Engine JAC HFC4DA1-2C. Manual — part 132
BR
BR
BR
BR Brake
Brake
Brake
Brake System
System
System
System
- 48 -
②
Check the runout with dial indicator. (It is
preferable to conduct measurement at points
10mm distant from the disc edge)
Runout limit: 0.05mm
③
If the disc runout exceeds the specified value,
please replace or reprocess it accordingly.
3.
Thickness inspection
Check
the
thickness
of brake
disc
with
a
micrometer.
If the thickness is less than the wear limit, please
replace the brake disc.
Standard thickness: 24.3mm
Wear limit: 22.3mm
BR
BR
BR
BR Brake
Brake
Brake
Brake System
System
System
System
- 49-
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
Vehicle pulled to one side
when braking
Insufficient left/right tire pressure
Adjust
Improper front wheel alignment
Adjust
Poor contact of brake shoe
Adjust
Grease or oil existed on brake shoe surface
Replace
Improper installation of brake wheel cylinder
Adjust
Failure of auto-regulating mechanism
Adjust
Insufficient brake force
Low level or contamination of brake fluid
Replenish or change
Air existed in brake system
Bleed air out of system
Failure of vacuum booster
Adjust
Poor contact of brake shoe
Adjust
Grease or oil existed on brake shoe surface
Replace
Failure of auto-regulating mechanism
Adjust
Overheating of brake rotary parts due to sluggish of brake shoe
Adjust
Restriction of brake line
Adjust
Pedal travel increase
(decrease of clearance
between pedal and floor)
Air existed in brake system
Bleed air out of system
Leak of brake fluid
Adjust
Failure of auto-regulating mechanism
Adjust
Excessive clearance between pushrod and brake master cylinder
Adjust
Brake hysteresis
Parking brake not fully released
Release
Improper adjustment of parking brake
Adjust
Wear of brake pedal return spring
Replace
Restriction of return opening of brake master cylinder
Adjust
Insufficient lubrication of sliding parts
Lubricate
Defective check valve or piston return spring of brake master cylinder
Replace
Insufficient clearance between pushrod and brake master cylinder
Adjust
Insufficient parking braking
Damage of rear brake shoe
Replace
Grease or oil existed on rear brake shoe surface
Replace
Parking brake cable stuck
Adjust
Failure of auto-regulating mechanism
Adjust
Excessive travel of parking brake handle
Adjust
BR
BR
BR
BR Brake
Brake
Brake
Brake System
System
System
System
- 50 -
Removal/Installation
Removal/Installation
Removal/Installation
Removal/Installation
Front
Front
Front
Front brake
brake
brake
brake disc
disc
disc
disc
Removal
1.
Have the vehicle lifted and remove the front wheel.
2.
Remove the brake hose from the shock absorber.
Note:
Note:
Note:
Note:
Loosen the brake caliper to certain degree ready
for removal instead of removing it completely.
3.
Remove the brake caliper.
Hang up the brake caliper properly in order to
avoid damage of brake hose.
Caution:
Caution:
Caution:
Caution:
Bearing preload adjusting nut is of right hand
thread.
4.
Remove the brake disc assembly:
�
Remove the dust cover.
�
Remove the split pin and nut retainer.
�
Loosen the adjusting nut of wheel bearing.
�
Remover the brake disc assembly.
5.
Remove the wheel hub from the wheel disc.
Bend the lock lug on the set bolt down.
6.
Clean the contact surface between wheel hub and
disc.
BR
BR
BR
BR Brake
Brake
Brake
Brake System
System
System
System
- 51-
Removal/Installation
Removal/Installation
Removal/Installation
Removal/Installation
Installation
1.
Install the wheel hub onto the brake disc.
Bend the lock lug on the set bolt up.
Caution:
Caution:
Caution:
Caution:
The left hand side bearing adjusting nut is of left
hand thread.
2.
Reinstall the hub bearing:
�
Reinstall the washer and brake disc assembly,
as well as the outer bearing.
�
Reinstall the wheel bearing adjusting nut.
3.
Reinstall the brake caliper.
4.
Install the brake hose onto the shock absorber.
5.
Check the front disc runout as required.
6.
Set the axial clearance of wheel bearing:
�
Tighten the adjusting nut of wheel bearing and
rotate the wheel at the same time to make it
closely fitted against the bearing.
�
Rotate the adjusting nut by 180 degree and
shake the wheel to make the hang properly
fitted.
�
Push and pull the wheel horizontally to check
the bearing axial clearance. If no clearance
can be felt, adjust the adjusting nut to make
the axial clearance within 0.002~0.05mm.
7.
Use new split pin to reinstall the nut lock piece and
the dust cover.
8.
Reinstall the wheel.
9.
Lower the vehicle.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст