INFINITI QX56 2006 Factory Service Manual

PS-28
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: November 20092006 QX56

RAX-1
REAR AXLE
D DRIVELINE/AXLE
CONTENTS
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PRECAUTIONS .....................................................
..... 2
Caution ................................................................ ..... 2
PREPARATION ...................................................... ..... 3
Special Service Tools (SST) ................................ ..... 3
Commercial Service Tools ................................... ..... 3
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 4
NVH Troubleshooting Chart ................................ ..... 4
WHEEL HUB ......................................................... ..... 5
On-Vehicle Inspection and Service ..................... ..... 5
WHEEL BEARING INSPECTION .................... ..... 5
Removal and Installation ..................................... ..... 5
REMOVAL ........................................................ ..... 5
INSTALLATION ................................................ ..... 6REAR DRIVE SHAFT ............................................
..... 7
Components ........................................................ ..... 7
Removal and Installation ..................................... ..... 7
REMOVAL ........................................................ ..... 7
INSPECTION AFTER REMOVAL .................... ..... 8
INSTALLATION ................................................ ..... 8
Disassembly and Assembly ................................. ..... 8
DISASSEMBLY ................................................ ..... 8
INSPECTION AFTER DISASSEMBLY ............. ..... 9
ASSEMBLY ...................................................... ... 10
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 14
Wheel Bearing ..................................................... ... 14
Drive Shaft ........................................................... ... 14

RAX-2
PRECAUTIONS
Revision: November 20092006 QX56
PRECAUTIONSPFP:00001
CautionEDS001XJ
Observe the following precautions when disassembling and servicing drive shaft.

Perform work in a location which is as dust-free as possible.

Before disassembling and servicing, clean the outside of parts.

Prevention of the entry of foreign objects must be taken into account during disassembly of the service
location.

Disassembled parts must be carefully reassembled in the correct order. If work is interrupted, a clean
cover must be placed over parts.

Paper shop cloths must be used. Fabric shop cloths must not be used because of the danger of lint adher-
ing to parts.

Disassembled parts (except for rubber parts) should be cleaned with kerosene which shall be removed by
blowing with air or wiping with paper shop cloths.

PREPARATIONRAX-3
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PREPARATIONPFP:00002
Special Service Tools (SST)EDS001XK
The actual shapes of the Kent-Moore tools may differ from those of the special service tools illustrated here.
Commercial Service ToolsEDS001XL
Tool number
(Kent-Moore No.)
Tool nameDescription
KV38100500
(—)
Drift Installing drive shaft plug
a: 80 mm (3.15 in) dia.
b: 60 mm (2.36 in) dia.
KV38102200
(—)
Drift Installing drive shaft plug
a: 90 mm (3.54 in) dia.
b: 31 mm (1.22 in) dia.
ZZA0701D
ZZA0920D
Tool name
Description
Power tools Removing bolts and nuts
PBIC0190E

RAX-4
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
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NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS001XM
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
—
RAX-8—
RAX-5—
RFD-7, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
" (FAX), FSU-4, "
NVH Troubleshooting Chart
" (FSU)
RSU-5, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
PR-3, "
NVH Troubleshooting Chart
"
BR-5, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Excessive joint angle
Joint sliding resistance
Imbalance
Improper installation, looseness
Parts interference
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
REAR SUSPENSION
TIRES
ROAD WHEEL
PROPELLER SHAFT
BRAKES
STEERING
Symptom Noise
×× ×× ×× ×××××
Shake × × ×× × ×××××
Vibration ×× ×× × × × ×
Shimmy ×× ×××××
Shudder × × ×× ××
Poor quality ride or handling ×× ×× ×× ×

WHEEL HUBRAX-5
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WHEEL HUBPFP:43202
On-Vehicle Inspection and ServiceEDS001XN
Inspect the components for any looseness or back lash. Inspect each component for any excessive wear or
damage. Replace any components as necessary.
WHEEL BEARING INSPECTION

Move the wheel hub and bearing assembly in the axial direction by hand to check the axial end play.
Check that the axial end play is with specification. Replace the wheel hub and bearing assembly as nec-
essary.

Rotate the wheel hub and bearing assembly to check that there are no unusual noises or other abnormal
conditions. Replace the wheel hub and bearing assembly as necessary.
Removal and InstallationEDS001XO
Rear Wheel Hub and Bearing Assembly
NOTE:
The rear ABS sensor is routed through the back of the rear backing plate and into the side of the wheel hub
and bearing assembly. It is necessary to remove the wheel hub and bearing assembly to remove the rear ABS
sensor.
REMOVAL
1. Remove the wheel and tire using power tool.
2. Remove the rear brake caliper, without disconnecting the hydraulic hose, using power tool. Reposition the
rear brake caliper aside using suitable wire. Refer to BR-28, "
Removal and Installation of Brake Caliper
and Disc Rotor" .
NOTE:

Do not depress the brake pedal while the brake caliper is removed.
3. Remove the rear disc rotor. Axial end play : 0 mm (0 in)
WDIA0189E
1. Back plate
2. Rear ABS sensor3. Wheel hub and bearing assembly
4. Wheel stud 5. Rear disc rotor6. Cotter pin

RAX-6
WHEEL HUB
Revision: November 20092006 QX56
4. Remove the cotter pin, then remove the nut from the drive shaft
using power tool.

