798646e1

11.4. Service of back drum brake mechanisms

Removal and dismantling

 PERFORMANCE ORDER

  1. Car back also establish to Poddomkratta it on props. Block wedges both forward wheels.
  2. Remove a back wheel and the brake drum.
  3. In case of problems screw two bolts of M8 x 1.25 mm in carving openings in a drum and gradually tighten them, pushing away a drum from a half shaft flange.
  4. For simplification of the subsequent assembly try to remember the adjusting provision of components of the brake mechanism.
  5. Squeeze the directing springs of fastening of boots on a brake board, turn on 90 ° and remove holders (plates of springs), then remove from brake assembly of a spring, a saddle of springs and fingers (components of the drum brake mechanism of a back wheel are shown on an accompanying illustration).
1 — a finger
2 — a boot
3 — an arm
4 — the top coupling spring
5 — an adjusting level
6 — an adjusting spring
7 — saddles
8 — the directing springs
9 — holders
10 — the lower coupling spring
  1. Disconnect from boots the lower coupling spring and a support from brake assembly.
  2. Disconnect and remove the top coupling spring.
  3. Part the top ends of boots in the parties, taking away them from pistons of the wheel cylinder, then take off boots from a brake board.
  4. Remove an adjusting spring and a razzhimny level from boots.
  5. If you are going to replace boots, remove a lock ring and an adjusting arm from the inside of a boot.
  6. Disconnect a brake tube from the wheel cylinder, give fixing bolts and remove the cylinder from a brake board.
  7. Remove boots, pistons, cuffs and springs from the wheel cylinder.

Cleaning and check of a condition of components

 PERFORMANCE ORDER

  1. Estimate degree of wear of frictional overlays of brake boots. If thickness of slips is less admissible (see size tables and adjustments at the end of the Management), they should be replaced, or to establish new boots.
  2. If the residual thickness of slips does not go beyond norm, examine them on existence of traces of pollution by oil or lubricant, in case of identification of those - replace.

Replacement of slips is made in a set on four.

  1. Check brake drums for existence of cracks, scratches, zadir and emergence of ovality. In case of need pierce drums or replace them.
  2. Wash out components of wheel cylinders methyl alcohol, then dry up them compressed air.