Infiniti FX35, FX50 (S51). Manual - part 570

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

DLN-115

< SYMPTOM DIAGNOSIS >

[REAR PROPELLER SHAFT: 3S80A-R]

C

E

F

G

H

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A

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DLN

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SYMPTOM DIAGNOSIS

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting Chart

INFOID:0000000005249154

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

×

: Applicable

Reference

DL

N-1

17,

 "

In

sp

ectio

n

"

DLN

-12

1,

 "

Inspe

c

ti

on

"

—

DLN

-12

1,

 "

Inspe

c

ti

on

"

—

DL

N-1

17,

 "

In

sp

ectio

n

"

DL

N-1

17,

 "

In

sp

ectio

n

"

NVH in DLN section.

NVH in F

AX, 

RAX, FSU and 

R

S

U section.

NVH in WT section.

NVH in WT section.

NVH in RAX

 section.

NVH in B

R

 section.

NVH in S

T

 section.

Possible cause and SUSPECTED PARTS

Un

ev

en

 ro

ta

ti

ng

 t

o

rqu

e

Ce

nt

er b

e

a

rin

g i

mp

rop

er i

n

s

ta

lla

ti

o

n

Exc

es

si

ve

 c

en

ter be

a

rin

g a

xi

al

 en

d pl

a

y

Cen

te

r be

ari

n

g

 mo

un

tin

g

 (ins

ul

at

or) c

rac

ks

, d

a

m

a

ge 

or d

e

te

rio

rat

ion

Ex

ce

ss

iv

e joi

nt an

gle

Rot

a

ti

on

 im

ba

la

nc

e

Ex

ce

ss

iv

e run

out

DIFF

ERENTIAL

AXLE AND S

U

S

PENSION

TIRE

ROAD WHEEL

DRIVE SHAFT

BRAKE

STE

E

RING

Symptom

Noise

×

×

×

×

×

×

×

×

×

×

×

×

×

×

Shake

×

×

×

×

×

×

×

×

Vibration

×

×

×

×

×

×

×

×

×

×

×

DLN-116

< PREPARATION >

[REAR PROPELLER SHAFT: 3S80A-R]

PREPARATION

PREPARATION

PREPARATION

Commercial Service Tools

INFOID:0000000005249155

Tool name

Description

Power tool

Loosening bolts and nuts

PBIC0190E

REAR PROPELLER SHAFT

DLN-117

< PERIODIC MAINTENANCE >

[REAR PROPELLER SHAFT: 3S80A-R]

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PERIODIC MAINTENANCE

REAR PROPELLER SHAFT

Inspection

INFOID:0000000005249156

NOISE

• Check the propeller shaft tube surface for dents or cracks. If damaged, replace propeller shaft assembly.
• If center bearing is noisy or damaged, replace propeller shaft assembly.

VIBRATION

If vibration is present at high speed, inspect propeller shaft runout first.
1.

With a dial indicator, measure propeller shaft runout at runout
measuring points by rotating final drive companion flange with
hands.

2.

If runout still exceeds specifications, separate propeller shaft at
final drive companion flange; then rotate companion flange 120,
240 degrees and install propeller shaft.

3.

Check runout again. If runout still exceeds specifications,
replace propeller shaft assembly. 

4.

Check the vibration by driving vehicle.

RUNOUT MEASURING POINT

Propeller shaft runout measuring point (Point “ ”).

Limit

Propeller shaft runout

: Refer to 

DLN-122, "Pro-

peller Shaft Runout"

.

SDIA1087E

: Vehicle front

Standard

A

: 192 mm (7.56 in)

B

: 172 mm (6.77 in)

C

: 172 mm (6.77 in)

JSDIA0169ZZ

DLN-118

< REMOVAL AND INSTALLATION >

[REAR PROPELLER SHAFT: 3S80A-R]

REAR PROPELLER SHAFT

REMOVAL AND INSTALLATION

REAR PROPELLER SHAFT

Exploded View

INFOID:0000000005249157

Removal and Installation

INFOID:0000000005249158

REMOVAL

1.

Shift the transaxle to the neutral position, and then release the parking brake.

2.

Remove the center muffler and exhaust front tube with power tool. Refer to 

EX-5, "Exploded View"

.

3.

Remove the heat plate (1).

1.

Clip

2.

Center bearing mounting bracket 
(upper)

3.

Propeller shaft assembly

4.

Center bearing mounting bracket 
(lower)

: Vehicle front

Refer to 

GI-4, "Components"

 for symbols in the figure.

JPDID0236GB

JPDID0184ZZ