Infiniti M35/M45 Y50. Manual - part 1028

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

Precautions .............................................................. 2

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

Special Service Tools [SST]  ..................................... 3
Commercial Service Tools ........................................ 3

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

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

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

On-Vehicle Inspection  .............................................. 5

INSPECTION SUSPENSION ARM BALL JOINT 
AXIAL END PLAY  ................................................. 5
SHOCK ABSORBER INSPECTION  ..................... 5

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

DESCRIPTION ...................................................... 5
PRELIMINARY INSPECTION  ............................... 5
GENERAL INFORMATION AND RECOMMEN-
DATIONS .............................................................. 5
THE ALIGNMENT PROCESS  .............................. 6
CAMBER INSPECTION ........................................ 6
TOE-IN .................................................................. 6

Components ............................................................. 7
Removal and Installation  .......................................... 8

REMOVAL ............................................................. 8
INSTALLATION ..................................................... 8

SHOCK ABSORBER ................................................ 10

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

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

Disassembly and Assembly  ................................... 10

DISASSEMBLY ................................................... 10
INSPECTION AFTER DISASSEMBLY  ............... 10
ASSEMBLY ..........................................................11

SUSPENSION ARM .................................................. 12

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

REMOVAL ........................................................... 12
INSPECTION AFTER REMOVAL  ....................... 12
INSTALLATION ................................................... 13

RADIUS ROD ............................................................ 14

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

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

FRONT LOWER LINK  .............................................. 15

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

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

REAR LOWER LINK & COIL SPRING ..................... 16

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

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

STABILIZER BAR  ..................................................... 17

Removal and Installation  ........................................ 17

REMOVAL ........................................................... 17
INSPECTION AFTER REMOVAL  ....................... 17
INSTALLATION ................................................... 17

SERVICE DATA AND SPECIFICATIONS (SDS)  ...... 18

Wheel Alignment (Unladen*)  .................................. 18
Ball Joint  ................................................................. 18
Wheelarch Height (Unladen*) ................................. 18

RSU-2

PRECAUTIONS

PRECAUTIONS

PFP:00001

Precautions

NES000J2

●

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

–

Unladen conditions mean that fuel, engine coolant and lubricant are full. Spare tire, jack, hand tools and
mats are in designated positions.

●

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

●

Self-lock nuts are not reusable. Always use new ones when installing. Since new self-lock 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 [SST]

NES000J3

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

Commercial Service Tools

NES000J4

Tool number
(Kent-Moore No.)
Tool name

Description

ST3127S000
(See J25742-1)
Preload Gauge
1. GG91030000

(J25765)
Torque wrench

2. HT62940000

(

—

)

Socket adapter

3. HT62900000 

(

—

)

Socket adapter

Measuring rotating torque of ball joint

NT124

Tool name

Description

Power tool

●

Removing wheel nuts

●

Removing brake caliper assembly

●

Removing rear suspension component 
parts

PBIC0190E

RSU-4

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

PFP:00003

NVH Troubleshooting Chart

NES000J5

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

×

: Applicable

Reference page

RSU-

7

RSU-

1

0

—

—

—

RSU-

7

RSU-

5

RSU-

1

7

NVH in

 PR 

s

e

c

ti

o

n

.

NVH i

n

 RFD s

e

c

tio

n

.

NVH 

in

 RAX

 a

n

d

 RS

U

 s

e

c

ti

o

n

s

.

NVH 

in

 W

T

 s

e

c

ti

o

n

.

NVH 

in

 W

T

 s

e

c

ti

o

n

.

NVH i

n

 RAX s

e

c

tio

n

.

NVH in

 BR 

s

e

c

ti

o

n

.

NVH in

 PS 

s

e

c

ti

o

n

.

Possible cause and SUSPECTED PARTS

Im

pr

o

per

 i

n

st

al

la

ti

on

, l

o

osen

ess

Sho

ck abs

or

b

e

r def

or

m

a

ti

on

, dam

ag

e 

o

r def

le

ct

io

n

Bus

h

ing or

 m

oun

ti

ng det

er

io

ra

ti

on

P

a

rt

s

 in

te

rf

e

re

n

c

e

Spr

ing f

a

ti

gue

Sus

pens

io

n l

o

o

s

ene

ss

In

co

rr

ect

 w

h

e

e

l al

ignm

en

t

S

ta

b

ili

z

er

 bar

 f

a

ti

g

u

e

PROPELL

E

R SHAF

T

DIFFERENTIAL

REAR AXLE AND 

RE

AR 

SUSPENSION

TIRES

ROAD  

 W

H

E

E

L

S

DRIVE SHA

F

T

BRAKES

STEERING

Symptom

REAR SUSPENSION

Noise

×

×

×

×

×

×

×

×

×

×

×

×

×

×

Shake

×

×

×

×

×

×

×

×

×

×

×

×

Vibration

×

×

×

×

×

×

×

×

×

×

Shimmy

×

×

×

×

×

×

×

×

×

×

Judder 

×

×

×

×

×

×

×

×

Poor quality ride or 
handling

×

×

×

×

×

×

×

×

×

×