wheel INFINITI QX56 2006 Factory Service Manual

PS-14
STEERING COLUMN
Revision: November 20092006 QX56
ASSEMBLY

Assembly is in the reverse order of disassembly.

Install new tamper resistant self-shear screws.
INSPECTION AFTER ASSEMBLY
When the steering wheel does not turn smoothly, check the steering column as follows:
1. Check the column bearings for damage or unevenness. Lubricate with recommended multi-purpose
grease. Replace the steering column as an assembly, if necessary.
2. Check the column tube for deformation or breakage. Replace the steering column as an assembly, if nec- essary.
3. If the vehicle has been involved in a collision, or if noise and rat- tles are heard during a turn, check the length "L" of the column.
If out of specification, replace the steering column as an assem-
bly.
4. Check for proper lubrication, apply grease as necessary.
5. Check for wear around the seal edges, replace the steering col- umn as an assembly as necessary.
6. Check for corrosion or pitting around the seal sliding area.
WGIA0009E
Steering column length "L" : 610 mm (24.02 in)
WGIA0080E

POWER STEERING GEAR AND LINKAGEPS-15
C
DE
F
H I
J
K L
M A
B
PS
Revision: November 2009 2006 QX56
POWER STEERING GEAR AND LINKAGEPFP:49001
Removal and InstallationEGS000UH
CAUTION:
Spiral cable may snap due to steering operation if steering column is separated from steering gear
assembly. Therefore secure steering wheel to avoid turning.
REMOVAL
1. Turn wheels to the straight-ahead position.
2. Remove tires from vehicle using power tool.
3. Remove undercover using power tool.
4. On 4WD model, remove front final drive, then support drive shafts with wire. Refer to FFD-12, "
Removal
and Installation" .
5. Remove cotter pin at steering outer socket and discard, then loosen nut.
6. Remove steering outer socket from steering knuckle using Tool. Be careful not to damage ball joint boot.
CAUTION:
Temporarily tighten mounting nut to prevent damage to
threads and to prevent Tool from coming off.
7. On 2WD model, remove stabilizer bar mounting bolts and reposition stabilizer bar. Refer to FSU-12,
"Removal and Installation" .
1. Cotter pin2. Mounting bracket3. Mounting insulator
4. Steering gear assembly 5. Washer
WGIA0127E
Tool number : HT72520000 (J-25730-A)
SDIA1434E

PS-16
POWER STEERING GEAR AND LINKAGE
Revision: November 20092006 QX56
8. Remove oil piping (high pressure side and low pressure side)
from steering gear assembly, then drain fluid from piping.
9. Remove lower joint mounting bolt of lower joint shaft.
10. Remove nuts of steering gear assembly using power tool, then remove bolts and steering gear assembly.
INSTALLATION
Installation is in the reverse order of removal.

After removing/installing or replacing steering components, check wheel alignment. Refer to FSU-6,
"Front Wheel Alignment" .

After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to BRC-62,
"Adjustment of Steering Angle Sensor Neutral Position" .

With steering wheel in straight ahead position, make sure slit of
lower joint fits with the projection on rear cover cap, while check-
ing that mark on steering gear assembly aligns with mark on
rear cover cap

After installation, bleed the air from the steering hydraulic system. Refer to PS-6, "Air Bleeding Hydraulic
System" .
LGIA0032E
LGIA0029E
LGIA0024E
SST491C

POWER STEERING GEAR AND LINKAGEPS-17
C
DE
F
H I
J
K L
M A
B
PS
Revision: November 2009 2006 QX56
INSPECTION AFTER INSTALLATION
Check if steering wheel turns smoothly when it is turned several times fully to the left and right lock positions.
Disassembly and AssemblyEGS00124
CAUTION:

Secure steering gear assembly with a vise, using copper plates or something similar to prevent it
from being damaged. Do not grip cylinder with a vise.

Before performing disassembly, clean steering gear assembly with kerosene. Be careful not to
bring any kerosene into contact with the discharge and return port connectors.
DISASSEMBLY
1. Remove cylinder tubes from gear housing assembly.
2. Loosen lock nuts of outer sockets, and remove outer sockets.
3. Remove boot clamps of the small diameter side and the large diameter side, then remove boot.
CAUTION:
When removing boots, be careful not to damage inner socket and gear housing assembly. If they
are damaged, change them to avoid oil leaks.
4. Remove inner sockets.
1. Boot clamp 2. Inner socket3. Boot
4. Boot clamp 5. Outer socket6. Cylinder tubes
7. Gear housing assembly 8. Connector
BGIA0008E

SERVICE DATA AND SPECIFICATIONS (SDS)PS-25
C
DE
F
H I
J
K L
M A
B
PS
Revision: November 2009 2006 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Steering WheelEGS000UN
Steering ColumnEGS000UO
Inspection After Assembly
Unit: mm (in)
Inspection After Removal
Unit: mm (in)
End play of the axial direction for steering wheel
0 mm (0 in)
Steering wheel play on the outer circumference 0 − 35 mm (0 − 1.38 in)
Steering wheel turning force 39 N (4 kg-f, 9 lb-f) or less
Steering column length “L” 610 (24.02)
WGIA0080E
Steering column length “L2” 262 (10.31)
Steering column length “ L1” 158 (6.22)
SGIA0475E

RAX-1
REAR AXLE
D DRIVELINE/AXLE
CONTENTS
CE F
G H
I
J
K L
M
SECTION
A
B
RAX
Revision: November 2009 2006 QX56
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-4
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: November 20092006 QX56
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
CE F
G H
I
J
K L
M A
B
RAX
Revision: November 2009 2006 QX56
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
CE F
G H
I
J
K L
M A
B
RAX
Revision: November 2009 2006 QX56
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