Infiniti Q45. Manual — part 756
WHEEL HUB
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WHEEL HUB
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On-Vehicle Inspection and Service
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Make sure that the mounting conditions (looseness, back lash) of each component and component conditions
(wear, damage) are normal.
WHEEL BEARING INSPECTION
●
Move wheel hub in the axial direction by hand. Make sure there is no looseness of wheel bearing.
●
Rotate wheel hub and make sure there are no unusual noise or other irregular conditions. If there are any
irregular conditions, replace wheel bearings.
Removal and Installation
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COMPONENT
REMOVAL
1.
Remove tire from vehicle with a power tool.
2.
Remove brake caliper with a power tool. Hang it in a place where it will not interfere with work. Refer to
NOTE:
Avoid depressing brake pedal while brake caliper is removed.
3.
Remove cotter pin. Then remove lock nut from drive shaft.
4.
Remove disc rotor and remove parking cable and parking brake shoe from back plate. Refer to
5.
Remove fixing bolts and nuts in the axle side of radius rod and front lower link.
6.
Remove fixing bolt and nut in the axle side of rear lower link. Then remove coil spring. Refer to
"REAR LOWER LINK & COIL SPRING"
7.
Remove fixing bolt and nut in the axle side of shock absorber.
8.
Using a puller (suitable tool), remove axle from drive shaft.
CAUTION:
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When removing axle, do not apply an excessive angle to drive shaft joint. Also be careful not to
excessively extend slide joint.
Axial end play
: 0.05 mm (0.002 in) or less
1.
Drive shaft
2.
Dust shield
3.
Bushing
4.
Axle
5.
Back plate
6.
Anchor block
7.
Wheel bearing
8.
Wheel hub
9.
Lock nut
10. Cotter pin
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RAX-6
WHEEL HUB
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Do not allow drive shaft to hang down without support for housing (or joint sub-assembly),
shaft, and the other parts.
9.
Remove suspension arm and cotter pin at axle, then loosen mounting nut.
10. Use the ball joint remover (suitable tool) to remove suspension arm from axle. Be careful not to damage
ball joint boot.
CAUTION:
Tighten temporarily mounting nut to prevent damage to threads and to prevent ball joint remover
(suitable tool) from coming off.
11. Remove axle from vehicle.
INSPECTION AFTER REMOVAL
Ball Joint Inspection
Check for boot breakage, axial looseness, and torque of suspension arm ball joint. Refer to
INSTALLATION
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Refer to
RAX-5, "Removal and Installation"
for tightening torque. Install in the reverse order of the
removal.
NOTE:
Refer to component parts location and do not reuse non-reusable parts.
●
Perform the final tightening of installation position of suspension links (rubber bushing) under unladen
conditions with tires on level ground, check wheel alignment. Refer to
RSU-5, "Wheel Alignment Inspec-
.
●
After adjusting wheel alignment, adjust neutral position of steering angle sensor. Refer to
ment of Steering Angle Sensor Neutral Position"
.
Disassembly and Assembly
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DISASSEMBLY
Wheel Bearing
CAUTION:
Do not disassemble if wheel bearing has no trouble.
1.
Remove wheel bearing fixing bolts and anchor block fixing nuts, and remove wheel hub and bearing
assembly, back plate and anchor block from axle.
2.
Using the drift (SST) and a puller (suitable tool), press wheel
hub out to remove from wheel bearing.
3.
Using the drift (SST) and a puller (suitable tool), pull wheel bear-
ing outer side inner race out to remove from wheel hub.
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WHEEL HUB
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Bushing
Using a drift (suitable tool), remove each bushing from axle.
INSPECTION AFTER DISASSEMBLY
Wheel Hub
Inspect wheel hub for deformation, cracks, and other damage. If any irregular conditions are found, replace
wheel hub.
Axle
Inspect axle for deformation, cracks, and other damage. If any irregular conditions are found, replace axle.
Back Plate
Inspect back plate for deformation, cracks, and other damage. If any irregular conditions are found, replace
back plate.
ASSEMBLY
Bushing
Using a drift (suitable tool) to install each bushing onto axle.
Wheel Bearing
1.
Press fit a wheel hub into wheel bearing with the drift (SST).
CAUTION:
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Using the drift (SST), press hub into wheel bearing while
holding securely inner side wheel bearing inner race.
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Wheel bearing cannot be reused. Do not reuse it.
NOTE:
Final press load guideline 49, 033 N (5, 000 kg, 11, 000 lb)
2.
Install back plate and wheel hub·bearing assembly.
3.
Install anchor block onto axle.
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WHEEL HUB
INSPECTION AFTER ASSEMBLY
1.
With wheel bearing pressed into axle, apply 49, 033 N (5, 000 kg, 11, 000 lb) to wheel hub and rotate both
clockwise and counterclockwise 10 times to minimize resistance.
2.
Attach spring balance in the position shown in the figure and pull
at a rate of 10
±
2 rpm to measure rotating torque with the hub
flange facing horizontally.
Standard value
Rotating torque:
Less than 1.49 N·m (0.15 kg-m, 13 in-lb)
Spring balance reading:
Less than 12.8 N (1.31 kg, 2.88 lb)
SDIA2655E
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