Removal & Installation
Dust and dirt accumulating on brake parts during normal use may contain asbestos fibers from production or aftermarket brake linings. Breathing excessive concentrations of asbestos fibers can cause serious bodily harm. Exercise care when servicing brake parts. Do not sand or grind brake lining unless equipment used is designed to contain the dust residue. Do not clean brake parts with compressed air or by dry brushing. Cleaning should be done by dampening the brake components with a fine mist of water, then wiping the brake components clean with a dampened cloth. Dispose of cloth and all residue containing asbestos fibers in an impermeable container with the appropriate label. Follow practices prescribed by the Occupational Safety and Health Administration (OSHA) and the Environmental Protection Agency (EPA) for the handling, processing, and disposing of dust or debris that may contain asbestos fibers.
- Raise and safely support the vehicle.
- Remove the rear wheels.
- Remove the brake drums.
- Remove the brake return springs.
- Remove the leading shoe holding pin and spring, and then the leading shoe.
- Remove the self-adjuster and the adjuster lever.
- Remove the trailing shoe holding pin and spring.
- Disconnect the parking brake cable from the trailing shoe and remove the trailing shoe. Remove the parking brake lever from the trailing shoe.
- Attach the parking brake lever to the trailing shoe.
- Connect the parking brake cable to the parking brake lever.
Apply a thin coat of high temperature grease to the shoe contact points on the brake backing plate contact surface (B), and self-adjuster (D).
- Position the trailing shoe on the backing plate and install the hold-down pin, spring, and retainer. Be careful not to stretch the return spring when fitting the shoes onto the backing plate.
- Connect the upper return spring and the leading shoe to the trailing shoe and position the leading brake shoe on the backing plate.
- Install the adjuster assembly and the hold-down pin, spring, and retainer.
- Use a brake spring tool to install the lower return spring.
- Install the self-adjuster lever and adjuster spring.
- Adjust the shoe-to-drum clearance to 0.0098-0.0157 in. (0.25-0.40mm) and install the brake drum.
- Check the brake drum for scoring or other wear. Machine or replace as necessary. Check the maximum brake drum diameter specification when machining.
- Install the rear wheels. Lower the vehicle.
- Road-test the vehicle.