differential INFINITI QX56 2011 Factory Owner's Manual

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)BRC-49
< ECU DIAGNOSIS INFORMATION > [WITH VDC]
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BRC
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C 111 5 When difference in wheel speed between any wheel and others is detected during
the vehicle is driven, because of installation of other tires than specified. The following functions are sus-
pended.
 VDC function
 TCS function
 ABS function
 hill start assist function
 Brake limited slip differential
(BLSD) function
C 111 6
 When stop lamp switch signal is not input when brake pedal depress.
 When stop lamp switch signal is not input when stop lamp relay operates.
C 111 8
*1When a malfunction is detected in transfer control unit system.
C1120 When a malfunction is detec ted in front LH ABS IN valve.
The following functions are sus-
pended.
 VDC function
 TCS function
 ABS function
 EBD function
 hill start assist function
 Brake limited slip differential (BLSD) function
C1121 When a malfunction is detec
ted in front LH ABS OUT valve.
C1122 When a malfunction is detected in front RH ABS IN valve.
C1123 When a malfunction is det ected in front RH ABS OUT valve.
C1124 When a malfunction is detected in rear LH ABS IN valve.
C1125 When a malfunction is detected in rear LH ABS OUT valve.
C1126 When a malfunction is det ected in rear RH ABS IN valve.
C1127 When a malfunction is detected in rear RH ABS OUT valve.
C1130 When a malfunction is detected in ECM system. The following functions are sus-
pended.
 VDC function
 TCS function
 hill start assist function
 Brake limited slip differential
(BLSD) function
C1140 When a malfunction is detected in actuator relay. The following functions are sus-
pended.
 VDC function
 TCS function
 ABS function
 EBD function
 hill start assist function
 Brake limited slip differential
(BLSD) function
C1142
*2When a malfunction is detected in master cylinder pressure sensor or control pres-
sure sensor. The following functions are sus-
pended.
 VDC function
 TCS function
 hill start assist function
 Brake limited slip differential
(BLSD) function
C1143 When a malfunction is detected in steering angle sensor.
C1144 When neutral position adjustment of steering angle sensor is not complete.
C1145
 When a malfunction is detected in yaw rate signal.
 When yaw rate signal is not continuously received for 2 seconds or more.
 When side G signal is not continuously received for 2 seconds or more.
 When decel G signal is not continuously received for 2 seconds or more.
The following functions are sus-
pended.
 VDC function
 TCS function
 ABS function
 hill start assist function
 Brake limited slip differential
(BLSD) function
C1146 When a malfunction is detected in side/decel G signal.
C1155
 When brake fluid level low signal is detected.
 When an open circuit is detected in brake fluid level switch circuit.
C1160 When calibration of yaw rate/side/decal G sensor is not complete.
C1164 When a malfunction is detected in cut valve 1. The following functions are sus- pended.
 VDC function
 TCS function
 ABS function
 EBD function
 hill start assist function
 Brake limited slip differential (BLSD) function
C1165 When a malfunction is detected in cut valve 2.
C1166 When a malfunction is detected in suction valve 1.
C1167 When a malfunction is detected in suction valve 2. DTC Malfunction detected condition Fail-safe condition
Revision: 2010 May2011 QX56

BRC-50
< ECU DIAGNOSIS INFORMATION >[WITH VDC]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
*1: Models with 4WD System
*2: Models with Advanced Driver Assistance System
Protection FunctionINFOID:0000000006222581
The VDC warning lamp, ABS warning lamp and brake warning lamp turns ON and DTC “C118E” may be
detected in self-diagnosis result of “ABS” when the br
ake pedal is excessively operated, such as air bleeding.
This is not a system malfunction because this occurs due to the temporary decrease in accumulator fluid pres-
sure. The system returns to normal condition when the accu mulator fluid pressure reaches the specified pres-
sure with the ignition switch ON and the VDC warning lamp, ABS warning lamp, and brake warning lamp turn
OFF. After these steps, erase self-diagnos is results for “ABS” with CONSULT-III.
