Engine JAC HFC4DA1-2C. Service manual — part 163
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WT
WT
WT Wheels
Wheels
Wheels
Wheels and
and
and
and Tires
Tires
Tires
Tires
- 177 -
Fault
Fault
Fault
Fault Diagnosis
Diagnosis
Diagnosis
Diagnosis
Common
Common
Common
Common fault
fault
fault
fault diagnosis
diagnosis
diagnosis
diagnosis table
table
table
table
Fault Symptom
Possible Cause
Solution
Steering wheel circular vibration
Excessive deflection of wheel and rim
Looseness of wheel nut
Wheel unbalance
Uneven wear of tire
Under-pressure of tire
Damage or wear of front wheel bearing
Steering system fault
Suspension system fault
Replace
Tighten
Adjust
Adjust or replace
Adjust
Adjust or replace
Adjust or replace
Adjust or replace
Premature wear of tire
Improper tire pressure
Adjust
Tire noise
Improper tire pressure
Tire deterioration
Adjust
Replace
Road noise or body vibration
Under-pressure of tire
Wheel unbalance
Deformation of rim and tire
Uneven wear of tire
Adjust
Adjust
Repair or replace
Adjust or replace
Up and down vibration of steering wheel
Excessive deflection of wheel and rim
Looseness of wheel nut
Wheel unbalance
Fracture or wear of engine mounting rubber
Fracture or wear of transmission mounting
rubber
Replace
Tighten
Adjust
Replace
Replace
Steering wheel drifted to one side
Improper tire pressure
Excessive or uneven wear of tire
Steering system fault
Brake system fault
Suspension system fault
Adjust
Adjust or replace
Adjust or replace
Adjust or replace
Adjust or replace
Wobbling
Both side tire pressure unbalance
Deformation of rim and tire
Looseness of wheel nut
Steering system fault
Suspension system fault
Adjust
Repair or replace
Tighten
Adjust or replace
Adjust or replace
Brake pulled to one side
Both side tire pressure unbalance
Brake system fault
Adjust
Adjust or replace
Heavy steering wheel felt
Under-pressure of tire
Steering system fault
Suspension system fault
Adjust
Adjust or replace
Adjust or replace
Poor steering wheel return
Under-pressure of tire
Steering system fault
Suspension system fault
Adjust
Adjust or replace
Adjust or replace
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WT
WT Wheels
Wheels
Wheels
Wheels and
and
and
and Tires
Tires
Tires
Tires
- 180 -
Removal/installation
Removal/installation
Removal/installation
Removal/installation of
of
of
of front
front
front
front wheel
wheel
wheel
wheel assembly
assembly
assembly
assembly
Removal/installation
Removal/installation
Removal/installation
Removal/installation
Removal
1.
Loosen tire nut, and have the vehicle jacked to
remove the tire.
2.
Remove brake hose from shock absorber.
Note:
Note:
Note:
Note:
Loosen the brake caliper top bolt properly for
removal of brake caliper.
3.
Remove the brake caliper.
�
Hang the brake caliper beside the shock
absorber in order to avoid damage of brake
hose.
Caution:
Caution:
Caution:
Caution:
The left hand side bearing adjusting nut is of left
hand thread.
4.
Remove flange assembly.
�
Remove dust cover.
�
Remove split pin and nut lock piece.
�
Remove wheel bearing adjusting nut.
�
Remove washer and flange assembly together.
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WT Wheels
Wheels
Wheels
Wheels and
and
and
and Tires
Tires
Tires
Tires
- 181 -
Removal/installation
Removal/installation
Removal/installation
Removal/installation
Installation
Caution:
Caution:
Caution:
Caution:
The left hand side bearing adjusting nut is of left
hand thread.
1.
Install flange assembly.
�
Install washer and hub assembly together
with outer bearing.
Install wheel bearing adjusting nut.
2.
Install brake caliper.
3.
Install brake hose onto shock absorber.
4.
Install wheel plane bearing.
5.
Determine wheel bearing end play.
�
Tighten wheel bearing adjusting nut and rotate
the wheel at the same time to make bearing
installed in place.
�
Unscrew nut by 180° and shake wheel mount.
�
Push and pull wheel until bearing end play
can be felt.
�
If necessary, loosen the adjusting nut again by
90° until clearance can be felt.
�
Measure end play (required to be 0.002 ~
0.05mm).
�
If
necessary,
rotate
the
adjusting
nut
clockwise or counterclockwise
to obtain
required end play.
6.
Use new split pin and dust cover and reinstall the
nut lock piece.
7.
Lower the vehicle.
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WT
WT Wheels
Wheels
Wheels
Wheels and
and
and
and Tires
Tires
Tires
Tires
- 182 -
Replacement
Replacement
Replacement
Replacement of
of
of
of front
front
front
front flange
flange
flange
flange assembly
assembly
assembly
assembly (with
(with
(with
(with flange
flange
flange
flange assembly
assembly
assembly
assembly already
already
already
already removed)
removed)
removed)
removed)
Removal
1.
Mark properly on flange and brake disc to facilitate
positioning during reinstallation.
2.
Remove flange from brake disc.
3.
Remove oil seal.
4.
Remove inner and outer races of conical bearing.
Caution:
Caution:
Caution:
Caution:
Don’t make burr on flange to ensure bearing race
can be fitted in place.
Note:
Note:
Note:
Note:
Tap the bearing race alternately and diagonally and
don’t make the sleeve tilted.
5.
Remove inner and outer races of bearing.
6.
Clean mating face between wheel hub and brake
disc.
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