components 6 Attach the auxiliary pump If no pump is to be attached on an auxiliary mounting pad the pad should be protected with a flange cover and O ring to prevent leakage 24 SAUER G SUNDSTRAND Series 42 4 15 Charge Pump The charge pump may be disassembled to inspect and clean or to change the auxiliary shaft drive coupling Note For units without integral charge pumps see the last page of this section for additional information Remove auxiliary pump if necessary Remove the screws retaining the charge pump cover to the pump housing Torx T45 seven 7 screws are used with the no pad or SAE A aux
8. 42 ftelbf aligning the marks made at disassembly Check and adjust if necessary the charge pres sure For screw adjustable anti stall charge relief valves an approximate rule of thumb is 2 8 bar quarter turn 40 psi quarter turn To confirm the charge relief valve setting mea sure charge pressure port M3 with the pump in stroke The charge pressure should level off when the relief setting is reached Adjustments and Minor Repairs Charge Relief Lock Nut O Ring Screw Adjustable Charge Relief Valve Plug Spring Poppet E100017 E Screw Adjustable Charge Relief Valve Components Approximate Relief Setting vs Screw Revolution 2 8 bar 1 4 turn 40 psi 1 4 turn 20 SAUER G SUNDSTRAND Series 42 4 12 Loop Flushing Valve The loop flushing function consists of the loop flush ing shuttle valve and the loop flushing relief valve The assemblies may be removed for cleaning and instal lation of new O rings The relief valve poppet may be exchanged for one with a different flow rating but the relief valve shims should not be changed out unless specifically instructed so by Sauer Sundstrand The function also can be defeated Loop Flushing Valve 1 Remove the loop flushing valve plug from the pump housing 11 16 in Hex Remove the O ring from the plug Remove the loop flushing valve spool assembly from the housing Inspect the parts for damage or foreign material Thecentering sp
9. Sundstrand Company All rights reserved Contents subject to change Printed in U S A SAUER G SUNDSTRAND Series 42 Introduction Contents MEC me TR 2 14 Using Tits Manual ntur t toit bee 2 1 25 Safety Precautloris iste eodeni EE En eta eee op etel us 2 2 i Colo IIE eolo Ret RR 4 3 Component and Port Locations cott erii ett edi cb ini ee sd 5 3 1 Component Locations ier a Ce dE a de ER Puck de eae oe ps De tu 5 3 2 Ports and Pressure Gauges iii 6 4 Adjustment and Minor Repair Instructions ns 8 41 Size and Torque for Plugs and Fittings sisi 8 42 Pump Neytral Adjustment nian anc aA e e e dien eniin 9 4 3 Control Neutral Adjustment for MDC EDC Controls sss 10 44 MDC Control Module tuoi He P tite fe Pe e teks e EN HER Mera 11 45 EDG Control Module ccce denk dee get ele Der Uta Dra dain ae erac eve una 12 46 MDC EDC Control Spool Control Linkage and Control Neutral Adjustment Screw 13 4 7 Neutral Start Backup Alarm Switch sise 14 4 8 MDC Solenoid Override Valve ie 16 4 9 NFPE and NFPH Controls nne 17 4 10 System Check Relief Valves High Pressure Relief Charge Check amp Bypass Valves 18 4 11 Charge Relief Valve iii 19 4 12 Loop Flushing Valve o eee ee tt a RE Poe i oe e RR Eig 21 4 13 Shaft S
10. position of the adjust ment screw Turn the screw counterclockwise until the other gauge registers an increase in pressure on the servo piston Note the position of the adjustment Screw 6 Turn the adjustment screw clockwise to a posi tion halfway between the positions noted above The servo piston pressure gauges should indi cate nearly equal pressures 7 While holding the adjustment screw in position torque the seal lock nut 14 24 Nm 10 18 ft Ibf 8 Stop the prime mover and remove the pressure gauges installed in gauge ports M4 and M5 Reinstall the plugs in the gauge ports 9 Reconnectthe external control linkage for MDC or control signal input for EDC to the pump Reconnect the work function SAUER G SUNDSTRAND Series 42 Adjustments and Minor Repairs 4 4 MDC Control Module The manual displacement control MDC module provides control of the pump servo piston through a Lock Washer connection to the summing link pin within the pump ET MDC Handle Isua housing The following procedure shows how to remove and install the control housing Section 4 6 explains how to remove and install the control spool and linkage Control Retaining 1 Clean the external surfaces of the pump If nec Screws essary remove the MDC handle 2 Remove the seven 7 control retaining screws Torx T30 that secure the control to the pump housing Remove the control and co
11. to clean the ports and change the O rings The orifice plugs for the FNR and NFPE are located inside the servo piston covers The orifice plugs for the NFPH are located in the NFPH ports Orifice plugs may be cleaned or replaced Note Future models may contain orifice plate between module and pump housing Removal and Installation of FNR and NFPE Modules 1 Clean pump and module housings 2 Remove four 4 screws retaining module to housing 4 mm Int Hex and remove module from pump housing 3 Remove O rings from the control ports Examine ports for cleanliness Clean sealing surfaces 4 5 Replace locator pin 6 Install new O rings 7 Replace screws 4 7 6 1 Nm 3 5 4 5 ftelbf Removal and Installation of FNR and NFPE Control Orifices Note Future models may contain an orifice plate between module and pump housing This will take the place of the orifice plugs beneath the servo piston cover Remove servo piston cover see section 4 17 Remove orifice plug 1 8 in Int Hex Examine orifice and port for cleanliness Install orifice plug 2 0 3 4 Nm 1 5 2 5 ftelbf Fea eoo ONE Adjustments and Minor Repairs E100012 E Position of NFPH Ports Control Solenoid Control Module Control Ports Locator Pin E100013 E Non Feedback Control Orifice E100014 E Location of Non Feedback Control Orifice SAUER G SUNDSTRAND Series 42 Adjustments and Minor Repairs 4 10 System Check Relie