NOTE:
D T C “ C 1111 ” i s d e t e c t e d i n s e l f - d i agnosis results of “ABS” when the a ccumulator system has a malfunction.
DTC Inspection Priority ChartINFOID:0000000006222582
When multiple DTCs are displayed simultaneously, check one by one depending on the following priority list.
C1170 When the information in ABS actuator and electric unit (control unit) is not the same. The following functions are sus-
pended.
 VDC function
 TCS function
 ABS function
 hill start assist function
 Brake limited slip differential
(BLSD) function
C118E When performing excessive brake pedal operation with the vehicle stopped. [When
accumulator fluid pressure reaches 11.43 MPa (114 bar, 116.6 kg/cm
2, 1657 psi) af-
ter reaching 17.3 MPa (173 bar, 176.5 kg/cm2, 2509 psi.] The following functions are sus-
pended.
 VDC function
 TCS function
 ABS function
 EBD function
 hill start assist function
 Brake limited slip differential
(BLSD) function
U1000 When CAN communication signal is not continuously received for 2 seconds or
more. The following functions are sus-
pended.
 VDC function
 TCS function
 ABS function
 hill start assist function
 Brake limited slip differential
(BLSD) function
DTC Malfunction detected condition Fail-safe condition
DTC
 VDC warning lamp
 ABS warning lamp
 Brake warning lamp Condition Description protection function
C118E ON When temporary decrease in accumulator fluid pres-
sure.
NOTE:
System is not malfunction. The following functions are suspended
temporarily
 VDC function
 TCS function
 ABS function
 EBD function
 hill start assist function
 Brake limited slip differential (BLSD)
function
Priority Detected item (DTC)
1  U1000 CAN COMM CIRCUIT
2  C1170 VARIANT CODING
Revision: 2010 May2011 QX56

BRC-132
< SYMPTOM DIAGNOSIS >[WITH VDC]
VEHICLE JERKS DURING
VEHICLE JERKS DURING
DescriptionINFOID:0000000006222667
The vehicle jerks when VDC function, TCS function, ABS
function, EBD function, hill start assist function and
brake limited slip differential (BLSD) function operates.
Diagnosis ProcedureINFOID:0000000006222668
1.CHECK SYMPTOM
Check that the vehicle jerks when VDC function, TCS f unction, ABS function, EBD function, hill start assist
function and brake limited slip differential (BLSD) function operates.
Is the inspection result normal?
YES >> Normal
NO >> GO TO 2.
2.PERFORM THE SELF-DIAGNOSIS
With CONSULT-III.
Perform self-diagnosis for “ABS”.
Is any DTC detected?
YES >> Check the DTC. Refer to BRC-51, "DTC Index".
NO >> GO TO 3.
3.CHECK CONNECTOR
With CONSULT-III.
1. Turn the ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) harness connector.
3. Check connector terminal for deformation, disconnection and looseness.
4. Connect harness connector and perform self-diagnosis for “ABS” again.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Poor connection of connector terminal. Repair or replace connector terminal.
4.CHECK ECM AND TCM SELF-DIAGNOSIS RESULTS
With CONSULT-III.
Perform self-diagnosis for “E NGINE” and “TRANSMISSION”.
Is any DTC detected?
YES >> Check the DTC.
NO >> Replace ABS actuator and electric unit (control unit). Refer to BRC-137, "
Removal and Installa-
tion".
Revision: 2010 May2011 QX56

NORMAL OPERATING CONDITIONBRC-133
< SYMPTOM DIAGNOSIS > [WITH VDC]
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NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006222669
Symptom Result
Brake pedal slightly vibrates and operation sound (motor sound and sound from suspen-
sion) occurs when VDC function, TCS function, ABS function, EBD function, hill start assist
function and brake limited slip differential (BLSD) function operates. This is not a malfunction, The symptom
occurs VDC function
, TCS function, ABS
function, EBD function, hill start assist
function and brake limited slip differential
(BLSD) function that are normally operat-
ed.
