2011 INFINITI QX56 brake

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

FRONT PROPELLER SHAFTDLN-129
< REMOVAL AND INSTALLATION > [FRONT PROPELLER SHAFT: 2F P15]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
Removal and InstallationINFOID:0000000006222357
REMOVAL
1. Shift the transmission to the neutral pos ition, and then release the parking brake.
2. Remove protector A and B with power tool. Refer to SCS-39, "
PPMU, MIDDLE TUBE ASSEMBLY, PPMU
PIPE : Removal and Installation".
3. Remove rear engine mount cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
4. Put matching mark (A) on front propeller shaft flange yoke and final drive companion flange.
CAUTION:
For matching mark, use paint. Never damage propeller shaft
flange and final drive companion flange.
5. Put matching mark (A) on front propeller shaft flange yoke and transfer companion flange.
CAUTION:
For matching mark, use paint. Never damage propeller shaft
flange and transfer companion flange.
6. Remove the propeller shaft assembly fixing bolts.
7. Remove propeller shaft assembly from the front final drive and transfer.
8. Perform inspection after removal. Refer to DLN-131, "
Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Align matching mark (A) to install propeller shaft flange yoke and
transfer companion flange.
 Align matching mark (A) to install propeller shaft flange yoke and front final drive companion flange.
 After assembly, perform a driving test to check propeller shaft
vibration. If vibration occurred, separate propeller shaft from final
drive. Reinstall companion flange after rotating it by 90, 180, 270
degrees. Then perform driving test and check propeller shaft vibra-
tion again at each point.
 If propeller shaft or final drive has been replaced, connect them as follows:
- Install the propeller shaft while aligning its matching mark (A) with the matching mark (B) on the joint as close as possible.
Disassembly and AssemblyINFOID:0000000006222358
DISASSEMBLY
JPDID0207ZZ
JPDID0207ZZ
PDIA0423E
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

REAR PROPELLER SHAFTDLN-137
< REMOVAL AND INSTALLATION > [REAR PROPELLER SHAFT: 2F P26]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
Removal and InstallationINFOID:0000000006222366
REMOVAL
1. Shift the transmission to the neutral pos ition, and then release the parking brake.
2. Put matching mark (A) on rear propeller shaft flange yoke and rear drive companion flange.
CAUTION:
For matching mark, use paint. Never damage propeller shaft
flange and final drive companion flange.
3. Put matching mark (A) on rear propeller shaft flange yoke and transfer companion flange.
CAUTION:
For matching mark, use paint. Never damage propeller shaft
flange and transfer companion flange.
4. Remove the propeller shaft assembly fixing bolts.
5. Remove propeller shaft assembly from the rear final drive and transfer.
6. Perform inspection after removal. Refer to DLN-146, "
Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Align matching mark (A) to install propeller shaft flange yoke and
transfer companion flange.
 Align matching mark (A) to install propeller shaft flange yoke and
rear final drive companion flange.
 After assembly, perform a driving test to check propeller shaft vibration. If vibration occurred, separate propeller shaft from final
drive. Reinstall companion flange after rotating it by 90, 180, 270
degrees. Then perform driving test and check propeller shaft vibra-
tion again at each point.
 If propeller shaft or final drive has been replaced, connect them as follows:
- Install the propeller shaft while aligning its matching mark (A) with
the matching mark (B) on the joint as close as possible.
Disassembly and AssemblyINFOID:0000000006222367
DISASSEMBLY
JPDID0207ZZ
JPDID0207ZZ
PDIA0423E
Revision: 2010 May2011 QX56

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGDLN-141
< SYMPTOM DIAGNOSIS > [REAR PROPELLER SHAFT: 2S1410]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
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-144
< REMOVAL AND INSTALLATION >[REAR PROPELLER SHAFT: 2S1410]
REAR PROPELLER SHAFT
Removal and Installation
INFOID:0000000006222439
REMOVAL
1. Shift the transmission to the neutral posit ion, and then release the parking brake.
2. Put matching mark (A) on rear propeller shaft flange yoke and rear drive companion flange.
CAUTION:
For matching mark, use paint. Never damage propeller shaft
flange and final drive companion flange.
3. Remove the propeller shaft assembly fixing bolts.
4. Remove propeller shaft assembly from the rear final drive and transfer.
5. Perform inspection after removal. Refer to DLN-146, "
Inspec-
tion".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Align matching mark (A) to install propeller shaft flange yoke and
transfer companion flange.
 Align matching mark (A) to install propeller shaft flange yoke and
rear final drive companion flange.
 After assembly, perform a driving test to check propeller shaft vibration. If vibration occurred, separate propeller shaft from final
drive. Reinstall companion flange after rotating it by 90, 180, 270
degrees. Then perform driving test and check propeller shaft vibra-
tion again at each point.
 If propeller shaft or final drive has been replaced, connect them as follows:
- Install the propeller shaft while aligning its matching mark (A) with
the matching mark (B) on the joint as close as possible.
Disassembly and AssemblyINFOID:0000000006222440
DISASSEMBLY
1. Put a matching mark between propeller shaft and flange yoke as shown.
CAUTION:
For matching mark, use paint. Never damage the surface.
JPDID0207ZZ
JPDID0207ZZ
PDIA0423E
SPD128
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

DLN-154
< SYMPTOM DIAGNOSIS >[FRONT FINAL DRIVE: R180A]
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000006222377
Use the chart below to help you find the cause of the symptom. If necessa ry, repair or replace these parts.
×: ApplicableReference
DLN-174, "
Inspection
"
DLN-171, "
Adjustment
"
DLN-174, "
Inspection
"
DLN-171, "
Adjustment
"
DLN-171, "
Adjustment
"
DLN-155, "
Inspection
"
NVH of FRONT PROPELLER SHAFT in this section.
NVH of REAR PROPELLER SHAFT in this section.
NVH in FAX, RAX, FSU and RSU sections.
NVH in WT section.
NVH in WT section.
NVH in FAX and RAX section.
NVH in BR section.
NVH in ST section.
Possible cause and SUSPECTED PARTS
Gear tooth rough
Gear contact improper
Tooth surfaces worn
Backlash incorrect
Companion flange excessive runout
Gear oil improper
PROPELLER SHAFT
AXLE AND SUSPENSION
TIRE
ROAD WHEEL
DRIVE SHAFT
BRAKE
STEERING
Symptom Noise
×××××××××××××
Revision: 2010 May2011 QX56