12. SAUER SUNDSTRAND Series 42 Pumps Service Instructions SAUER G SUNDSTRAND Series 42 Introduction 1 Introduction 1 1 Using This Manual The Adjustment and Minor Repair procedures de tailed herein may be performed by trained personnel without voiding the unit warranty Cleanliness is a primary means of assuring satisfac tory transmission life Cleaning parts by using aclean solvent wash and air drying is usually adequate As with any precision equipment all parts must be kept free of foreign materials and chemicals When per forming service activities protect all exposed sealing surfaces and open cavities from damage and foreign material Whenever removing a service component it is rec ommended that any gaskets and O rings be re 1 2 Safety Precautions placed Lightly lubricate all O rings with clean petro leum jelly prior to assembly All gasket sealing sur faces must be cleaned prior to installing new gaskets All exploded view drawings depict the 28cc frame size For variances in the 41cc frame size see the outline drawings in section 3 Differences in wrench size and torquing for the two frame sizes are noted in the text Note that exterior housing screws are mostly Torx type T30 or T45 These symbols are used within drawings A petroleum jelly GSP Lubricate with clean hydraulic oil Always consider safety precautions before beginning a service procedure Protect yourself and others
13. e Plug E100025 E Housing without Filtration Adapter Suction Filtration Only Filtration Type Closed Circuit Suction Filtration or os Open Circuit Return Line Filtration Bo 2 Systems Sharing a Reservoir with gt 10 Other Gears Clutches or Cylinders Bio Charge Pressure Filtration Filter B ratio is a measure of filter efficiency defined by ISO 4572 It is defined as the ratio of the number of particles greater than a given size x upstream of the filter to number of particles greater than the same size downstream of the filter The B ratio applies to a specific particle size measured in microns SAUER G SUNDSTRAND Series 42 4 17 Servo Piston Covers The servo piston cover can be removed to change the gasket or to inspect change the control orifices for NFP or FNR controls section 4 9 1 Onthe right side side 1 of the pump remove the pump neutral adjustment seal lock nut 13 mm Hex Not necessary on side 2 2 Remove the servo piston cover screws Torx T30 3 The left side side 2 servo cover can be re moved directly On the right side side 1 of the pump the cover should be pushed away from the pump housing It is then necessary to turn the neutral adjust ment screw 5 mm Hex clockwise inward far enough for the servo cover to clear the nearby drain port Then pull the cover away from the housing and turn the cover counterclockwise to disengage it from the adjustment sc
14. eal and Shaft Replacement sisi 22 ATA Auxiliary Mounting Pads itii ae eee denen ate en Med dare BANAAN E ete ee 24 4 15 Charge rete etie Bo uei e tb t t ee iba rar pont deo BP egeta 25 4 16 Filtration eiie ee QA pad ceri en dae ee ee a e de ee Ree 28 4 17 Servo PISton GOVOl S cuo Let teet vue oe tie hie dead Leld 29 4 18 Displacement Limiter Adjustment sise 30 5 Exploded View Parts ee eee eee nene nee nennen 31 5 1 Shat sto ci e E Dt P mto eot 31 5 2 Filtration Charge Relief System Relief and Loop Flushing 32 5 8 Charge Pump Auxiliary Pads and Servo Covers ui 33 5 4 Control Options cm 34 SAUER G SUNDSTRAND Series 42 Model Code 2 Model Code Refer to the model code exhibited on the unit s name plate for information regarding the configuration of the unit 42L28 C ANN1 01 ANA 2CNB NN NN N N N Model Code 428 2051 A 93 23 67890 Serial No Note Some options listed here may not currently be available Some options on your unit may not be listed here This is not an order code See the Series 42 Price Book for up to date ordering information Week No
15. erate at normal speed 5 Loosen the pump neutral adjustment seal lock nut 28cc2 13 mm Hex 41 17 mm Turn the pump neutral adjustment screw 28 5 mm Hex 41cc 7 mm Hex until the system pressure gauge readings are equal 6 Turn the adjustment screw clockwise until one of the gauges registers an increase in system pres sure Note the position of the adjustment screw Turn the screw counterclockwise until the other gauge registers an increase in system pressure Note the position of the adjustment screw 7 Turn the adjustment screw clockwise to a posi tion halfway between the positions noted above The system pressure gauges should indicate equal pressures 8 While holding the adjustment screw in position torque the seal lock nut 28cc 20 26 Nm 15 19 ft Ibf 41 28 51 Nm 21 37 ftelbf 9 Stop the prime mover and remove the hose between gauge ports M4 and M5 Remove the pressure gauges installed in gauge ports M1 and M2 Reinstall the plugs in the gauge ports 10 Reconnect work function IMPORTANT If the pump is equipped with an MDC or EDC the CONTROL neutral adjustment MUST also be performed before putting the pump into service see next section Adjustments and Minor Repairs Pump Neutral Adjustment Screw Pump Neutral Adjustment Seal Lock Nut E100002 E Pump Neutral Adjustment Screw MDC Control Shown SAUER G SUNDSTRAND Series 42 Adjustments and Mi
