S15/T15 Jimmy 2WD L4-119 1.9L VIN A 2-BBL (1983)
Brake Shoe: Adjustments
These brakes have self adjusting shoe mechanisms that ensure correct lining-to-drum clearances at all times. The automatic adjusters operate only
when brakes are applied as vehicle is moving rearward
.
Although the brakes are self-adjusting, an initial adjustment is necessary after brake shoes have been relined or replaced, or when length of star
wheel adjuster has been changed during some other service operation.
Frequent usage of an automatic transmission forward range to halt reverse vehicle motion may prevent automatic adjusters from functioning,
thereby inducing low pedal heights. Should low pedal heights be encountered, it is recommended that numerous forward and reverse stops be
made until satisfactory pedal height is obtained.
If a low pedal height condition cannot be corrected by making numerous reverse stops (provided hydraulic system is free of air), the self-adjusting
mechanism is not functioning. Therefore it will be necessary to remove brake drum, clean, free up and lubricate adjusting mechanism. Then adjust
brakes as follows, being sure parking brake is fully released.
Upon initial adjustment, a lanced area in the brake backing plate must be removed prior to adjusting brakes. To remove lanced area, knock out
with a suitable hammer and punch, then remove brake drum to clear any metal particles caught inside the brake compartment. Install brake drum
and proceed with adjustment. After adjustment is complete, install brake adjustment hole cover to prevent entry of water and dirt.
1. Turn brake adjusting screw to expand shoes until wheel can just be turned by hand.
2. Using a suitable tool to hold actuator lever off adjuster, back adjuster off 30 notches. If shoes still drag, back off one or two additional notches.
NOTICE: Brakes should be free of drag when adjuster has been backed off approximately 12 notches. Heavy drag at this point indicates tight
parking brake cables.
3. Install adjusting hole cover on brake drum or backing plate.
4. Check parking brake adjustment.
