Nissan Altima L32. Instruction — 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
,
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,
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—
,
—
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,
—
,
(front axle),
(re
ar
ax
le)
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 >
C
D
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A
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BR
N
O
P
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
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
.
Wear limit thickness
: Refer to
.
BRA0010D
Maximum runout : Refer to
.
(with it attached to the vehicle)
Tool number
: 38-PFM90.5
BRA0580D
Standard thickness
: Refer to
.
Wear limit thickness
: Refer to
.
Thickness variation
(Measured at 8 positions)
: Refer to
.
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
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
.
Wear limit thickness
: Refer to
.
BRA0010D
Maximum runout
: Refer to
(with it attached to the vehicle)
Tool number
: 38-PFM90.5
BRA0697D
Standard thickness
: Refer to
.
Wear limit thickness
: Refer to
.
Thickness variation
(measured at 8 positions)
.
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
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