brake INFINITI QX56 2007 Factory Service Manual

REAR PROPELLER SHAFT
PR-9
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Model 2S1410 4WD
REMOVAL
1. Move the A/T select lever to the N position and release the parking brake.
2. Put matching marks on the rear propeller shaft flange yoke and
the companion flange of the rear final drive as shown.
CAUTION:
For matching marks, use paint. Never damage the rear pro-
peller shaft flange yoke or the companion flange.
3. Remove the bolts, then remove the propeller shaft from the rear
final drive and A/T.
INSPECTION AFTER REMOVAL
• Inspect the propeller shaft run out. If run out exceeds the limit,
replace the propeller shaft assembly.
AWDIA0031ZZ
1. Propeller shaft tube 2. Snap ring 3. Journal bearing
4. Sleeve yoke 5. Journal 6. Flange yoke
⇐Vehicle front
WDIA0049E
Propeller shaft run out limit : 1.02 mm (0.0402 in) or
less
LDIA0121E

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
PS-5
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000003532820
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PS-6PS-6PS-17PS-17PS-17PS-6PS-7PS-7
EM-13, "
Checking Drive Belts
"
PS-7PS-10PS-15PS-13PS-10PS-15
PR-3, "
NVH Troubleshooting Chart
"
FFD-6, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
FSU-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
BR-4, "
NVH Troubleshooting Chart
"
Possible cause and suspect-
ed parts
Fluid level
Air in hydraulic system
Outer socket ball joint swinging force
Outer socket ball joint rotating torque
Outer socket ball joint end play
Steering fluid leakage
Steering wheel play
Steering gear rack sliding force
Drive belt looseness
Improper steering wheel
Improper installation or looseness of tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
FRONT FINAL DRIVE
WHEEL HUB
SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
SymptomNoise× × ××××× × × ××××××× ×
Shake××× × ××××× ×
Vibration××××× × ××× ×
Shimmy×××××××××
Shudder×××××××

STEERING WHEEL
PS-7
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STEERING WHEEL
On-Vehicle Inspection and ServiceINFOID:0000000003532824
CHECKING CONDITION OF INSTALLATION
• Check installation condition of steering gear assembly, front suspension, axle and steering column.
• Check if movement exists when steering wheel is moved up and down, to the left and right and to the axial
direction.
• Check if the mounting nuts for steering gear assembly are loose.
Refer to PS-15
.
CHECKING STEERING WHEEL PLAY
1. Turn tires straight ahead, start engine, then turn steering wheel to the left and right lightly, and measure
steering wheel movement on the outer circumference when steering wheel is turned up to the point where
tires start moving.
CHECKING NEUTRAL POSITION ON STEERING WHEEL
• Check neutral position on steering wheel after confirming that front wheel alignment is correct. Refer to FSU-
6, "Front Wheel Alignment" .
1. Turn tires straight ahead, check if steering wheel is in the neutral position.
2. If it is not in the neutral position, remove steering wheel and reinstall it correctly.
3. If the neutral position cannot be attained by repositioning the steering wheel two teeth or less on steering
stem, loosen tie-rod lock nuts of steering outer sockets, then adjust tie-rods by the same amount in the
opposite direction.
CHECKING STEERING WHEEL TURNING FORCE
1. Park vehicle on a level, dry surface and set parking brake.
2. Start engine.
3. Bring power steering fluid up to operating temperature of 60° – 80°C (140° – 176°F).
4. Tires need to be inflated to specified pressure. Refer to WT-28, "
Tire".
5. Check steering wheel turning force using Tool when steering
wheel has been turned 360° from the neutral position.
6. If steering wheel turning force is out of specification, inspect
steering column. Refer to PS-13, "
Disassembly and Assembly" .
7. If steering column meets specification, repair steering gear.
Refer to PS-17, "
Disassembly and Assembly". End play of the axial direction for steering wheel : 0 mm (0 in)
LGIA0024E
Steering wheel play on the outer circumference : 0 − 35 mm (0 − 1.38 in)
Tool number : J-44372
Steering wheel
turning force: 39 N (4 kg-f, 9 lb-f) or less
WGIA0035E

RAX-4
< SERVICE INFORMATION >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000003532623
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
—
RAX-7RAX-7—
RAX-5—
RFD-7, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
FSU-4, "
NVH Troubleshooting Chart
"
RSU-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
PR-3, "
NVH Troubleshooting Chart
"
BR-4, "
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
FRONT SUSPENSION
REAR SUSPENSION
TIRES
ROAD WHEEL
PROPELLER SHAFT
BRAKES
STEERING
SymptomNoise×× ×× ××× ×××××
Shake× × ×× ×× ×××××
Vibration×× ××× ××× ×
Shimmy×× ×× ×× ××
Shudder×××××××
Poor quality ride or handling×× ××× ×× ×

WHEEL HUB
RAX-5
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WHEEL HUB
On-Vehicle Inspection and ServiceINFOID:0000000003532624
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 necessary.
• 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 InstallationINFOID:0000000003532625
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-19, "
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 sensor 3. Wheel hub and bearing assembly
4. Wheel stud 5. Rear disc rotor 6. Cotter pin

RAX-6
< SERVICE INFORMATION >
WHEEL HUB
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 assembly
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 SHAFT
RAX-7
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REAR DRIVE SHAFT
ComponentINFOID:0000000003532626
Rear Drive Shaft
Removal and InstallationINFOID:0000000003532627
REMOVAL
1. Remove the wheel and tire using power tool.
2. Remove the stabilizer bar clamp. Refer to RSU-21, "
Component".
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 shaft 3. Rear brake and hub assembly
4. Cotter pin
LDIA0050E

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
RFD-7
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000003532600
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable Reference page
RFD-15RFD-15RFD-15RFD-15RFD-15RFD-8
PR-3, "
NVH Troubleshooting Chart
"
RAX-4, "
NVH Troubleshooting Chart
"
RSU-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
RAX-4, "
NVH Troubleshooting Chart
"
BR-4, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
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
REAR AXLE
REAR SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom FINAL DRIVE Noise××××××××××××××

PREPARATION
RSU-3
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PREPARATION
Commercial Service ToolINFOID:0000000003532654
Tool nameDescription
Power tool• Removing wheel nuts
• Removing brake caliper assembly
• Removing rear suspension component
parts
PBIC0190E

RSU-4
< SERVICE INFORMATION >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000003532655
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
RSU-21RSU-30
—
—
—
RSU-21
RSU-23RSU-37
PR-3, "
NVH Troubleshooting Chart
"
RFD-7, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
FSU-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
FAX-4, "
NVH Troubleshooting Chart
"
BR-4, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Shock absorber deformation, damage or deflection
Bushing or mounting deterioration
Parts interference
Spring fatigue
Suspension looseness
Incorrect wheel alignment
Stabilizer bar fatigue
PROPELLER SHAFT
DIFFERENTIAL
FRONT AXLE
FRONT SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
SymptomNoise×××××× ××× ××××××
Shake×××× × × × ××××××
Vibration××××× × × ×× × ×
Shimmy×××× × × ××× ××
Shudder ××× × ××× ××
Poor quality ride or handling××××× ×× × ×××