2007 INFINITI QX56 service

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DRIVELINE/AXLE
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SECTION FA X
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FA X
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CONTENTS
FRONT AXLE
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution .................................................................2
PREPARATION ...................................................3
Special Service Tool .................................................3
Commercial Service Tool ..........................................3
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING .............................
4
NVH Troubleshooting Chart ......................................4
WHEEL HUB ......................................................5
On-Vehicle Inspection and Service ..........................5
Removal and Installation ..........................................5
DRIVE SHAFT ....................................................7
Removal and Installation ..........................................7
Disassembly and Assembly ......................................8
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
13
Wheel Bearing .........................................................13
Drive Shaft ...............................................................13

FAX-2
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
PrecautionINFOID:0000000003532610
Observe the following precautions when disassembling and servicing the wheel hub and drive shafts.
• 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 component
parts.
• 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 adhering
to parts.
• Disassembled parts (except for rubber parts) should be cleaned with a suitable solvent which shall be
removed by blowing with air or wiping with paper shop cloths.

PREPARATION
FAX-3
< SERVICE INFORMATION >
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PREPARATION
Special Service ToolINFOID:0000000003532611
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolINFOID:0000000003532612
Tool number
(Kent-Moore No.)
Tool nameDescription
ST29020001
(J-24319-01)
Gear arm pullerRemoving ball joint for steering knuckle
a: 34 mm (1.34 in)
b: 6.5 mm (0.256 in)
c: 61.5 mm (2.421 in)
KV40107300
(—)
Boot band crimping toolInstalling boot bands
NT694
ZZA1229D
Tool nameDescription
Power toolsRemoving bolts and nuts
PBIC0190E

FAX-4
< SERVICE INFORMATION >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000003532613
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
FAX-7FAX-8FAX-8FAX-7—
FAX-5
PR-3, "
NVH Troubleshooting Chart
"
FFD-6, "
NVH Troubleshooting Chart
"
Refer to DRIVE SHAFT in this chart.
Refer to WHEEL HUB in this chart.
FSU-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
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
Wheel bearing damage
PROPELLER SHAFT
FRONT FINAL DRIVE
DRIVE SHAFT
WHEEL HUB
SUSPENSION
TIRES
ROAD WHEEL
BRAKES
STEERING
SymptomDRIVE SHAFTNoise, Vibration×× ×× × ×××× ×
Shake× × × × ×××× ×
WHEEL HUBNoise×× ×× × ×××× ×
Shake×× × × ×××× ×
Vibration×× × × ×× ×
Shimmy×× ×××× ×
Shudder× ×××× ×
Poor quality ride or
handling××× ×××

WHEEL HUB
FAX-5
< SERVICE INFORMATION >
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WHEEL HUB
On-Vehicle Inspection and ServiceINFOID:0000000003532614
Make sure the mounting conditions (looseness, backlash) of each component and component status (wear,
damage) are normal.
WHEEL BEARING INSPECTION
• Move wheel hub in the axial direction by hand. Make sure there is
no looseness of wheel bearing.
• Rotate wheel hub and make sure there is no unusual noise or
other irregular conditions. If there are any irregular conditions,
replace wheel hub and bearing assembly.
Removal and InstallationINFOID:0000000003532615
REMOVAL
1. Remove wheel and tire using power tool.
2. Remove engine under cover using power tool.
3. Without disassembling the hydraulic lines, remove caliper torque member bolts using power tool. Then
reposition brake caliper aside with wire. Refer to BR-19, "
Removal and Installation of Brake Caliper and
Disc Rotor" .
NOTE:
Do not press brake pedal while brake caliper is removed.Axial end play limit : 0.05 mm (0.002 in) or less
SMA571A
1. Disc rotor 2. Wheel hub and bearing assembly 3. Wheel stud
4. Splash guard 5. Steering knuckle
WDIA0043E

FAX-6
< SERVICE INFORMATION >
WHEEL HUB
4. Put alignment mark on disc rotor and wheel hub and bearing
assembly, then remove disc rotor.
5. On 4WD model, remove cotter pin, then remove lock nut from drive shaft using power tool. Then remove
end of drive shaft from wheel hub and bearing assembly. Refer to FA X - 7 , "
Removal and Installation" .
6. Remove wheel sensor. Refer to BRC-56, "
Removal and Installation" .
• Inspect the wheel sensor O-ring, replace the wheel sensor assembly if damaged.
• Clean the wheel sensor hole and mounting surface with a suitable brake cleaner and 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 wheel sensor O-ring and mounting hole.
CAUTION:
Do not pull on the wheel sensor harness.
7. Remove wheel hub and bearing assembly bolts using power tool.
8. Remove splash guard and wheel hub and bearing assembly from steering knuckle.
INSPECTION AFTER REMOVAL
Check for deformity, cracks and damage on each part, replace if necessary.
INSTALLATION
Installation is in the reverse order of removal.
• Use new bolts when installing the wheel hub and bearing assembly.
• When installing disc rotor on wheel hub and bearing assembly,
position the disc rotor according to alignment mark.
(When not using the alignment mark, refer to BR-19, "
Removal
and Installation of Brake Caliper and Disc Rotor" .)
• When installing wheel and tire. Refer to WT-7, "
Rotation" .
WDIA0044E
WDIA0044E

DRIVE SHAFT
FAX-7
< SERVICE INFORMATION >
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DRIVE SHAFT
Removal and InstallationINFOID:0000000003532616
REMOVAL
1. Remove wheel and tire using power tool.
2. Remove engine under cover using power tool.
3. Remove wheel sensor harness from mount on knuckle.
CAUTION:
Do not pull on wheel sensor harness.
4. Without disassembling the hydraulic lines, remove brake caliper using power tool. Reposition it aside with
wire. Refer to BR-19, "
Removal and Installation of Brake Caliper and Disc Rotor" .
NOTE:
Avoid depressing brake pedal while brake caliper is removed.
5. Remove coil spring and shock absorber assembly using power tool. Refer to FSU-10, "
Removal and
Installation" .
6. Separate upper link ball joint stud from steering knuckle using
Tool.
• Support lower link with jack.
7. Remove cotter pin, then remove drive shaft nut.
8. Remove drive shaft mounting bolts from front final drive.
9. Remove drive shaft from wheel hub and bearing assembly.
CAUTION:
• When removing drive shaft, do not apply an excessive
angle to drive shaft joint. Also be careful not to exces-
sively extend slide joint.
INSPECTION AFTER REMOVAL
• Move joint up, down, left, right, and in axial direction. Check for any rough movement or significant loose-
ness.
• Check boot for cracks or other damage, and for grease leakage.
• If damaged, disassemble drive shaft to verify damage, and repair
or replace as necessary.
1. Cotter pin 2. Drive shaft nut 3. Drive shaft
LDIA0159E
Tool number : ST29020001 (J-24319-01)
LEIA0095E
RAA0030D

FAX-8
< SERVICE INFORMATION >
DRIVE SHAFT
INSTALLATION
Installation is in the reverse order of removal.
• Tighten wheel nuts to specification. Refer to WT-7, "
Rotation".
Disassembly and AssemblyINFOID:0000000003532617
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.
3. Remove the stopper ring using suitable tool as shown, and pull
the housing off.
1. Sliding joint housing 2. Snap ring 3. Ball cage, steel ball, inner race assembly
4. Stopper ring 5. Boot band 6. Boot
7. Drive shaft 8. Circlip 9. Joint sub-assembly
WDIA0054E
SRA249A