Infiniti I30 (A33). Manual — part 106
NHBR0005
NVH Troubleshooting Chart
NHBR0005S01
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
Reference page
—
—
BR-26,
32
—
—
—
NVH
in
AX
section
NVH
in
AX
section
NVH
in
SU
section
NVH
in
SU
section
NVH
in
SU
section
NVH
in
ST
section
Possible cause and
SUSPECTED PARTS
Pads
-
damaged
Pads
-
uneven
wear
Shims
damaged
Rotor
imbalance
Rotor
damage
Rotor
runout
Rotor
deformation
Rotor
deflection
Rotor
rust
Rotor
thickness
variation
DRIVE
SHAFT
AXLE
SUSPENSION
TIRES
ROAD
WHEEL
STEERING
Symptom
BRAKE
Noise
X
X
X
X
X
X
X
X
X
Shake
X
X
X
X
X
X
X
Shimmy, Judder
X
X
X
X
X
X
X
X
X
X
X
X
X: Applicable
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
BR-7
SBR451D
Checking Brake Fluid Level
NHBR0006
I
Check fluid level in reservoir tank. It should be between Max
and Min lines on reservoir tank.
I
If fluid level is extremely low, check brake system for leaks.
I
Release parking brake lever and see if brake warning lamp
goes off. If not, check brake system for leaks.
SBR389C
Checking Brake Line
NHBR0007
CAUTION:
If leakage occurs around joints, retighten or, if necessary,
replace damaged parts.
1.
Check brake lines (tubes and hoses) for cracks, deterioration
or other damage. Replace any damaged parts.
2.
Check for oil leakage by fully depressing brake pedal while
engine is running.
SBR419C
Changing Brake Fluid
NHBR0008
CAUTION:
I
Refill with new brake fluid “DOT 3”.
I
Always keep fluid level higher than minimum line on res-
ervoir tank.
I
Never reuse drained brake fluid.
I
Be careful not to splash brake fluid on painted areas; it
may cause paint damage. If brake fluid is splashed on
painted areas, wash it away with water immediately.
1.
Clean inside of reservoir tank, and refill with new brake fluid.
2.
Connect a vinyl tube to each air bleeder valve.
3.
Drain brake fluid from each air bleeder valve by depressing
brake pedal.
4.
Refill until brake fluid comes out of each air bleeder valve.
Use same procedure as in bleeding hydraulic system to refill
brake fluid. Refer to “Bleeding Brake System”, BR-9.
Brake Burnishing Procedure
NHBR0036
Burnish the brake contact surfaces according to the following pro-
cedure after refinishing or replacing drums or rotors, after replac-
ing pads or linings, or if a soft pedal occurs at very low mileage.
CAUTION:
Only perform this procedure under safe road and traffic con-
ditions. Use extreme caution.
1.
Drive the vehicle on a straight smooth road at 50 km/h (31
MPH).
2.
Use medium brake pedal/foot effort to bring the vehicle to a
complete stop from 50 km/h (31 MPH). Adjust brake pedal/foot
ON-VEHICLE SERVICE
Checking Brake Fluid Level
BR-8
pressure such that vehicle stopping time equals 3 to 5 sec-
onds.
3.
To cool the brake system, drive the vehicle at 50 km/h (31
MPH) for 1 minute without stopping.
4.
Repeat steps 1 to 3, 10 times or more to complete the burnish-
ing procedure.
SBR995
Bleeding Brake System
NHBR0009
CAUTION:
I
Carefully monitor brake fluid level at master cylinder dur-
ing bleeding operation.
I
Fill reservoir with new brake fluid “DOT 3”. Make sure it is
full at all times while bleeding air out of system.
I
Place a container under master cylinder to avoid spillage
of brake fluid.
I
For models with ABS, turn ignition switch OFF and dis-
connect ABS actuator connectors or battery ground cable.
SBR419C
I
Bleed air in the following order.
Right rear brake
,
Left front brake
,
Left rear brake
,
Right
front brake
1.
Connect a transparent vinyl tube to air bleeder valve.
2.
Fully depress brake pedal several times.
3.
With brake pedal depressed, open air bleeder valve to release
air.
4.
Close air bleeder valve.
5.
Release brake pedal slowly.
6.
Repeat steps 2. through 5. until clear brake fluid comes out of
air bleeder valve.
GI
MA
EM
LC
EC
FE
AT
AX
SU
ST
RS
BT
HA
SC
EL
IDX
ON-VEHICLE SERVICE
Brake Burnishing Procedure (Cont’d)
BR-9
Hydraulic Circuit
NHBR0010
SBR661E
MBR151AB
SBR992
Removal
NHBR0011
CAUTION:
I
Be careful not to splash brake fluid on painted areas; it
may cause paint damage. If brake fluid is splashed on
painted areas, wash it away with water immediately.
I
All hoses must be free from excessive bending, twisting
and pulling.
1.
Connect vinyl tube to air bleeder valve.
2.
Drain brake fluid from each air bleeder valve by depressing
brake pedal.
BRAKE HYDRAULIC LINE
Hydraulic Circuit
BR-10
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