Nissan Altima L32. Manual - part 142

BR-6

< FUNCTION DIAGNOSIS >

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

FUNCTION DIAGNOSIS

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting Chart

INFOID:0000000004204154

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

×: Applicable

Reference page

BR-7

, 

BR-8

BR-7

, 

BR-8

BR-7

, 

BR-8

—

—

BR-7

, 

BR-8

—

—

—

BR-7

, 

BR-8

—

F

AX-2

, 

RAX-2

FSU-2

FA

X

-2

  

(front axle), 

  

RAX-2

  (re

ar 

ax

le)

WT

-6

1,

 "

NV

H T

rou

bl

es

ho

oti

ng

 Cha

rt

"

WT

-6

1,

 "

NV

H T

rou

bl

es

ho

oti

ng

 Cha

rt

"

F

AX-2,

 "

NVH T

ro

ub

les

ho

ot

ing

 Ch

art

"

ST

-3, "

NVH T

ro

ubl

es

ho

ot

ing

 Cha

rt

"

Possible cause and
SUSPECTED PARTS

Pad

s - 

da

ma

ge

d

Pad

s 

- un

ev

en

 we

ar

Sh

im

s da

ma

ge

d

Roto

r im

b

ala

nc

e

Ro

to

r da

ma

ge

Rotor runout

Roto

r d

efo

rma

tio

n

Roto

r d

efl

ectio

n

Rotor rust

Roto

r th

ic

kn

es

s 

va

ria

tio

n

Drum

 ou

t o

f ro

un

d

WHEEL HUB

SUSPENSI

ON 

AXLE 

TIRES

ROA

D

 WHEEL

D

R

IV

E

 SH

AF

T

STEERI

N

G

Symptom

Noise

×

×

×

×

×

×

×

×

×

×

Shake

×

×

x

×

×

×

×

×

Shimmy, Shudder

×

×

×

×

×

×

×

x

×

×

×

×

FRONT DISC BRAKE

BR-7

< BASIC INSPECTION >

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BASIC INSPECTION

FRONT DISC BRAKE

BRAKE PAD
BRAKE PAD : Inspection

INFOID:0000000004204160

PAD WEAR

Check pad thickness from an inspection hole on cylinder body.

Check using a scale if necessary.

DISC ROTOR
DISC ROTOR : Inspection

INFOID:0000000004204162

VISUAL

Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace if necessary.

RUNOUT

1. Attach the disc rotor to wheel hub using wheel nuts at two or

more positions. 

2. Inspect runout using a dial gauge. Set the dial gauge to mea-

sure at 10 mm (0.39 in) inside the disc edge.

NOTE:

Before measuring, make sure that wheel bearing axial end play

is within the specification. Refer to 

FAX-6, "Inspection"

.

3. When runout exceeds limit value, displace mounting positions of

disc rotor by one hole. And then find a position of the minimum value for runout.

4. If runout is outside the specified value after performing the above operation, turn the disc rotor using Tool.

THICKNESS

Check thickness of the disc rotor using a micrometer. Replace disc

rotor if thickness is under the wear limit.

Standard thickness

: Refer to 

BR-47, "Front Disc 

Brake"

.

Wear limit thickness

: Refer to 

BR-47, "Front Disc 

Brake"

.

BRA0010D

Maximum runout : Refer to 

BR-47, "Front Disc Brake"

.

(with it attached to the vehicle)

Tool number

: 38-PFM90.5

BRA0580D

Standard thickness

: Refer to 

BR-47, "Front 

Disc Brake"

.

Wear limit thickness

: Refer to 

BR-47, "Front 

Disc Brake"

.

Thickness variation
(Measured at 8 positions)

: Refer to 

BR-47, "Front 

Disc Brake"

.

SBR020B

BR-8

< BASIC INSPECTION >

REAR DISC BRAKE

REAR DISC BRAKE

BRAKE PAD
BRAKE PAD : Inspection

INFOID:0000000004204163

PAD WEAR

Check pad thickness from an inspection hole on cylinder body.

Check using a scale if necessary.

DISC ROTOR
DISC ROTOR : Inspection

INFOID:0000000004204164

VISUAL

Check surface of disc rotor for uneven wear, cracks, and serious damage. Replace if necessary.

RUNOUT

1. Attach the disc rotor to wheel hub using wheel nuts at two or

more positions. 

2. Inspect runout using dial gauge. Set the dial gauge to measure

at 10 mm (0.39 in) inside disc edge.

NOTE:

Before measuring, make sure that wheel bearing axial end play

is within the specification. Refer to 

FAX-6, "Inspection"

.

3. When runout exceeds limit value, displace mounting positions of

disc rotor by one hole. And then find a position of the minimum value for runout. 

4. If runout is outside the specified value after performing the above operation, turn the disc rotor using Tool.

THICKNESS

Check the thickness of the disc rotor using a micrometer. Replace

disc rotor if the thickness is under the wear limit.

Standard thickness

: Refer to 

BR-47, "Rear Disc 

Brake"

.

Wear limit thickness

: Refer to 

BR-47, "Rear Disc 

Brake"

.

BRA0010D

Maximum runout

: Refer to 

BR-47, "Rear Disc Brake"

.

(with it attached to the vehicle)

Tool number

: 38-PFM90.5

BRA0697D

Standard thickness

: Refer to 

BR-47, "Rear 

Disc Brake"

.

Wear limit thickness

: Refer to 

BR-47, "Rear 

Disc Brake"

.

Thickness variation
(measured at 8 positions)

: Refer to 

BR-47, "Rear 

Disc Brake"

.

SFIA2284E

BRAKE BOOSTER

BR-9

< BASIC INSPECTION >

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BRAKE BOOSTER

Inspection

INFOID:0000000004204165

OPERATION

With engine stopped, change vacuum to atmospheric pressure by

depressing brake pedal several times. Then with brake pedal fully

depressed, start engine and when vacuum pressure reaches the

standard, make sure that clearance between brake pedal and floor

panel decreases.

AIR TIGHT

• Run engine at idle for approximately 1 minute, and stop it after

applying vacuum to booster. Depress brake pedal normally to

change vacuum to atmospheric pressure. Make sure that distance

at intervals of 5 seconds between brake pedal and floor panel

gradually increases.

• Depress brake pedal while engine is running, and stop engine with pedal depressed. The pedal stroke

should not change after holding pedal down for 30 seconds.

BRA0037D

SBR365AA