Infiniti QX56 (Z62). Manual — part 726
FAX-6
< SYMPTOM DIAGNOSIS >
[2WD]
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
INFOID:0000000006225415
Use chart below to find the cause of the symptom. If necessary, repair or replace these parts.
×
: Applicable
Reference
—
NVH in
F
AX an
d F
S
U
s
e
c
ti
o
ns
NVH in WT section
NVH in WT section
NVH in B
R
section
NVH in S
T
section
Possible cause and SUSPECTED PARTS
Im
p
rop
er i
n
s
ta
lla
tio
n
,
lo
os
en
es
s
P
a
rt
s interference
W
he
el be
arin
g da
ma
ge
F
R
ONT
AXLE AND FRONT S
U
SPENSION
TI
RE
ROAD W
H
EEL
BR
AK
E
S
T
EERING
Symptom
FRONT AXLE
Noise
×
×
×
×
×
×
×
×
Shake
×
×
×
×
×
×
×
×
Vibration
×
×
×
×
×
×
Shimmy
×
×
×
×
×
×
×
Judder
×
×
×
×
×
×
Poor quality ride or handling
×
×
×
×
×
FRONT WHEEL HUB AND KNUCKLE
FAX-7
< PERIODIC MAINTENANCE >
[2WD]
C
E
F
G
H
I
J
K
L
M
A
B
FAX
N
O
P
PERIODIC MAINTENANCE
FRONT WHEEL HUB AND KNUCKLE
Inspection
INFOID:0000000006225416
MOUNTING INSPECTION
Make sure that the mounting conditions (looseness, backlash) of each component and component conditions
(wear, damage) are normal.
WHEEL BEARING INSPECTION
• Move wheel hub and bearing assembly in the axial direction by hand. Make sure there is no looseness of
wheel hub and bearing assembly.
• Rotate wheel hub and bearing assembly and make sure that is no unusual noise or other irregular condi-
tions. If there is any of irregular conditions, replace wheel hub and bearing assembly.
Axial end play
: Refer to
FAX-10, "Wheel Hub and Bearing Assembly"
.
FAX-8
< REMOVAL AND INSTALLATION >
[2WD]
FRONT WHEEL HUB AND KNUCKLE
REMOVAL AND INSTALLATION
FRONT WHEEL HUB AND KNUCKLE
Exploded View
INFOID:0000000006225418
Removal and Installation
INFOID:0000000006225419
REMOVAL
1.
Remove tires with power tool. Refer to
WT-64, "Removal and Installation"
.
2.
Remove brake hose bracket. Refer to
BR-23, "FRONT : Removal and Installation"
3.
Remove caliper assembly mounting bolts. Hang caliper assembly in a place where it will not interfere with
work. Refer to
BR-37, "BRAKE CALIPER ASSEMBLY : Removal and Installation"
CAUTION:
Never depress brake pedal while brake caliper is removed.
4.
Remove disc rotor.
CAUTION:
• Put matching marks on the wheel hub and bearing assembly and the disc rotor before removing
the disc rotor.
• Never drop disc rotor.
5.
Remove wheel sensor harness. Refer to
BRC-134, "FRONT WHEEL SENSOR : Removal and Installa-
CAUTION:
Never pull on wheel sensor harness.
6.
Remove steering outer socket. Refer to
ST-42, "Removal and Installation"
7.
Set suitable jack under lower link.
1.
Steering knuckle
2.
Cotter pin
3.
Splash guard
4.
Hub bolt
5.
Wheel hub and bearing assembly
6.
Disc rotor
Refer to
for symbols in the figure.
JPDIF0294GB
FRONT WHEEL HUB AND KNUCKLE
FAX-9
< REMOVAL AND INSTALLATION >
[2WD]
C
E
F
G
H
I
J
K
L
M
A
B
FAX
N
O
P
8.
Remove shock absorber mounting bolt from lower link. Refer to
FSU-10, "Removal and Installation"
9.
Separate upper link from steering knuckle, using the ball joint remover (commercial service tool), and
remove upper link.
CAUTION:
• Temporarily tighten the nut to prevent damage to threads and to prevent the ball joint remover
from suddenly coming off.
• Never damage ball joint boot.
10. Remove wheel hub and bearing assembly, and then remove splash guard.
11. Remove lower link from steering knuckle.
CAUTION:
Never damage ball joint boot.
12. Remove steering knuckle.
13. Remove hub bolts (1) from wheel hub and bearing assembly,
using the ball joint remover (A) (commercial service tool).
CAUTION:
• Remove hub bolt only when necessary.
• Never hammer the hub bolt to avoid impact to the wheel
hub and bearing assembly.
• Pull out the hub bolt in a direction perpendicular to the
wheel hub and bearing assembly.
14. Perform inspection after removal. Refer to
INSTALLATION
Note the following, and install in the reverse order of removal.
• Place a suitable washer (A) as shown in the figure to install the hub
bolts (1) by using the tightening force of the nut (B).
CAUTION:
• Check that there is no clearance between wheel hub and
bearing assembly, and hub bolt.
• Never reuse hub bolt.
• Perform the final tightening of each of parts under unladen condi-
tions, which were removed when removing wheel hub and bearing
assembly and steering knuckle.
• Never reuse cotter pin.
• Perform inspection after installation. Refer to
Inspection
INFOID:0000000006225420
INSPECTION AFTER REMOVAL
Check components for deformation, cracks, and other damage. Replace it if necessary.
Ball Joint Inspection
Check boots of lower link and steering outer socket ball joint for breakage, axial play, and torque. Refer to
INSPECTION AFTER INSTALLATION
1.
Check wheel sensor harness for proper connection. Refer to
BRC-134, "FRONT WHEEL SENSOR :
.
2.
Check the wheel alignment. Refer to
.
3.
Adjust neutral position of steering angle sensor. Refer to
.
JPDIF0299ZZ
JPDIF0300ZZ
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