Discard the cotter pin, use a new one for installation.
5. Remove the drive shaft. Refer to RAX-7, "
Removal and Installa-
tion" .
6. Remove the four wheel hub and bearing assembly bolts using power tool.

Discard the four wheel hub and bearing assembly bolts, use new ones for installation.
7. Pull out the wheel hub and bearing assembly for access to remove the rear ABS sensor from the wheel hub and bearing
assembly as shown.

Inspect the ABS sensor O-ring, replace the ABS sensor
assembly if damaged.

Clean the ABS sensor hole and mounting surface with a suit-
able brake cleaner and a clean lint-free shop rag. Be careful
that dirt and debris do not enter the axle bearing area.

Apply a coat of suitable grease to the ABS sensor O-ring and
mounting hole.
CAUTION:
Do not pull on the ABS harness.
8. Remove the wheel hub and bearing assembly.
INSTALLATION
Installation is in the reverse order of removal.

Apply grease 44003 7S000 to contact surface between wheel
hub and drive shaft. Use sufficient grease to completely coat
contact area.

Inspect the ABS sensor O-ring, replace the ABS sensor assem-
bly if damaged.

Clean the ABS sensor hole and mounting surface with a suitable
brake cleaner and a clean lint-free shop rag. Be careful that dirt
and debris do not enter the axle bearing area.

Apply a coat of suitable grease to the ABS sensor O-ring and
mounting hole.

Use a new cotter pin for installation.

Use new wheel hub and bearing assembly bolts for installation.
LDIA0050E
LDIA0052E
WDIA0291E

REAR DRIVE SHAFTRAX-7
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REAR DRIVE SHAFTPFP:39600
ComponentsEDS002Z7
Rear Drive Shaft
Removal and InstallationEDS001XP
REMOVAL
1. Remove the wheel and tire using power tool.
2. Remove the stabilizer bar clamp. Refer to RSU-26, "
Components" .
3. Remove the cotter pin and discard, then remove the drive shaft nut from the drive shaft.

Do not reuse the cotter pin, discard after removal and use a
new cotter pin for installation.
4. Remove the six bolts from the inside flange of the drive shaft using power tool.

Do not reuse the drive shaft inside flange bolts, discard after removal and use new bolts for installation.
WDIA0263E
1. Rear final drive assembly 2. Rear drive shaft3. Rear brake and hub assembly
4. Cotter pin
LDIA0050E

RAX-8
REAR DRIVE SHAFT
Revision: November 20092006 QX56
5. Separate the drive shaft from the wheel hub and bearing assembly by lightly tapping the end with a suit-
able hammer and wood block. If it is difficult to separate, use a suitable puller.
6. Remove the drive shaft. CAUTION:
When removing the drive shaft, do not bend at an excessive angle to the drive shaft joint. Do not
excessively extend the slide joint.
INSPECTION AFTER REMOVAL

Move the joint up and down, left and right, and in the axial direc-
tion. Check for any rough movement or significant looseness.

Check the boot for cracks or other damage, and for any grease
leakage.

If necessary, disassemble the drive shaft, and repair as neces-
sary.
INSTALLATION
Installation is in the reverse order of removal.

Do not reuse the drive shaft inside flange bolts, discard after removal and use new bolts for installation.

Do not reuse the cotter pin, discard after removal and use a new cotter pin for installation.
Disassembly and AssemblyEDS001XQ
DISASSEMBLY
Final Drive Side
1. Mount the drive shaft in a vise.CAUTION:
When mounting the drive shaft in a vise, use copper or aluminum plates between the vise and the
drive shaft.
2. Remove the boot bands.
RAA0030D
1. Plug 2. Housing3. Snap ring
4. Ball cage, steel ball, liner race assembly 5. Stopper ring 6. Boot band
7. Boot 8. Shaft9. Circlip
10. Joint sub-assembly
SDIA1488E

REAR DRIVE SHAFTRAX-9
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Revision: November 2009 2006 QX56
3. If the plug needs to be removed, move the boot to the wheel side, then drive the plug out using a suitable
plastic hammer.
4. Remove the stopper ring with a flat-bladed screwdriver as shown, and pull the housing out.
5. Remove the snap ring, then remove the ball cage, steel ball, inner race assembly from the drive shaft.
6. Remove the boot from the drive shaft.
7. Remove any old grease on the housing using paper towels.
Wheel Side
1. Mount the drive shaft in a vise. CAUTION:
When mounting the drive shaft in a vise, use copper or aluminum plates between the vise and the
drive shaft.
2. Remove the boot bands, then remove the boot from the joint sub-assembly.
3. Screw a suitable drive shaft puller 30 mm (1.18 in) or more into the threaded part of the joint sub-assembly. Pull the joint sub-
assembly out of the drive shaft as shown.
CAUTION:

If the joint sub-assembly cannot be removed after five or
more attempts, replace the drive shaft and joint sub-
assembly as a set.

Align the sliding hammer and drive shaft and remove the
joint sub-assembly by pulling directly.
4. Remove the boot from the drive shaft.
5. Remove the circlip from the drive shaft.
6. While rotating the ball cage, remove any old grease on the joint sub-assembly using paper towels.
INSPECTION AFTER DISASSEMBLY
Drive Shaft

Replace the drive shaft if there is any runout, cracking, or other damage.
Joint Sub-assembly

Check for any rough rotation or unusual axial looseness.

Clean any foreign material from inside the joint sub-assembly.
SRA249A
SFA514A
SDIA0606E