Brake stopping distance may become longer than models without ABS function depending
on the road conditions, when
ABS function is operated on slip pery road like rough road,
gravel road or snowy road.
Brake pedal vibrates and operation sound occurs during sudden acceleration and corner-
ing, when VDC function, TCS function, hill start assist function and brake limited slip differ-
ential (BLSD) function is operated.
Brake pedal vibrates and motor sound from the engine room occurs, when the engine starts
or the vehicle starts just after starting the engine This is not a malfunction. The symptom
occurs during the brake fluid accumula-
tion in the accumulator and operational
check of the ABS actuator and electric
unit (control unit).
Acceleration may be felt insufficient depending on the road conditions. This is not a malfunction. The symptom occurs TCS function that puts the highest
priority to obtain the optimum traction
(stability).
TCS may operate momentarily, while driving on a road where friction coefficient varies, or
when downshifting or fully depressing accelerator pedal
ABS warning lamp and VDC warning lamp may turn ON, when the vehicle is on a rotating
turntable or is given a strong shaking or large vibrations on a ship while the engine is run-
ning.
In this case, restart the engine on a nor-
mal road. If the normal condition is re-
stored, there is no malfunction. In that
case, erase self-diagnosis result memory
for “ABS” with CONSULT-III.
VDC warning lamp may turn ON and VDC function, TCS function, hill start assist function
and brake limited slip differential (BLSD) function may not normally operate, when driving
on a special road the is extremely slanted (bank in a circuit course).
A malfunction in yaw rate/side/decel G sensor system may be detected when the vehicle
sharply turns during a spin turn, acceleration turn or drift driving while VDC function and
TCS function are OFF (VDC OFF switch is pressed and VDC OFF indicator lamp is in ON
status).
The vehicle speed does not increase, when the accelerator pedal is depressed while the
vehicle is on a 2-wheel chassis dynamometer for speedometer check.
This is not malfunction. (When checking
the vehicle on a chassis dynamometer,
operate VDC OFF switch so that TCS
function is OFF.)
The VDC warning lamp, ABS warn ing lamp and brake warning lamp turn ON and DTC
“C118E” may be detected in self-diagnosis resu lt of “ABS” when the brake pedal is exces-
sively operated, such as air bleeding. This is not a system malfunction because
this occurs due to the temporary de-
crease in accumulator fluid pressure. The
system returns to no
rmal condition when
the accumulator fluid pressure reaches
the specified pressure with the ignition
switch ON and the VDC warning lamp,
ABS warning lamp, a nd brake warning
lamp turn OFF. After these steps, ABS
self-diagnosis results are erased.
VDC OFF indicator lamp turns ON and TCS function is not operate when 4WD mode is “4L”.
(Models with 4WD system) This is not a malfunction. When the 4WD
mode becomes “4L” state, the TCS func-
tion is disabled. This function is enabled
when the 4WD mode becomes “AUTO”
or “4H”.
Revision: 2010 May2011 QX56

DLN-4
Commercial Service Tools .....................................125
SYMPTOM DIAGNOSIS ............................126
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING ......................... .
126
NVH Troubleshooting Chart ................................ ..126
PERIODIC MAINTENANCE ..................... ..127
FRONT PROPELLER SHAFT ........................ .127
Inspection ............................................................ ..127
REMOVAL AND INSTALLATION ..............128
FRONT PROPELLER SHAFT ........................ .128
Exploded View ..................................................... ..128
Removal and Installation .......................................129
Disassembly and Assembly ...................................129
Inspection ..............................................................131
SERVICE DATA AND SPECIFICATIONS
(SDS) .............. ............................................
133
SERVICE DATA AND SPECIFICATIONS
(SDS) ............................................................... .
133
General Specification .......................................... ..133
Propeller Shaft Runout ..........................................133
Journal Axial Play ..................................................133
REAR PROPELLER SHAFT: 2F P26
SYMPTOM DIAGNOSIS .. ..........................