16. es see section 4 16 Control Neutral Adjustment MDC EDC Control Module MDC Shown Servo Piston Covers Displacement Limiters Shaft r4 Seal N Charge n Pump N T Ge Filtration Options Auxiliary Mounting Pad AJ is a Loop Flushing Valve Left Side View Side 2 Pump Neutral Adjustment System Check Relief Valves Tory En No Filtration Adapter Shown Here Charge Relief Valve Right Side View Side 1 P100101 E Series 42 28cc Variable Pump Control Neutral Adjustment Control Module MDC EDC MDC Shown Servo Piston S Covers Displacement 6 amp Limiters Charge zs Pump 8 Y Shaft Seal Auxiliary Mounting a EN cn Fad Loop Flushing Valve Left Side View Side 2 Series 42 41cc Variable Pump Pump Neutral Adjustment System Check Relief Valves Charge Relief Valve Z Filtration Options No Filtration Adapter Shown Here Right Side View Side 1 P100102 E SAUER G SUNDSTRAND Series 42 Component and Port Locations 3 2 Ports and Pressure Gauges Proper servicing of pumps and motors requires that ments The following outlines show the locations of pressure be measured and monitored at various the various gauge ports The tab
17. f Pumps equipped with housings that include filtration adapters have the appropriate adapter and gasket fastened to the housing with screws Torx T30 16 Nm 12 ftelbf The position of the gauge port 1 1 16 in Hex 11 13 Nm 8 10 ftelbf will vary depending on filtration type Filter Specifications The selection of a filter depends on a number of factors including the contaminant ingression rate the generation of contaminants in the system the required fluid cleanliness and the desired mainte nance interval A filter capable of controlling the fluid cleanliness to ISO 4406 Class 18 13 or better is recommended and may be located either on the inlet suction filtration or discharge charge pressure filtration side of the charge pump Filter capacity depends on desired maintenance levels As a rough guide a capacity in grams equal to twice the charge flow in gpm or 1 2 charge flow in l min has been found to be satisfactory for many closed circuit systems Filter efficiency as measured by a Beta ratio should be as in the table at right See Sauer Sundstrand publication BLN 9887 or 697581 and ATI E 9201 for more information on filtration 28 Adjustments and Minor Repairs M3 Gauge Partial Flow Port Plug Pressure COM Full Flow Pressure Filtration c Filtration Plate Retaining Screws g Suction Filtration Housing with Filtration Adapter Charge Inlet Construction Plug Bor
18. f valve assemblies into the pump housing CAUTION The conical springs MUST be correctly posi tioned on the check poppets or relief valves after installation for proper pump operation 7 Install the valve seat plugs or valve seat bypass plugs into the pump housing and torque 40 95 Nm 30 70 ftelbf Check Poppet or High Pressure Relief Valve Conical Spring With Bypass Ta Valve Seat Retaining Ring Standard Bypass Plunger O Ring Valve Seat Plug Ww Outer O Ring WM Backup Ring Inner O Ring E100015 E System Check Relief Valve Components SAUER G SUNDSTRAND Series 42 4 11 Charge Relief Valve The charge relief valve may be removed for cleaning and installation of fresh O rings The pressure setting may be changed However note that the setting will vary for different charge flows which depends on charge pump size and pump speed The factory setting is set relative to case pressure at 1800 rpm The actual charge pressure will vary at different speeds Shim Adjustable Style 1 Remove the shim adjustable charge relief valve plug 1 in Hex from the pump housing Remove the O ring from the plug Remove the spring and poppet from the housing Do not alter the shims which may be installed between the spring and valve plug or inter change parts with another valve Inspect the poppet and mating seat in the housing for dam age or foreign
19. f Valves High Pressure Relief Charge Check amp Bypass Valves The charge check high pressure relief and the loop bypass functions are all contained within the system check relief SCR valve assembly This assembly may be removed for cleaning and installation of fresh O rings The model code specifies whether high pressure relief valves combination charge check high pressure relief valves and or loop bypass valves are present or not 1 Remove the valve seat plugs 9 mm Int Hex or valve seat bypass plugs 1 in Hex from the pump housing 2 Remove the check poppet or relief valve assem blies from the pump housing The smaller end of each conical spring is crimped to retain it on the check poppet or relief valve Do not remove 3 Inspectthe valves and mating seats in the special plugs for damage or foreign material CAUTION The relief valves are factory set and should not be tampered with except for replacing the entire valve 4 The O ring on the standard bypass plunger may be replaced by removing the retaining ring and removing the plunger from the special valve seat plug Remove the O ring from the plunger and install a new O ring Reinstall the plunger and retaining ring 5 Install a new outer O ring new backup ring and new inner O ring on each valve seat plug 6 Check that the conical springs are properly re tained on the check poppets or relief valves Install the check poppet or high pressure relie
