Infiniti QX56 (Z62). Manual - part 487

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< PRECAUTION >

[FRONT FINAL DRIVE: R180A]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution Necessary for Steering Wheel Rotation after Battery Disconnect

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NOTE:
• Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-

tion, then disconnect both 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 diagnosis 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 battery 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 will 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 both 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 ignition switch is turned to LOCK position.)

6.

Perform self-diagnosis check of all control units using CONSULT-III.

Precaution for Servicing Front Final Drive

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• Before starting diagnosis of the vehicle, understand the symptoms well. Perform correct and systematic

operations. 

• Check for the correct installation status prior to removal or disassembly. When matching marks are required,

be certain they do not interfere with the function 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 damage, 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 several 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.

PREPARATION

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< PREPARATION >

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PREPARATION

PREPARATION

Special Service Tool

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The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number
(Kent-Moore No.)
Tool name

Description

ST3127S000
(J-25765-A)
Preload gauge

Measuring pinion bearing preload and total 
preload

KV381054S0
(J-34286)
Puller

Removing front oil seal 

ST30720000
(J-25405)
Drift
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.185 in) dia.

• Installing front oil seal
• Installing side oil seal
• Installing pinion front bearing outer race

ST27863000
(

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Drift
a: 74.5 mm (2.933 in) dia.
b: 62.5 mm (2.461 in) dia.

• Installing front oil seal
• Installing side oil seal

KV10111100
(J-37228)
Seal cutter

Removing carrier cover

ZZA0806D

ZZA0601D

ZZA0811D

ZZA1003D

S-NT046

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< PREPARATION >

[FRONT FINAL DRIVE: R180A]

PREPARATION

ST3306S001
(J-22888-D)
Differential side bearing puller set
1: ST33051001

(J-22888-20)
Puller

2: ST33061000

(J-8107-2)
Base
a: 28.5 mm (1.122 in) dia.
b: 38 mm (1.50 in) dia.

Removing and installing side bearing inner 
race

KV10112100
(BT-8653-A)
Angle wrench

Tightening the drive gear mounting bolts

ST33230000
(J-35867)
Drift
a: 51 mm (2.01 in) dia.
b: 41 mm (1.61 in) dia.
c: 28 mm (1.10 in) dia.

Installing side bearing inner race

ST30611000
(J-25742-1)
Drift bar

Installing pinion rear bearing outer race
(Use with ST30613000)

ST30613000
(J-25742-3)
Drift
a: 72 mm (2.83 in) dia.
b: 48 mm (1.89 in) dia.

Installing pinion rear bearing outer race

KV38100200
(J-26233)
Drift
a: 65 mm (2.56 in) dia.
b: 49 mm (1.93 in) dia.

Installing pinion front bearing outer race

Tool number
(Kent-Moore No.)
Tool name

Description

NT072

ZZA0120D

ZZA1046D

S-NT090

ZZA1000D

ZZA1143D

PREPARATION

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Commercial Service Tool

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ST30901000
(J-26010-01)
Drift
a: 79 mm (3.11 in) dia.
b: 45 mm (1.77 in) dia.
c: 35.2 mm (1.386 in) dia.

Installing drive pinion rear bearing inner race

ST33200000
(J-26082)
Drift
a: 60 mm (2.36 in) dia.
b: 44.5 mm (1.752 in) dia.

Installing drive pinion front bearing inner race

—

(J-34309)
Differential shim selector tool

Adjusting bearing preload and pinion gear 
height

—

(J-25269-18)
Side bearing disc (2 Req

′

d)

Selecting pinion height adjusting washer

Tool number
(Kent-Moore No.)
Tool name

Description

ZZA0978D

ZZA1002D

NT134

NT135

Tool name

Description

Power tool

Loosening bolts and nuts

Flange wrench

Removing and installing drive pinion lock nut

PBIC0190E

NT035