All disc brakes are inherently self-adjusting. No adjustment is possible. Even though the drum brakes are self-adjusting in normal use, there are times when a manual adjustment is required, such as after installing new shoes or if it is required to back the shoes off the drum. A star wheel with screw type adjusters is provided for these occasions.
- Remove the access slot plug from the backing plate.
- Using a brake adjusting spoon pry downward (left side) or upward (right side) on the end of the tool (starwheel teeth moving up) to tighten the brakes. The opposite applies to loosen the brakes.
- When the brakes are tight almost to the point of being locked, back off on the starwheel 10 clicks. The starwheel on each set of brakes (front or rear) must be backed off the same number of turns to prevent brake pull from side to side.
- When all brakes are adjusted, check brake pedal travel and then make several stops, while backing the car up, to equalize all the wheels.
TESTING THE ADJUSTER
- Raise the and safely support the vehicle.
- Loosen the brakes by holding the adjuster lever away from the starwheel and backing off the starwheel approximately 30 notches.
- Spin the wheel and brake drum in reverse and have an assistant apply the brakes. The movement of the secondary shoe should pull the adjuster lever up, and when the brakes are released the lever should snap down and turn the starwheel.
- If the automatic adjuster doesn't work, the drum must be removed and the adjuster components inspected carefully for breakage, wear, or improper installation.