Infiniti QX4 (R50). Manual - part 507

NOTES

PROPELLER SHAFT &

DIFFERENTIAL CARRIER

SECTION

PD

CONTENTS

PROPELLER SHAFT ......................................................3

Noise, Vibration and Harshness (NVH)
Troubleshooting ...........................................................3

NVH TROUBLESHOOTING CHART

............................3

Components.................................................................4

FRONT PROPELLER SHAFT

.....................................4

REAR PROPELLER SHAFT

.......................................5

On-vehicle Service.......................................................6

PROPELLER SHAFT VIBRATION

...............................6

APPEARANCE CHECKING

........................................6

Removal and Installation .............................................6
Inspection.....................................................................7
Disassembly.................................................................7

CENTER BEARING - 2WD -

.......................................7

JOURNAL (71H AND 80B)

..........................................8

Assembly .....................................................................9

CENTER BEARING - 2WD -

.......................................9

JOURNAL (71H AND 80B)

..........................................9

Service Data and Specifications (SDS)..................... 11

GENERAL SPECIFICATIONS

................................... 11

SERVICE DATA

....................................................... 11

SNAP RING (80B)

.................................................... 11

SNAP RING (71H)

...................................................12

R200A

FRONT FINAL DRIVE ...................................................13

Preparation ................................................................13

SPECIAL SERVICE TOOLS

......................................13

Noise, Vibration and Harshness (NVH)
Troubleshooting .........................................................15
On-vehicle Service.....................................................15

FRONT OIL SEAL REPLACEMENT

...........................15

REAR COVER GASKET REPLACEMENT

..................16

Components...............................................................17
Removal and Installation ...........................................18

REMOVAL

...............................................................18

INSTALLATION

........................................................18

Disassembly...............................................................18

PRE-INSPECTION

...................................................18

FINAL DRIVE HOUSING

..........................................19

DIFFERENTIAL CASE

..............................................21

DIFFERENTIAL SIDE SHAFT

...................................22

Inspection...................................................................23

RING GEAR AND DRIVE PINION

.............................23

DIFFERENTIAL CASE ASSEMBLY

...........................23

BEARING

................................................................23

Adjustment .................................................................24

SIDE BEARING PRELOAD

.......................................24

PINION GEAR HEIGHT AND PINION BEARING
PRELOAD

...............................................................25

TOOTH CONTACT

...................................................29

Assembly ...................................................................30

DIFFERENTIAL SIDE SHAFT

...................................30

DIFFERENTIAL CASE

..............................................31

FINAL DRIVE HOUSING

..........................................32

Service Data and Specifications (SDS).....................36

R200A

.....................................................................36

H233B

REAR FINAL DRIVE .....................................................38

Preparation ................................................................38

SPECIAL SERVICE TOOLS

......................................38

Noise, Vibration and Harshness (NVH)
Troubleshooting .........................................................40
On-vehicle Service.....................................................40

FRONT OIL SEAL REPLACEMENT

...........................40

Components...............................................................42
Removal and Installation ...........................................43

REMOVAL

...............................................................43

INSTALLATION

........................................................43

Disassembly...............................................................43

PRE-INSPECTION

...................................................43

DIFFERENTIAL CARRIER

........................................44

DIFFERENTIAL CASE

..............................................46

Inspection...................................................................47

RING GEAR AND DRIVE PINION

.............................47

DIFFERENTIAL CASE ASSEMBLY

...........................47

BEARING

................................................................47

Limited Slip Differential..............................................47

PREPARATION FOR DISASSEMBLY

........................47

GI

MA

EM

LC

EC

FE

AT

TF

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

DISASSEMBLY

........................................................48

INSPECTION

...........................................................49

ADJUSTMENT

.........................................................50

ASSEMBLY

.............................................................51

Adjustment .................................................................53

PINION GEAR HEIGHT

............................................53

TOOTH CONTACT

...................................................56

Assembly ...................................................................57

DIFFERENTIAL CASE

..............................................57

DIFFERENTIAL CARRIER

........................................58

Service Data and Specifications (SDS).....................62

H233B

.....................................................................62

CONTENTS

(Cont’d)

PD-2

Noise,

V

ibration

and

Harshness

(NVH)

T

roubleshooting

=NBPD0049

NVH

T

ROUBLESHOOTING

CHART

NBPD0049S01

Use

the

chart

below

to
help

you

find

the

cause

of
the

symptom.

If

necessary

,

repair

or
replace

these

parts.

Reference

page

—

—

—

—

PD-6

PD-6

PD-23, 47

PD-29, 56

PD-23, 47

PD-18, 43

—

—

—

—

AX-3

AX-3

SU-3

SU-3

SU-3

BR-6

ST-6

Possible

cause

and

SUSPECTED

P

A

R

T

S

Uneven rotation torque

Excessive center bearing axial end play

Center bearing mounting (insulator) cracks, damage or deterioration

Excessive joint angle

Rotation imbalance

Excessive runout

Rough gear tooth

Improper gear contact

Tooth surfaces worn

Incorrect backlash

Companion flange excessive runout

Improper gear oil

PROPELLER SHAFT

DIFFERENTIAL

DRIVE SHAFT

AXLE

SUSPENSION

TIRES

ROAD WHEEL

BRAKES

STEERING

Symptom

PROPEL-

LER

SHAFT

Noise

××××××

××××××××

Shake

×

×××××××

V

ibration

××××××

××××

×

DIFFER-

ENTIAL

Noise

×××××××

×××××××

×

:

Applicable

GI

MA

EM

LC

EC

FE

AT

TF

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

PROPELLER

SHAFT

Noise,

V

ibration

and

Harshness

(NVH)

T

roubleshooting

PD-3