134
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING ......................... .
134
NVH Troubleshooting Chart ................................ ..134
PERIODIC MAINTENANCE ..................... ..135
REAR PROPELLER SHAFT .......................... .135
Inspection ............................................................ ..135
REMOVAL AND INSTALLATION ..............136
REAR PROPELLER SHAFT .......................... .136
Exploded View ..................................................... ..136
Removal and Installation .......................................137
Disassembly and Assembly ...................................137
Inspection ..............................................................139
SERVICE DATA AND SPECIFICATIONS
(SDS) .............. ............................................
140
SERVICE DATA AND SPECIFICATIONS
(SDS) ............................................................... .
140
General Specification .......................................... ..140
Propeller Shaft Runout ..........................................140
Journal Axial Play ..................................................140
REAR PROPELLER SHAFT: 2S1410
SYMPTOM DIAGNOSIS .. ..........................
141
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING ......................... ..
141
NVH Troubleshooting Chart ................................. .141
PERIODIC MAINTENANCE ......................142
REAR PROPELLER SHAFT .......................... ..142
Inspection ............................................................. .142
REMOVAL AND INSTALLATION .............143
REAR PROPELLER SHAFT .......................... ..143
Exploded View ..................................................... .143
Removal and Installation .......................................144
Disassembly and Assembly ..................................144
Inspection ..............................................................146
SERVICE DATA AND SPECIFICATIONS
(SDS) ........ .................................................
147
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ..
147
General Specification ........................................... .147
Propeller Shaft Runout ..........................................147
Journal Axial Play .................................................147
FRONT FINAL DRIVE: R180A
PRECAUTION ............... ............................
148
PRECAUTIONS .............................................. ..148
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect ................................ .
148
Precaution for Servicing Front Final Drive ............148
PREPARATION .........................................149
PREPARATION .............................................. ..149
Special Service Tool ............................................ .149
Commercial Service Tool ......................................151
SYSTEM DESCRIPTION ..........................153
STRUCTURE AND OPERATION ................... ..153
Sectional View ..................................................... .153
SYMPTOM DIAGNOSIS ...........................154
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ......................... ..
154
NVH Troubleshooting Chart ................................. .154
PERIODIC MAINTENANCE ......................155
FRONT DIFFERENTIAL GEAR OIL .............. ..155
Inspection ............................................................. .155
Draining .................................................................155
Refilling .................................................................155
REMOVAL AND INSTALLATION .............156
FRONT OIL SEAL .......................................... ..156
Exploded View ..................................................... .156
Revision: 2010 May2011 QX56

DLN-5
CEF
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DLN
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Removal and Installation .....................................
..
156
SIDE OIL SEAL ................................................160
Exploded View .................................................... ..160
Removal and Installation .......................................160
UNIT REMOVAL AND INSTALLATION ....162
FRONT FINAL DRIVE ASSEMBLY ............... ..162
Exploded View .................................................... ..162
Removal and Installation .......................................162
UNIT DISASSEMBLY AND ASSEMBLY ..164
SIDE SHAFT ................................................... ..164
Exploded View .................................................... ..164
Disassembly ..........................................................165
Assembly ...............................................................166
Inspection ..............................................................166
DIFFERENTIAL ASSEMBLY ...........................167
Exploded View .................................................... ..167
Disassembly ..........................................................168
Assembly ...............................................................169
Adjustment ............................................................171
Inspection ..............................................................174
DRIVE PINION ..................................................176
Exploded View .................................................... ..176
Disassembly ..........................................................177
Assembly ...............................................................179
Adjustment ............................................................181
Inspection ..............................................................184
SERVICE DATA AND SPECIFICATIONS
(SDS) ......... ................................. ................
185
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ..
185
General Specifications ........................................ ..185
Drive Gear Runout ................................................185
Preload Torque .....................................................185
Backlash ................................................................185
Companion Flange Runout ...................................185
REAR FINAL DRIVE: R230
PRECAUTION ................ ............................
