DongFeng DFA1063DJ10-301, Руководство по обслуживанию

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Brake System
BR-7
Adjust
After the brake linings have been replaced, the
brake bottom plates have been dismounted, causing the
positions of the anchor pins and the camshaft changed,
the normal contact of the brake linings and the brake
drum is destroyed; adjust the brake entirely as follows:
1.Take off the cover of the inspection hole on the drum. Loosen the securing nuts of the anchor pins and the nuts
of the securing nuts for the air chamber bracket.
2.Turn the anchor pins to make the marks at their ends opposite each other inwardly.
3.Turn the anchor pins and the worm shaft of the slack adjuster again and again to keep the linings fitted to the
drum fully. At the adjusted position, tighten the nuts of the air chamber bracket and the nuts of the anchor pins.
(Be careful to keep the positions of the anchor pin and the air chamber bracket fixed.)
4.Loosen the worm shaft 1/2~2/3 turn. The drum should rotate freely, but not touch the linings or any other parts.
The clearances between the brake linings and the drum should be:
Near the anchor pins 0.25~0.40mm
Near the camshaft 0.40~0.55mm
The difference of clearance at the same end of the two shoes ≤ 0.1mm
When braking linings worn out and the push rod stroke of the chamber exceeds 40mm, partial adjustment should
be done immediately to reduce the clearance between the linings and the drum. (Never turn the anchor pins to
destroy the good match of linings and drum.) When adjusting, face the worm shaft of slack adjusters, turn the
worm shaft clockwise, clearance decreased, and turn anticlockwise, clearance increased. It is wrong to adjust
clearance by tightening the push rod clevis for changing the stroke of push rod.
Note:
During adjusting the brake clearance, clean up dirt and filth on the head of the adjusting arm worm shaft.
Make use of a double offset ring spanner, cover it onto the worm shaft head, press the lock bush to release the
worm shaft and then turn the worn shaft. If the lock bush can't be pressed down, knock it with a hammer gently
and then press. After adjusting, cover with a rubber dust shield.
Lubricate
1.The brake cam surface
2.Camshaft journal
3.The anchor pins and the holes
4.Brake slack adjust arm assembly
5.Bearing holes of the camshafts on the brake chamber bracket