20. from injury The following general precautions should be taken into consideration whenever servicing a hydrostatic system Loss of Hydrostatic Braking Ability WARNING When Series 42 units are used in vehicular hydrostatic drive systems the loss of hydro static drive line power in any mode of opera tion e g acceleration deceleration or neu tral mode may cause a loss of hydrostatic braking capacity A braking system which is independent of the hydrostatic transmission must therefore be provided which is adequate to stop and hold the system should the con dition develop Disable Work Function WARNING Certain service procedures may require the vehicle machine to be disabled wheels raised off the ground work function disconnected etc while performing them in order to prevent injury to the technician and bystanders F100003 2 Fluid Under High Pressure WARNING Use caution when dealing with hydraulic fluid under pressure Escaping hydraulic fluid un der pressure can have sufficient force to pen etrate your skin causing serious injury This fluid may also be hot enough to burn Serious infection or reactions can develop if proper medical treatment is not administered immedi ately Flammable Cleaning Solvents WARNING Some cleaning solvents are flammable To avoid possible fire do not use cleaning sol vents in an area where a source of ignition may be present Copyright 1996 Sauer
21. h MDC and No Filtration Adapter SAUER G SUNDSTRAND Series 42 System Pressure Gauge Port M2 System Pressure Port B System Pressure Port A System Pressure Gauge Port M1 Component and Port Locations Servo Pressure Gauge Port M5 9 Servo Pressure Charge Pressure 2 Gauge Port M4 Gauge Port M3 o QO 8 Charge Pressure a Case Drain Supply For 9 Port L2 c No Charge Pump i Option GC Case Drain 4 Charge Pump Port L1 Inlet Port S NS aS gt Left Side View Side 2 Right Side View Side 1 E 41cc Base Unit with MDC and No Filtration Adapter To Filter Port D Pressure Filtration Charge Pressure Gauge Port M3 Full Flow Pressure Filtration From Filter Port E Pressure Filtration Charge Pressure Gauge Port M3 Partial Flow Pressure Filtration Charge Pressure Gauge Port M3 7 Suction Filtration SL 1a_ P100105 E Filtration Adapter 28cc and 41cc Models SAUER G SUNDSTRAND Series 42 Adjustments and Minor Repairs 4 Adjustment and Minor Repair Instructions 4 1 Size and Torque for Plugs and Fittings Plug and fitting sizes are given here Place a fresh O ring lightly lubricated with petroleum jelly whenever a plug is removed Each should be torqued as indicated A 28cc unit with manual displacement contr
22. iliary mounting pad charge pump cover while six 6 screws are used with the SAE B auxiliary mounting pad charge pump cover Remove the charge pump cover gasket and the cover locat ing pins Remove the gerotor cover assembly from the charge pump cover or the back of the pump housing Remove the gerotor cover O rings Two 2 O rings are used on the gerotor cover of all pumps An additional O ring was used on the gerotor cover of very early production pumps with the SAE A pad option Remove the gerotor assembly from the gerotor cover or pump housing Remove the gerotor drive pin and drive coupling Remove the gerotor cover locating pin from the pump housing Each part should be inspected separately if they are to be reused If either of the gerotor assembly parts needs to be replaced they must both be replaced Always replace the O rings and charge pump cover gasket Inspect the journal bearing in the gerotor cover for excessive wear Prior to assembly lubricate the gerotor assembly with clean hydraulic oil Install the gerotor drive pin into the hole in the drive coupling and retain with grease or petro leum jelly Install the drive coupling onto the pump shaft with the smaller outside diameter oriented away from the pump shaft Different couplings are used with the different auxiliary pad options Install the gerotor assembly onto the coupling continued Adjustments and Minor Repairs Screw used with
23. in pin engage from the charge pump side of the Spool in the control position piston fork 5 Install and torque the control screws 15 17 Nm 11 13 ftelbf Perform Control Neutral Adjust ment Section 4 3 WARNING Failure to properly engage the link pin with control piston fork will result in incorrect con trol operation which may lead to loss of con trol of the vehicle machine EDC Control Module Assembly E100006 E SAUER G SUNDSTRAND Series 42 Adjustments and Minor Repairs 4 6 MDC EDC Control Spool Control Linkage and Control Neutral Adjustment Screw The control spool control linkage and control neutral adjustment screw can be removed for cleaning and to change the O rings or the seal lock nut Removal of Spool Linkage and Adjustment Screw 1 Clean the external surfaces of the pump 2 Removethe MDC or EDC module and the control gasket from the pump housing see previous two sections Remove the summing link Remove the control spool bore plug 5 16 in Int Hex or screws Torx T30 cover and gasket Remove the opposite bore plug 5 16 in Int Hex and remove the control spool and spring 5 Remove the linkage pivot screw 4 mm Int Hex feedback link and neutral adjustment link 6 Remove the seal lock nut 17 mm Hex and the control neutral adjustment screw 5 mm Int Hex Installation of Spool Linkage and Adjustment Screw 1 Insta
24. it the maximum swash plate position For Series 42 pumps displacement limiters are available on one or both sides ofthe servo piston Adjustment of the displacement limiters should be performed on a test stand WARNING Care should be taken in adjusting displace ment limiters to avoid undesirable speed con ditions The limiter screw must have full thread engagement in the servo piston cover and the seal lock nut must be retorqued after every adjustment to prevent unexpected changes in operating conditions and external leakage dur ing unit operation 1 Mount pump on test stand 2 Loosen displacement limiter seal lock nut 13 mm Hex Do not remove 3 Adjust displacement limiter 4 mm Int Hex Tighten the seal lock nut every time the pump is to be tested 20 26 Nm 15 19 ftelbf One full turn of the displacement limiter adjust ment screw will change the displacement of the pump approximately as follows 4 After reaching proper displacement tighten the seal lock nut 20 26 Nm 15 19 ft Ibf If necessary repeat procedure for displacement lim iter on other side 30 r Displacement Limiter amp Seal Lock Nut y Displacement Limiter Servo Piston Displacement Limiter Right Side Side 1 Exploded View No Need to Remove Limiter or Nut Displacement Limiter Seal Lock Nut Displacement Limiter Cover Displacement Limiter Left Side Side 2 E