186
PRECAUTIONS .............................................. ..186
Service Notice or Precautions for Rear Final Drive ..186
PREPARATION .........................................187
PREPARATION .............................................. ..187
Special Service Tool ........................................... ..187
Commercial Service Tool ......................................189
SYSTEM DESCRIPTION ...........................191
STRUCTURE AND OPERATION ...................191
Sectional View ..................................................... ..191
SYMPTOM DIAGNOSIS ............................192
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING .........................
192
NVH Troubleshooting Chart ................................ ..192
PERIODIC MAINTENANCE ......................193
REAR DIFFERENTIAL GEAR OIL .................193
Inspection ............................................................ ..193
Draining .................................................................193
Refilling ..................................................................193
REMOVAL AND INSTALLATION .............194
FRONT OIL SEAL ...........................................194
Exploded View ..................................................... ..194
Removal and Installation .......................................194
SIDE OIL SEAL ...............................................199
Exploded View .......................................................199
Removal and Installation .......................................199
UNIT REMOVAL AND INSTALLATION ....201
REAR FINAL DRIVE .......................................201
Exploded View ..................................................... ..201
Removal and Installation .......................................201
UNIT DISASSEMBLY AND ASSEMBLY ..203
DIFFERENTIAL ASSEMBLY ..........................203
Exploded View ..................................................... ..203
Disassembly ..........................................................204
Assembly ...............................................................206
Adjustment .............................................................210
Inspection ..............................................................215
DRIVE PINION ................................................216
Exploded View .......................................................216
Disassembly ..........................................................217
Assembly ...............................................................218
Adjustment .............................................................220
Inspection ..............................................................220
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... ...........................................
222
SERVICE DATA AND SPECIFICATIONS
(SDS) ...............................................................
222
General Specification .......................................... ..222
Drive Gear Runout .................................................222
Side Gear Clearance .............................................222
Preload Torque ......................................................222
Backlash ................................................................222
Companion Flange Runout ....................................222
Revision: 2010 May2011 QX56

DLN-126
< SYMPTOM DIAGNOSIS >[FRONT PROPELLER SHAFT: 2F P15]
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000006222354
Use the chart below to help you find the cause of the symptom. If necessa ry, repair or replace these parts.
×: ApplicableReference
DLN-127, "
Inspection
"—
—
—
—
DLN-127, "
Inspection
"
DLN-127, "
Inspection
"
NVH of FRONT FINAL DRI VE in this section.
NVH of REAR FINAL DRI VE in this section.
NVH in FAX, RAX, FSU and RSU section.
NVH in WT section.
NVH in WT section.
NVH in FAX and RAX section.
NVH in BR section.
NVH in ST section.
Possible cause an d SUSPECTED PARTS
Uneven rotating torque
Center bearing improper installation
Excessive center bearing axial end play
Center bearing mounting (insulator) cracks, damage or deterioration
Excessive joint angle
Rotation imbalance
Excessive runout
DIFFERENTIAL
AXLE AND SUSPENSION
TIRE
ROAD WHEEL
DRIVE SHAFT
BRAKE
STEERING
Symptom Noise
××××××××××××××
Shake × × ××××××
Vibration ××××××× ×× × ×
Revision: 2010 May2011 QX56

DLN-134
< SYMPTOM DIAGNOSIS >[REAR PROPELLER SHAFT: 2F P26]
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000006222363
Use the chart below to help you find the cause of the symptom. If necessa ry, repair or replace these parts.
×: ApplicableReference
DLN-142, "
Inspection
"—
—
—
—
DLN-142, "
Inspection
"
DLN-142, "
Inspection
"
NVH of FRONT FINAL DRI VE in this section.
NVH of REAR FINAL DRI VE in this section.
NVH in FAX, RAX, FSU and RSU section.
NVH in WT section.
NVH in WT section.
NVH in FAX and RAX section.
NVH in BR section.
NVH in ST section.
