Drum Brake System: Service and Repair

Clean metal portion of brake shoes. Check to see if shoes are bent.

Lining should show contact across entire width and from heel to toe, otherwise replace.

Shoes with lack of contact at toe or heel may be improperly ground.

Clean and inspect the brake support plate and the automatic self adjusting mechanism.

Visually examine the adjuster assembly to ensure it is functioning correctly by checking for the following operation.





- Be sure the star wheel on the adjuster is free to rotate throughout its entire adjustment range.
- Ensure that the adjuster actuating lever is free to move on the brake shoe.
- Inspect the adjuster actuating spring for any signs of excessive wear or damage.
- Ensure that the teeth on the star wheel are not damaged.
- Overall, examine the adjuster mechanism for excessive wear or damage and replace if necessary.

If the adjuster mechanism is reusable, apply a light coat of Mopar Multi-Purpose Lubricant or equivalent, on the threads of the adjuster mechanism.

If any return, hold down, or actuating springs have overheated or are damaged, replace them. Overheating indications are paint discoloration or distorted end coils.