25. kwise CCW handle ro tation results in reverse motion The setting must be in accordance with the configu ration of the unit See the model code section 2 if uncertain of the type of NSS you have Alignment of the NSS requires a special alignment tool Dimensions are given at right continued C NSS Cover T NSS Control Nut NSS Cam e 1 NSS Cavity NSS with Weatherpack NSS with Screw Terminals E100009 E Control Cam NSS only NSS with BUA NSS with BUA CW Reverse CCW Reverse P100107 E Top View of NSS Showing Cam Positions 9 16 18UNF 2A THD 04 x 45 Chamfer R 125 236 030 ESI SEHSSSSSSSGON XXX XXX 35 0 L 1250 306 354 2 000 Material 75 DIA x 3 ETD150 All Dimensions in inches P100108 E Alignment Tool SAUER SUNDSTRAND Series 42 Adjustment is performed by setting the cam position within the NSS assembly 1 The MDC module must be removed from the pump housing Refer to section 4 4 Remove NSS 7 8 in Hex Remove the NSS cover by inserting a screw driver into the NSS cavity and popping off the 11 12 13 cover with a hammer Be careful not to damage the internal hardware Remove the control nut 8 mm Hex Use a screwdriver to pop off the cam Set cam in proper orientation according to the unit s configuration i ii or iii above Screw special alignment tool in NSS cavity to hold cam in place
26. l function through connections to the summing EDC Control link pin within the pump housing The following pro Pressure Gauge cedure shows how to remove and install the control Port X1 housings The next section explains how to remove and install the control spool and linkage 1 Clean the external surfaces of the pump If nec essary remove control input signal 2 Remove the seven 7 control retaining screws Torx T30 that secure the control to the pump housing Note the position of the different length screws Remove the control and control gasket from the pump Note See nextsection for instructions on remov EDC Control La ing installing the control spool and linkage Pressure Gauge Port X2 P100106 E 3 Clean the sealing surfaces of the control and the pump housing Place a new gasket in position on the housing EDC Module Showing Port Locations CAUTION The control orifices are part of the control Control Retaining Screws note different sizes gasket Refer to the appropriate Service Parts List to determine the correct gasket 4 Holdthe summing link pin in position while install ing the control The spring on the control spool will tend to push the link to an extreme position The link pin MUST engage the hole in the control piston fork Note It may be easiest to lay the servo piston Gasket Summing side of the control down first then watch the link link p
27. les show the recom points in the hydraulic circuit The Series 42 pump mended gauge size and the fitting size for each port has several locations at which to take these measure Refer to this page when installing pressure gauges Fittin Gauge Pressure Measured Recommended 3 Port Name Gauge Size 028 041 System Pressure for s Ports A and B 600 bar or 10 000 psi 19 16 18 O Ring Fitting 9 16 18 O Ring Fitting Charge Pressure 60 bar or 1000 psi 3 4 16 O Ring Fitting 3 4 16 O Ring Fitting Servo Pressure 60 bar or 1000 psi 9 16 18 O Ring Fitting 9 16 18 O Ring Fitting Case Pressure 35 bar or 500 psi 1 1 16 12 O Ring Fitting 1 5 16 12 O Ring Fitting Charge Pump Inlet 1 bar absolute Vacuum or 30 in Hg Vacuum 1 1 16 12 O Ring Fitting 1 5 16 12 O Ring Fitting System Pressure Servo Pressure Gauge Port M2 Gauge Port M5 Charge Pressure Servo Pressure Gauge Port M3 System Gaude Pore AN Charge Pressure Pressure NI A Case Drain Port L2 as For PotB Non Feedback 9 f o Charge Pump PER Controls 7 Option Pressure ZZ ae a PotA N i or ra EN I Case Drain Port LH AA pede Charge Pump Non Feedback Ew Inlet Port S Controls E WA System Pressure Co J Gauge Port M1 or Left Side View Side 2 Right Side View Side 1 P100103 E 28cc Base Unit wit
28. ll the control neutral adjustment screw and seal lock nut Do not tighten the nut 2 Assemble the neutral adjustment link and feed back link and install as shown Install and torque the linkage pivot screw 8 15 Nm 6 11 ft Ibf 3 Lubricate and install the control spool and spring assembly noting proper orientation WARNING The control spool and spring assembly MUST be oriented in the housing as shown for proper control operation 4 Install and torque the control spool bore plug 41 94 Nm 30 70 ftelbf Or install the control spool cover with a new gasket or plug and torque the screws 15 17 Nm 11 13 ftelbf 5 Install the summing link Hold the control spool in position while engaging the fork on the summing link with the flats on the spool If necessary rotate the spool to engage the summing link 6 Install a new control gasket Hold the summing link and control spool in position while reinstalling the MDC or EDC see section 4 4 or 4 5 Perform Control Neutral Adjustment section 4 3 Summing Link Linkage Pivot Screw Feedback Link Opposite eedback Lin Neutral Bore Plug qu siment Seal Lock Control Neutral Nut ae Spo Bore Plug Control Spool Bore Cover Adjust Screw Ls gt Control Spool E and Spring Note ob orientation Housing without Filtration Adapter Housing with Filtration Adapter E100007 E MDC EDC Control Spool and Linkage Slot in ne
