Infiniti Q45 (FY33). Manual — part 515
REAR AXLE &
REAR SUSPENSION
CONTENTS
PRECAUTIONS AND PREPARATION. . . . . . . 2
Precautions . . . . . . . . . . . . . . . . ..2
Special Service Tools . . . . . . . . . . . . ..2
Commercial Service Tools . . . . . . . . . . ...3
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING . . . . . . . . . . . . . .4
NVH Troubleshooting Chart. . . . . . . . . . .4
REAR SUSPENSION SYSTEM. . . . . . . . . ...5
ON-VEHICLE SERVICE . . . . . . . . . . . . ..6
Rear Axle and Rear Suspension Parts . . . . . ...6
Rear Wheel Bearing . . . . . . . . . . . . . 7
Rear Wheel Alignment. . . . . . . . . . . . .7
Drive Shaft . . . . . . . . . . . . . . . . ...8
REAR AXLE. . . . . . . . . . . . . . . . . .9
Wheel Hub and Axle Housing . . . . . . . . . .9
Drive Shaft . . . . . . . . . . . . . . . . .15
REAR SUSPENSION. . . . . . . . . . . . . .19
Removal and Installation . . . . . . . . . . ...20
Coil Spring and Shock Absorber . . . . . . . ...21
Multi-link and Lower Ball Joint. . . . . . . . ...22
Stabilizer Bar . . . . . . . . . . . . . . . .25
SERVICE DATA AND SPECIFICATIONS (SDS) . . ..26
General Specifications. . . . . . . . . . . ...26
Inspection and Adjustment . . . . . . . . . . 26
GI
MA
EM
LC
EC
FE
AT
PD
FA
BR
ST
RS
BT
HA
EL
IDX
SBR686C
Precautions
I
When installing rubber parts, final tightening must be car-
ried out under unladen condition* with tires on ground.
*
Fuel, radiator coolant and engine oil full. Spare tire,
jack, hand tools and mats in designated positions.
I
Use flare nut wrench when removing or installing brake
lines.
I
After installing removed suspension parts, check wheel
alignment and adjust if necessary.
I
Always torque brake lines when installing.
I
Do not jack up at the lower arm.
Special Service Tools
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
Description
ST35652000
(
—
)
Shock absorber
attachment
NT145
Fixing strut assembly
ST30031000
(J22912-01)
Bearing puller
NT412
Removing inner race of wheel bearing
a: 50 mm (1.97 in) dia.
ST38280000
(
—
)
Arm bushing remover
NT157
Removing and installing rear axle
housing bushing
IM23600800
(
—
)
Attachment
NT148
Measure rear wheel alignment
a: Screw M24 x 1.5
b: 35 mm (1.38 in) dia.
c: 65 mm (2.56 in) dia.
d: 56 mm (2.20 in)
e: 12 mm (0.47 in)
ST29020001
(24319-01)
Pitman arm puller
NT694
Removing lower ball joint
a: 34 mm (1.34 in)
b: 6.5 mm (0.256 in)
c: 61.5 mm (2.421 in)
PRECAUTIONS AND PREPARATION
RA-2
Commercial Service Tools
Tool name
Description
q
1
Flare nut crowfoot
q
2
Torque wrench
NT223
Removing and installing each brake piping
Rear wheel bearing
drift
NT065
Installing wheel bearing
a: 76 mm (2.99 in) dia.
b: 68.5 mm (2.697 in) dia.
Rear drive shaft plug
seal drift
NT065
Installing rear drive shaft plug seal
a: 78 mm (3.07 in) dia.
b: 72 mm (2.83 in) dia.
Rear axle housing ball
joint drift
NT164
Removing ball joint
a: 28 mm (1.10 in) dia.
b: 20 mm (0.79 in) dia.
c: 43 mm (1.69 in) dia.
d: 40 mm (1.57 in) dia.
Rear axle housing ball
joint drift
NT164
Installing ball joint
a: 43 mm (1.69 in) dia.
b: 33 mm (1.30 in) dia.
c: 40 mm (1.57 in) dia.
d: 30 mm (1.18 in) dia.
Spring compressor
NT717
Removing and installing coil spring
GI
MA
EM
LC
EC
FE
AT
PD
FA
BR
ST
RS
BT
HA
EL
IDX
PRECAUTIONS AND PREPARATION
RA-3
NVH Troubleshooting Chart
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
Reference page
—
—
RA-6
—
—
—
RA-5,
19
RA-25
NVH
in
PD
section
NVH
in
NVH
in
Refer
to
REAR
AXLE
AND
REAR
SUSPENSION
in
this
chart.
NVH
in
NVH
in
Refer
to
DRIVE
SHAFT
in
this
chart.
NVH
in
NVH
in
ST
section
Possible cause and
SUSPECTED PARTS
Excessive
joint
angle
Joint
sliding
resistance
Imbalance
Improper
installation,
looseness
Shock
absorber
deformation,
damage
or
deflection
Bushing
or
mounting
deterioration
Parts
interference
Spring
fatigue
Suspension
looseness
Incorrect
wheel
alignment
Stabilizer
bar
fatigue
Wheel
bearing
damage
PROPELLER
SHAFT
DIFFERENTIAL
FRONT
AXLE
AND
FRONT
SUSPENSION
REAR
AXLE
AND
REAR
SUSPENSION
TIRES
ROAD
WHEEL
DRIVE
SHAFT
BRAKES
STEERING
Symptom
DRIVE
SHAFT
Noise, Vibration
X
X
X
X
X
X
X
X
X
X
Shake
X
X
X
X
X
X
X
X
X
REAR
AXLE AND
REAR
SUSPEN-
SION
Noise
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Shake
X
X
X
X
X
X
X
X
X
X
X
X
Vibration
X
X
X
X
X
X
X
X
X
X
Shimmy
X
X
X
X
X
X
X
X
X
X
Judder
X
X
X
X
X
X
X
X
Poor quality ride or handling
X
X
X
X
X
X
X
X
X
X
X
X: Applicable
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
RA-4
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