Engine JAC HFC4DA1-2C. Manual - part 163

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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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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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- 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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- 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.