JAC HFC4181KR1 Owner's Manual page 83

OWNER ' S MANUAL
JAC HEAVY DUTY TRUCK
ADJUSTMENT OF BRAKE SHOE CLEARANCE
Air over hydraulic brake vehicles
If the brake linings are worn and the clearance between the brake drum and linings (brake shoe clearance) increases, it
can be dangerous because the brake performance deteriorates.
If the BRAKE pilot lamp lights, adjust and bleed the system immediately.
Leakage of brake fluid also causes the BRAKE pilot lamp to light. Check for fluid leaks, too.
1. Apply chocks to the tires before the wheel to be adjusted is jacked up.
2. Strongly push the outside periphery of tire with both hands to check for wheel looseness. If the wheel is loose, it can鄄
not be correctly adjusted. Take the vehicle to your nearest service shop for correction.
3. Remove the dust plug from the shoe clearance adjusting hole.
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NOTE:
Be sure not to hurt yourself.
4. Turn the adjusting cam in the direction of the arrow until it is blocked.
Slightly back it off.
5. Insert a 0.4 mm (0.016 in.) thickness gauge over the entire width of lining
through the adjusting hole and turn the adjusting cam to adjust the clearance
to the extent that the thickness gauge can be pulled out with some resistance.
6. Each wheel has two adjusting holes at the front and rear. Be sure to adjust
both by the same method.
1) Adjusting hole
2) Adjusting cam
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