Infiniti M45 (Y34). Manual — part 730

RSU-1

REAR SUSPENSION

E SUSPENSION

CONTENTS

C

D

F

G

H

I

J

K

L

M

SECTION

RSU

A

B

RSU

REAR SUSPENSION

PRECAUTIONS . . . . . . . . . . . . . . .. 2

Cautions . . . . . . . . . . . . . . . . ... 2

PREPARATION . . . . . . . . . . . . . . ... 3

Special Service Tools . . . . . . . . . . . ... 3
Commercial Service Tools . . . . . . . . . . 3

NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING . . . . . . . . . . . . 4

NVH Troubleshooting Chart . . . . . . . . . . 4

REAR SUSPENSION ASSEMBLY . . . . . . . . 5

On-Vehicle Inspection and Service . . . . . . .. 5

INSPECTION OF BALL JOINT END PLAY . . .. 5
SHOCK ABSORBER INSPECTION . . . . . . 5

Wheel Alignment Inspection . . . . . . . . . . 5

DESCRIPTION . . . . . . . . . . . . . .. 5
PRELIMINARY INSPECTION . . . . . . . ... 5
CAMBER INSPECTION . . . . . . . . . . 5
TOE-IN . . . . . . . . . . . . . . . . .. 6

Components . . . . . . . . . . . . . . . . 7

SHOCK ABSORBER . . . . . . . . . . . . .. 9

Removal and Installation . . . . . . . . . . .. 9

REMOVAL . . . . . . . . . . . . . . . . 9
INSPECTION AFTER REMOVAL . . . . . . . 9
INSTALLATION . . . . . . . . . . . . . . 9

Disassembly and Assembly . . . . . . . . . . 9

DISASSEMBLY . . . . . . . . . . . . . . 9
INSPECTION AFTER DISASSEMBLY . . . . . 9
ASSEMBLY . . . . . . . . . . . . . . ... 9

SUSPENSION ARM . . . . . . . . . . . . . 10

Removal and Installation . . . . . . . . . . 10

REMOVAL . . . . . . . . . . . . . . ... 10
INSPECTION AFTER REMOVAL . . . . . ... 10
INSTALLATION . . . . . . . . . . . . . 11

RADIUS ROD . . . . . . . . . . . . . . . 12

Removal and Installation . . . . . . . . . . 12

REMOVAL . . . . . . . . . . . . . . ... 12
INSPECTION AFTER REMOVAL . . . . . ... 12
INSTALLATION . . . . . . . . . . . . ... 12

FRONT LOWER LINK . . . . . . . . . . . .. 13

Removal and Installation . . . . . . . . . . 13

REMOVAL . . . . . . . . . . . . . . ... 13
INSPECTION AFTER REMOVAL . . . . . ... 13
INSTALLATION . . . . . . . . . . . . ... 13

REAR LOWER LINK & COIL SPRING . . . . . . 14

Removal and Installation . . . . . . . . . . 14

REMOVAL . . . . . . . . . . . . . . ... 14
INSPECTION AFTER REMOVAL . . . . . ... 14
INSTALLATION . . . . . . . . . . . . ... 14

STABILIZER BAR . . . . . . . . . . . . . . 15

Removal and Installation . . . . . . . . . . 15

REMOVAL . . . . . . . . . . . . . . ... 15
INSPECTION AFTER REMOVAL . . . . . ... 15
INSTALLATION . . . . . . . . . . . . ... 15

REAR SUSPENSION MEMBER . . . . . . . ... 16

Removal and Installation . . . . . . . . . . 16

REMOVAL . . . . . . . . . . . . . . ... 16
INSPECTION AFTER REMOVAL . . . . . ... 16
INSTALLATION . . . . . . . . . . . . ... 16

SERVICE DATA . . . . . . . . . . . . . . 17

Wheel Alignment . . . . . . . . . . . . . 17
Ball Joint . . . . . . . . . . . . . . . . . 17
Wheelarch Height (Unladen*) . . . . . . . . . 17

RSU-2

PRECAUTIONS

PRECAUTIONS

PFP:00001

Cautions

AES0008R

●

When installing rubber bushings, final tightening must be carried out under unladen condition with tires on
level ground. Oil will shorten the life of rubber bushings. Be sure to wipe off any spilled oil.

●

Unladen condition means that fuel, coolant and lubricant are full. Spare tire, jack, hand tools and mats in
designated positions.

●

After servicing suspension parts, be sure to check wheel alignment.

●

Caulking nuts are not reusable. Always use new ones when installing. Since new caulking nuts are pre-
oiled, tighten as they are.

PREPARATION

RSU-3

C

D

F

G

H

I

J

K

L

M

A

B

RSU

PREPARATION

PFP:00002

Special Service Tools

AES0008S

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

Commercial Service Tools

AES000D6

Tool number
(Kent-Moore No.)
Tool name

Description

ST3127 S000
(See J25742-1)
Preload gauge
1. GC91030000
Torque wrench (J25765-A)
2. HT62940000 ( — )
Socket adapter (1/2

″

)

3. HT62900000 ( — )
Socket adapter (3/8

″

)

Measuring rotating torque of ball joint

NT124

Tool number

Description

Power tool

●

Removing wheel nuts

●

Removing rear suspension component
parts

●

Removing brake caliper assembly

PBIC0190E

RSU-4

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

PFP:00003

NVH Troubleshooting Chart

AES0008T

Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.

×

: Applicable

Reference page

RSU-

7

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9

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RSU-

7

RSU-

5

RSU-1

5

NVH i

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NVH i

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.

NVH

in

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FSU s

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.

NVH i

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NVH i

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NVH i

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RAX s

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.

NVH i

n

BR s

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.

NVH i

n

PS s

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c

ti

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.

Possible cause and SUSPECTED PARTS

Im

pr

ope

r i

n

st

al

la

ti

on,

l

o

o

s

ene

ss

Shoc

k abso

rbe

r def

or

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a

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on,

dam

age

or

d

e

fl

ec

ti

on

Bush

in

g

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ount

ing det

er

io

ra

ti

o

n

Par

ts

i

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te

rf

er

enc

e

Sp

ri

n

g

fa

tig

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e

Susp

ensi

o

n

l

oos

enes

s

In

cor

rec

t w

hee

l al

ig

nm

ent

S

tab

ili

z

er

f

a

ti

g

u

e

PROPELLER SHAFT

DI

FF

ERENTI

AL

FRONT A

X

LE

AND FRONT

SUSPENSION

TIR

E

S

ROAD

W

H

EEL

DRI

VE SHAFT

BRAKES

STEERING

Symptom

REAR SUSPENSION

Noise

×

×

×

×

×

×

×

×

×

×

×

×

×

×

Shake

×

×

×

×

×

×

×

×

×

×

×

×

Vibration

×

×

×

×

×

×

×

×

×

×

Shimmy

×

×

×

×

×

×

×

×

×

×

Judder

×

×

×

×

×

×

×

×

Poor quality ride or
handling

×

×

×

×

×

×

×

×

×

×