29. material If desired the charge relief valve setting can be changed An approximate rule of thumb is 4 bar 1 25 mm 58 psi 0 050 in The effective setting will vary To confirm the charge relief valve setting mea sure charge pressure port M3 with the pump in stroke The charge pressure should level off when the relief setting is reached Install a new O ring on the valve plug Reinstall the poppet spring and plug with shims and O ring into the pump housing 55 135 Nm 40 100 ft Ibf continued Adjustments and Minor Repairs Shim Adjustable Charge Relief Valve Plug O Ring Shims T Spring 100016 Shim Adjustable Charge Relief Valve Components Approximate Relief Setting vs Shim Thickness 4 bar 1 25 mm 58 psi 0 050 in SAUER G SUNDSTRAND Series 42 Screw Adjustable Style 1 Before removing the screw adjustable relief valve plug mark the plug lock nut and housing so as to approximately maintain the original adjust ment when assembling Remove the screw ad justable charge relief valve plug by loosening the lock nut 1 1 16 in Hex and unscrewing the plug 8 mm Int Hex Remove the O ring from the plug Remove the spring and poppet from the housing Inspect the poppet and mating seat in the hous ing for damage or foreign material Install a new O ring on the valve plug Reinstall the poppet and spring Reinstall the plug with its lock nut 47 57 Nm 34
30. ng Adjustments and Minor Repairs Retaining Ring 227 Roller Bearing ipt N Ke Shaft 27 la cc c ony Shaft Assembly M ORD V XN E100021 E Shaft Components 23 SAUER G SUNDSTRAND Series 42 Adjustments and Minor Repairs 4 14 Auxiliary Mounting Pads The following procedure can be used to remove and install a new auxiliary mounting pad or to install a fresh O ring for the current auxiliary mounting pad Several auxiliary mounting pads are available Auxiliary mounting pads are integrated into the charge pump cover When nothing is mounted on the pads a flange cover is attached to protect the mounting flange This cover is removed when mounting a pump Charge j Pad Cover Screws Retaining Removal of Auxiliary Mounting Pad Cover Screws EN 1 Remove the auxiliary pump or remove the two screws retaining the flange cover A Pad 9 16 in Hex B Pad 23 4 in Hex Remove the O ring 2 Orientpumpsothat charge pump cover auxiliary pad is facing up 3 Remove the charge pump cover The auxiliary pad is integrated into the charge pump cover Use a Torx T45 male driver to remove the screws Auxiliary 5 2 M Mounting Note If adifferent auxiliary pad is being installed Pad A then a new drive coupling must be installed do this follow the instructions in the section on re moving and installing the charge pump next Gasket
31. nor Repairs 4 3 Control Neutral Adjustment for MDC EDC Controls Thecontrol neutral adjustmentaligns the pump swash plate and the control spool so thata zero angle control MDC EDC Control setting provides a zero degree swashplate setting Neutral Adjustment Screw This adjustment should be performed whenever any part of the control or swashplate mechanisms is adjusted or removed or after the pump neutral setting previous section is adjusted WARNING The following procedure requires the vehicle machine to be disabled wheels raised off the ground work function disconnected etc while performing the procedure in order to prevent injury to the technician and bystanders 1 Disconnect the work function Disconnect the external control linkage for MDC or control signal input for EDC from the pump 2 Install pressure gauges in gauge ports M4 and MDC EDC Control Neutral M5 to measure pressure on the pump servo Adjustment Seal Lock Nut piston E100003 E 3 Start the prime mover and operate at normal Control Neutral Adjustment Screw speed EDC Control Shown 4 Loosenthe CONTROL neutral adjustment seal lock nut see drawing 17 mm Hex Turn the control neutral adjustment screw 5 mm Int Hex until the servo piston pressure gauge read ings are as close to equal as possible 5 Turnthe adjustment screw clockwise until one of the gauges registers an increase in pressure on the servo piston Note the
32. ntrol gasket Hold summing link from the pump and control spool in position Note See section 4 6 for instructions on remov ing installing the control spool and linkage 3 Cleanthe sealing surfaces of the control and the pump housing Place a new gasket in position on the housing CAUTION The control orifices are part of the control E100004 E gasket Refer to the appropriate Service Parts List to determine the correct gasket 4 Holdthesumming link pin in position while install ing the control The spring on the control spool will tend to push the link to an extreme position The link pin MUST engage the slot in the control cam A plug is provided on the MDC housing to permit visual inspection of linkage pin engage Summing ment link pin MUST enter the slot in the control cam Note It may be easiest to lay the servo piston side of the control down first then watch the link pin engage from the charge pump side of the pump 5 Install and torque the control screws 15 17 Nm 11 13 ftelbf Perform Control Neutral Adjust ment Section 4 3 E100005 E WARNING Failure to properly engage the link pin with the control cam will result in incorrect control operation which may lead to loss of control of the vehicle machine F100201 11 SAUER G SUNDSTRAND Series 42 Adjustments and Minor Repairs 4 5 EDC Control Module The Electric Displacement Control EDC provides a contro
