Infiniti I35 (A33). Manual — part 99
Noise, Vibration and Harshness (NVH)
Troubleshooting
=NHAX0004
NVH TROUBLESHOOTING CHART
NHAX0004S01
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
Reference page
—
AX-13
—
AX-5,
19
—
Refer
to
DRIVE
SHAFT
in
this
chart.
Refer
to
AXLE
in
this
chart.
SU-4
BR-6
Possible cause and
SUSPECTED PARTS
Excessive
joint
angle
Joint
sliding
resistance
Imbalance
Improper
installation,
looseness
Parts
interference
Wheel
bearing
damage
DRIVE
SHAFT
AXLE
SUSPENSION
TIRES
ROAD
WHEEL
BRAKES
STEERING
Symptom
DRIVE SHAFT
Noise, Vibration
×
×
×
×
×
×
×
×
Shake
×
×
×
×
×
×
×
×
AXLE
Noise
×
×
×
×
×
×
×
×
Shake
×
×
×
×
×
×
×
×
Vibration
×
×
×
×
×
×
Shimmy
×
×
×
×
×
×
×
Judder
×
×
×
×
×
×
Poor quality ride or
handling
×
×
×
×
×
×
×
: Applicable
SMA525A
On-vehicle Service
FRONT AXLE PARTS
NHAX0005
Check front axle and front suspension parts for excessive play,
cracks, wear or other damage.
I
Shake each front wheel to check for excessive play.
I
Make sure that cotter pin is inserted.
I
Retighten all axle and suspension nuts and bolts to the speci-
fied torque.
Tightening torque:
Refer to SU-9, “FRONT SUSPENSION”.
GI
MA
EM
LC
EC
FE
AT
SU
BR
ST
RS
BT
HA
SC
EL
IDX
FRONT AXLE
Noise, Vibration and Harshness (NVH) Troubleshooting
AX-3
SFA646A
FRONT WHEEL BEARING
NHAX0006
I
Check that wheel bearings operate smoothly.
I
Check axial end play.
Axial end play:
Less than 0.05 mm (0.0020 in)
If out of specification or wheel bearing does not turn smoothly,
replace wheel bearing assembly.
Refer to “Wheel Hub and Knuckle”, “FRONT AXLE”, AX-5.
SFA108A
DRIVE SHAFT
NHAX0007
Check for grease leakage or other damage.
FRONT AXLE
On-vehicle Service (Cont’d)
AX-4
Wheel Hub and Knuckle
COMPONENTS
=NHAX0008
SAX024
1.
Drive shaft
2.
Snap ring
3.
Knuckle
4.
Baffle plate
5.
ABS sensor
6.
Wheel bearing assembly
7.
Snap ring
8.
Hub bolt
9.
Wheel hub
10. Wheel bearing lock nut
11. Cotter pin
12. Brake disc
13. Wheel nut
REMOVAL
NHAX0009
CAUTION:
Before removing the front axle assembly, disconnect the ABS
wheel sensor from the assembly. Then move it away from the
front axle assembly area.
Failure to do so may result in damage to the sensor wires and
the sensor becoming inoperative.
1.
Remove wheel bearing lock nut.
SFA898A
2.
Remove brake caliper assembly and rotor.
Brake hose need not be disconnected from brake caliper. In
this case, suspend caliper assembly with wire so as not to
stretch brake hose. Be careful not to depress brake pedal, or
piston will pop out.
Make sure brake hose is not twisted.
GI
MA
EM
LC
EC
FE
AT
SU
BR
ST
RS
BT
HA
SC
EL
IDX
FRONT AXLE
Wheel Hub and Knuckle
AX-5
SFA247B
3.
Separate tie-rod from knuckle with Tool.
Install stud nut on stud bolt to prevent damage to stud bolt.
SFA651A
4.
Separate drive shaft from knuckle by lightly tapping it. If it is
hard to remove, use a puller.
I
Cover boots with shop towel so as not to damage them
when removing drive shaft.
I
When removing drive shaft, do not exceed more than 22°
angle on drive shaft joint portion. Or, in doing so, try not
to excessively stretch the slide joint.
I
Do not lift the drive shaft with axle while holding only the
middle axle.
I
After tightening drive shaft or side shaft with bolts, do not
lift the drive shaft while holding only the middle axle.
I
Do not put down drive shaft while it is inserted into tran-
saxle without supporting the middle axle, wheel side joint
etc.
SFA113A
5.
Loosen lower ball joint tightening nut.
6.
Separate knuckle from lower ball joint stud with Tool.
7.
Remove knuckle from transverse link.
SFA652A
INSTALLATION
NHAX0010
1.
Install knuckle with wheel hub.
When installing knuckle to strut, be sure to hold bolts and
tighten nuts.
: 125 - 155 N·m (13 - 15 kg-m, 93 - 114 ft-lb)
I
Before tightening, apply oil to threaded portion of drive
shaft.
I
When removing drive shaft, do not exceed more than 22°
angle on drive shaft joint portion. Or, in doing so, try not
to excessively stretch the slide joint.
FRONT AXLE
Wheel Hub and Knuckle (Cont’d)
AX-6
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