Infiniti G37 Coupe. Manual - part 1063

RSU-2

< SYMPTOM DIAGNOSIS >

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

SYMPTOM DIAGNOSIS

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting Chart

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

×

: Applicable

Reference page

RSU-26

RSU-12

—

—

—

RSU-26

RSU-6

RSU-22

NVH in DLN section.

NVH in DLN section.

NVH 

in 

RAX and RSU sections.

NVH in WT section.

NVH in WT section.

NVH in RAX section.

NVH in BR section.

NV

H

 in

 S

T

 s

e

cti

on

.

Possible cause and SUSPECTED PARTS

Imp

rop

er i

ns

ta

lla

ti

o

n,

 lo

os

en

es

s

Sh

oc

k ab

so

rbe

r 

de

form

a

tio

n, dam

a

ge or 

d

e

flec

ti

on

Bu

sh

in

g o

r m

o

u

n

ti

ng

 de

teri

ora

tio

n

Part

s interf

erence

S

p

rin

g

 f

a

ti

gu

e

Su

sp

en

si

on

 lo

os

en

es

s

In

co

rrec

t wh

ee

l a

lig

nm

en

t

S

tab

ili

ze

r ba

r fa

tig

u

e

PROPELLER S

H

AFT

DIFF

ERENTIAL

REAR A

X

LE 

AND REAR SUSPE

NSION

TI

RE

ROAD WHEE

L

DRIVE SHAFT

BRAKE

STE

E

RING

Symptom

REAR SUSPENSION

Noise

×

×

×

×

×

×

×

×

×

×

×

×

×

×

Shake

×

×

×

×

×

×

×

×

×

×

×

×

Vibration

×

×

×

×

×

×

×

×

×

×

Shimmy

×

×

×

×

×

×

×

×

×

×

Judder 

×

×

×

×

×

×

×

×

Poor quality ride or 
handling

×

×

×

×

×

×

×

×

×

×

PRECAUTIONS

RSU-3

< PRECAUTION >

C

D

F

G

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J

K

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M

A

B

RSU

N

O

P

PRECAUTION

PRECAUTIONS

Precautions for Suspension

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CAUTION:

• When installing rubber bushings, the final tightening must be carried out under unladen conditions

with tires on ground. Oil might 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. 

RSU-4

< PREPARATION >

PREPARATION

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.

Commercial Service Tool

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Tool number
(Kent-Moore No.)
Tool name

Description

ST3127S000
(J-25765-A)
Preload gauge

Measuring rotating torque of ball joint

ZZA0806D

Tool name

Description

Power tool

Loosening bolts and nuts

PBIC0190E

REAR SUSPENSION ASSEMBLY

RSU-5

< ON-VEHICLE MAINTENANCE >

C

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RSU

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ON-VEHICLE MAINTENANCE

REAR SUSPENSION ASSEMBLY

Inspection and Adjustment

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MOUNTING INSPECTION

Make sure the mounting conditions (looseness, backlash) of each component and component conditions
(wear, damage) are normal.

BALL JOINT AXIAL END PLAY

Measure axial end play by placing and moving up/down with an iron bar or equivalent between suspension
arm and axle assembly.

CAUTION:

Be careful not to damage ball joint boot.

SHOCK ABSORBER

Check for oil leakage, damage and replace if malfunction is detected. 

Standard

End play 

: Refer to 

RSU-28, "Ball Joint"

.