33. ol MDC is shown Servo Gage Port M4 11 16 in Hex 27 47 Nm BR 3 20 35 ftelbf 28cc 9 16 in Int Hex 95 135 o 70 100 ft lbf 41cc 5 8 in Int Hex Case Drain 125 250 Nm Port L1 90 190 ft Ibf Charge Pressure Gage Port M3 Position Varies Charge Pump Inlet Refer to Filtration Options Port S Torque 115 Nm 85 ftelbf Case Drain EC 11 16 in Hex Port L2 27 47 Nm Port N g 20 35 ft lbf Unused Servo Gage Port M5 11 16 in Hex 27 47 Nm 20 35 ftelbf CG oq RJ 6 he 28cc 9 16 in Int Hex Sel 95 135 Low og 70 100 ft lbf 41cc 5 8 in Int Hex 125 250 Nm MX 90 190 ftelbf Ss NS 11 16 in Hex System Ports 27 47 Nm A and B 20 35 ftelbf 115 Nm 85 ft lbf E100001 E SAUER G SUNDSTRAND Series 42 4 2 Pump Neutral Adjustment The pump neutral adjustment sets the position of the servo piston and pump swashplate relative to the controlling mechanism WARNING The following procedure requires the vehicle machine to be disabled wheels raised off the ground work function disconnected etc while performing the procedure in order to prevent injury to the technician and bystanders 1 Disconnect machine function 2 Connectahose between gauge ports M4 and M5 to equalize the pressures on both ends of the pump servo piston 3 Install pressure gauges in gauge ports M1 and M2 to measure system pressure 4 Start the prime mover and op
34. ors Pumps and Motors Variable Motors Compact Wheel Drives gt Medium Duty Axial Piston Microcontrollers and Hydrostatic Transmission Pumps and Motors Electrohydraulic Controls Packages Open Circuit Axial Piston Pumps Gear Pumps and Motors Genuine Service Parts Worldwide Service Support PT pe LM EL AAT uj KS SAUER SUNDSTRAND COMPANY SAUER SUNDSTRAND GMBH amp CO AUER SUNDSTR AND 2800 East 13th Street Postfach 2460 D 24531 Neum nster Ames 50010 U S A Krokamp 35 D 24539 Neum nster Germany Phone 515 239 6000 FAX 515 239 6618 Phone 04321 871 0 Fax 04321 871 122 SAUER SUNDSTRAND provides comprehensive worldwide service for its Mun extensive network of Authorized Service Centers SI SPV42 E 06 96 300093A BLN 10093 Rev A June 1996
35. r can be connected through port L4 The solenoid override valve can be removed to inspect and remove foreign matter Removal 1 Remove retaining nut 9 16 in Hex 2 Remove solenoid housing 3 Remove retaining ring at base of solenoid 4 Remove solenoid This should be connected to internal spool Installation 1 Replace O ring 2 Place spring and plunger inside of solenoid 3 Attach spool male notch to plunger female notch 4 Insert solenoid spool assembly in solenoid over ride bore Snap retaining ring over base of solenoid Place washer at base of solenoid Install housing and retaining nut 2 4 Nm 1 5 3 5 ft Ibf Adjustments and Minor Repairs Solenoid Override Valve Assembly Solenoid Override Valve Assembly E100010 E y Retaining Nut QD Solenoid Solenoi Housing 2 Retaining Ring Solenoid PNE O Ring eo Spring l P Plunger LAT Spool E100011 E Exploded View of Solenoid Override Assembly SAUER G SUNDSTRAND Series 42 4 9 FNR NFPE and NFPH Controls The 3 position FNR control and the electric and hydraulic non feedback proportional NFPE and NFPH controls are non feedback type controls The FNR and NFPE controls consist of modules mounted on the pump housing The hydraulic input for NFPH is received through ports on the top of the pump 9 16 18 SAE O ring fitting The non feedback controls are set at the factory The control modules can be removed
36. rew 4 Remove the gasket Note FNR and NFPE control orifice plugs are located here see section 4 9 for more informa tion 5 Install new gasket Onthe right side side 1 screw the servo piston cover on the neutral adjustment screw Then while holding the cover turn the neutral adjust ment screw CCW to engage the cover to the screw threads 7 Install servo piston cover screws 15 17 Nm 11 13 ft Ibf 8 Onthe right side side 1 loosely install neutral adjustment seal lock nut Perform pump neutral adjustment section 4 2 WARNING After installing the servo piston cover on right side side 1 of the pump the pump neutral adjustment and control neutral adjustment MUST be performed before the vehicle ma chine is put back into service CAUTION Performance of the above procedure may ad just the position of the displacement limiter somewhat Adjustments and Minor Repairs Pump Neutral Ajustment Seal Lock Nut 7 gt Servo Piston Servo Piston Cover Cover Screw Servo Piston Cover Non Feedback and Automotive controls only Pump Neutral Adjustment Screw Servo Piston Cover Right Side Side 1 T servo Piston Servo Piston Cover Servo Piston Cover Left Side Side 2 E100026 E Servo Piston Cover Components 29 SAUER G SUNDSTRAND Series 42 Adjustments and Minor Repairs 4 18 Displacement Limiter Adjustment Displacement limiters can lim
37. ring must be securely retained to the spool by the washer Install the loop flushing valve spool assembly into its bore Install a new O ring on the loop flushing plug and install 27 47 Nm 20 35 ftelbf Loop Flushing Relief Valve 1 Remove the loop flushing relief valve internal hex plug 5 8 in Hex from the pump housing Remove the O ring from the plug Remove the spring and poppet from the housing Do not alter the shims which are installed be tween the spring and valve plug or interchange parts with another valve Inspect the poppet and mating seat in the housing for damage or foreign material Inspect the orifice in the valve poppet Install a new O ring on the valve plug Reinstall the poppet spring shims and plug with O ring into the pump housing 15 34 Nm 15 25 ftelbf Defeating Loop Flushing 1 Remove the loop flushing valve from the pump housing Install the defeat spool into the spool bore in the housing Install the plain plug with O ring into the housing 11 16 in Hex and torque 27 47 Nm 20 35 ftelbf Remove the charge relief valve these parts are not necessary Install the plain hex plug with O ring into the end cap 5 8 in Hex and torque 15 34 Nm 15 25 ft Ibf Adjustments and Minor Repairs Loop Flushing N elif Plug Loop Flushing Relief Plug Defeat g O Ring O Ring Shims 100 Spring b Poppet Loop Flushing Plug O Ring Loop Flushing Plug Defeat