Possible cause an d SUSPECTED PARTS
Uneven rotating torque
Center bearing improper installation
Excessive center bearing axial end play
Center bearing mounting (insulator) cracks, damage or deterioration
Excessive joint angle
Rotation imbalance
Excessive runout
DIFFERENTIAL
AXLE AND SUSPENSION
TIRE
ROAD WHEEL
DRIVE SHAFT
BRAKE
STEERING
Symptom Noise
××××××××××××××
Shake × × ××××××
Vibration ××××××× ×× × ×
Revision: 2010 May2011 QX56

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGDLN-141
< SYMPTOM DIAGNOSIS > [REAR PROPELLER SHAFT: 2S1410]
C
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DLN
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SYMPTOM DIAGNOSIS
NOISE, VIBRATION, AND HARSHNESS (N VH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000006222436
Use the chart below to help you find the cause of t he symptom. If necessary, repair or replace these parts.
×: Applicable
Reference
DLN-142, "
Inspection
"—
—
—
—
DLN-142, "
Inspection
"
DLN-142, "
Inspection
"
NVH of FRONT FINAL DRI VE in this section.
NVH of REAR FINAL DRI VE in this section.
NVH in RAX and RSU section.
NVH in WT section.
NVH in WT section.
NVH in RAX section.
NVH in BR section.
NVH in ST section.
Possible cause and SUSPECTED PARTS
Uneven rotating torque
Center bearing improper installation
Excessive center bearing axial end play
Center bearing mounting (insulator) cracks, damage or deterioration
Excessive joint angle
Rotation imbalance
Excessive runout
DIFFERENTIAL
AXLE AND SUSPENSION
TIRE
ROAD WHEEL
DRIVE SHAFT
BRAKE
STEERING
Symptom Noise
××××××××××××××
Shake × × ××××××
Vibration ××××××× ×× × ×
Revision: 2010 May2011 QX56

DLN-148
< PRECAUTION >[FRONT FINAL DRIVE: R180A]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution Necessary for Steering W
heel Rotation after Battery Disconnect
INFOID:0000000006222372
NOTE:
 Before removing and installing any control units, first tu rn the push-button ignition switch to the LOCK posi-
tion, then disconnect bot h battery cables.
 After finishing work, confirm that all control unit connectors are connected properly, then re-connect both
battery cables.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If a DTC is detected, perform trouble diagnos is according to self-diagnosis results.
For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the bat tery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the push-button ignition switch to ACC position. (At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock wi ll remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.
5. When the repair work is completed, re-connect bot h battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button igniti on switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT-III.
Precaution for Servicing Front Final DriveINFOID:0000000006222373
 Before starting diagnosis of the vehicle, understand the symptoms well. Perform correct and systematic
operations.
 Check for the correct installation status prior to re moval or disassembly. When matching marks are required,
be certain they do not interfere with the f unction of the parts they are applied to.
 Overhaul should be done in a clean work area, a dust proof area is recommended.
 Before disassembly, completely remove sand and mud from the exterior of the unit, preventing them from
entering into the unit during disassembly or assembly.
 Always use shop paper for cleaning the inside of components.
 Avoid using cotton gloves or a shop cloth to prevent the entering of lint.
 Check appearance of the disassembled parts for dam age, deformation, and abnormal wear. Replace them
with new ones if necessary.
 Gaskets, seals and O-rings should be replaced any time the unit is disassembled.
 Clean and flush the parts sufficiently and blow them dry.
 Be careful not to damage sliding surfaces and mating surfaces.
 When applying sealant, remove the old sealant from the mating surface; then remove any moisture, oil, and
foreign materials from the application and mating surfaces.
 In principle, tighten nuts or bolts gradually in severa l steps working diagonally from inside to outside. If a
tightening sequence is specified, observe it.
 During assembly, observe the specified tightening torque.
 Add new differential gear oil, petroleum jelly, or multi-purpose grease, as specified.
Revision: 2010 May2011 QX56