38. ts Pin 1 Charge Pump Cover Locating 2 nil Hu eA AA m e J 1 i G P 1 eroter Cavity Zl T Outlet Plug Pu Charge Charge Pump Defeat Inlet Charge Pump Inlet Plug Charge Inlet For Wrench Sizes and Torquing See Filtration Section E100024 E No Charge Pump Option Components No Charge Pump Option Components Housing with Filtration Adapter Housing without Filtration Adapter 27 SAUER G SUNDSTRAND Series 42 4 16 Filtration Filtration of foreign matter from the hydraulic fluid is of primary importance Dirt and foreign fluids within the hydraulic circuit will greatly reduce the life of the hydraulic equipment Filter Related Pump Hardware Filtration mechanisms for the Series 42 pump may be before suction filtration or after charge pressure filtration the charge pump Sauer Sundstrand pro vides a filtration adapter to provide for each type of filtration configuration If filtration is provided for elsewhere in the hydraulic circuit the pump will not have a filtration adapter Pumps equipped with housings without filtration adapters have an additional construction bore nextto the charge relief valve which is unused and plugged 5 8 in Hex 21 33 Nm 15 25 ftelbf When these pumps are equipped with suction filtration the exter nalcharge inletis plugged 5 16 in Int Hex 41 94 Nm 30 70 ftelb
39. utral adjust link must engage groove in adjusting screw Feedback link must enter slot in Servo piston 4 A Fork on summing link must engage flats on control spool E100008 E Servo Piston Linkage and Control Spool Internal Parts Shown with Housing Removed SAUER G SUNDSTRAND Series 42 Adjustments and Minor Repairs 4 7 MDC Neutral Start Backup Alarm Switch The Neutral Start Switch NSS prevents the engine and pump from being started when the pump is out of neutral The NSS should be wired in series with the engine starting circuit The switch contact is closed at the control handle s neutral position and opens when the control handle is rotated 1 5 to 2 from neutral The Backup Alarm Switch BUA outputs an elec tronic signal when the control handle is in a reverse position This switch is normally wired in series with an audio output The switch contact is open until the control handle is rotated 2 6 to 3 75 in the reverse direction CAUTION The control handle s neutral position must agree with the pump s neutral position for the NSS BUA to work effectively see section 4 3 The Neutral Start Backup Alarm Switch assembly can be configured for three different settings i ANeutral Start Switch only ii A Neutral Start Switch with Backup Alarm for units where clockwise CW handle rotation re sults in reverse motion iii A Neutral Start Switch with Backup Alarm for units where countercloc
40. xploded View No Need to Remove Limiter or Nut E100027 E Displacement Limiters SAUER G SUNDSTRAND Series 42 Exploded View Parts Drawings 5 Exploded View Parts Drawings 5 1 Shaft Options E100028 31 SAUER G SUNDSTRAND Series 42 Exploded View Parts Drawings 5 2 Filtration Charge Relief System Relief and Loop Flushing H005 ce ae H003 F051 FO50A F050 ES F077 E100029 32 SAUER G SUNDSTRAND Series 42 Exploded View Parts Drawings 5 3 Charge Pump Auxiliary Pads and Servo Covers E100030 33 SAUER G SUNDSTRAND Series 42 Exploded View Parts Drawings 5 4 Control Options E100031 34 SAUER SUNDSTRAND Series 42 Notes Exploded View Parts Drawings 35 SAUER G SUNDSTRAND Hydraulic Power Systems SAUER SUNDSTRAND Hydraulic Power Systems Market Leaders Worldwide SAUER SUNDSTRAND is a world leader in the design and SAUER SUNDSTRAND specializes in integrating a full manufacture of Hydraulic Power Systems Research and range of system components to provide vehicle designers development resources in both North America and Europe with the most advanced total design system enable SAUER SUNDSTRAND to offer a wide range of design solutions utilizing hydraulic power system SAUER SUNDSTRAND is Your World Source for technology Controlled Hydraulic Power Systems Heavy Duty Axial Piston Heavy Duty Bent Axis Cartridge Mot
41. ydraulic for NFP H High Pressure Relief Setting 17 175 bar 2450 psi 5 NSS BAS CCW Handle Rot Port A 19 190 bar 2755 psi Weatherpack for MDC 21 210 bar 3045 psi N None or Not Applicable 23 230 bar 3330 psi Solenoid Override with MDC Ase JAN Ovemde J Weather Pack 250 8625 3 Jor EDC Input or EDC Input 14 85 mA J High Pressure Relief Setting 28 280 bar 4060 psi Inching Braking for or 400 1200 mA or 5 20 bar Port B 30 300 bar 4350 psi a ad a ae for NFP 34 345 bar 5000 psi E 12V Override Brake Port 00 No HPRV No Check Valves N None or Not Applicable K Loop Bypass Valve N None 1 6 Standard Handle fpr MDC B Yes Handle for MDC or M S Connector for EDC i imi i 4 Connector for EDC or Amp Connector for L Displacement Limiters Side 1 N 0 None i imi Si A 1 Yes Max Di or Connector for NFP 2 5 Clevis Handle for MDC M Displacement Limiters Side 2 es Set at Max Disp or Weather Pack for EDC N Special Hardware Features NNN None P Special Non Hardware Features NNN None SAUER G SUNDSTRAND Series 42 Component and Port Locations 3 Component and Port Locations 3 1 Component Locations A pump with a manual displacement control MDC and no filtration adapter is shown With non feedback and automotive controls the positions of the case drains vary shown in gray With a filtration adapter the porting in the Filtration Options area vari
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