Brake Shoe: Service and Repair

Special Tools:

Removal

WARNING: Asbestos fiber dust can be present on brake and clutch assemblies and is hazardous to health if inhaled.

Brake and clutch assemblies must be cleaned using a vacuum cleaner recommended for use with asbestos fibers, such as the brake/clutch/service vacuum. The bag must be labeled per OSHA instructions, sealed, and the trash hauler notified as to the bag's contents.

If a vacuum suitable for asbestos is not available, cleaning must be done wet. If dust generation is still possible, technicians must wear government-approved toxic dust purifying respirators.

The Occupational Safety And Health Act (OSHA) requires areas where asbestos dust generation is possible to be isolated and posted with warning signs. Only technicians performing brake or clutch repair are to be present in the area.

WARNING: To reduce the possibility of uneven braking, always replace rear brake shoes and linings at both ends of an axle.

1. Remove the brake drum.





2. Inspect the rear brake assembly for the following:
- the rear wheel cylinder for excessive leakage that can contaminate brake system parts, and rebuild as necessary.
- the rear brake shoes and linings for contamination, and replace as necessary.
- the rear brake shoes and linings for minimum thickness above backing plate or rivets, and replace as necessary.
- the springs for heat discoloration, and replace as necessary.





3. Remove the brake shoe retracting spring.





4. Disconnect the parking brake lever.
1 Remove the parking brake lever bolt lock nut, at the back of the brake backing plate, and the parking brake lever bolt.
2 Remove the parking brake rear cable and conduit from the parking brake lever.

5. Remove the parking brake lever.





6. Remove the adjusting screw assembly.
1 Disconnect the brake shoe adjusting lever cable from the brake shoe adjusting lever.
2 Remove the brake shoe adjusting lever cable.
3 Remove the cable guide.
4 Remove the adjusting lever return spring and the brake shoe adjusting lever.
5 Remove the brake shoe adjusting screw spring.
6 Remove the brake adjuster screw assembly.





7. Remove the rear brake shoe and lining.
1 Remove the brake shoe anchor pin guide plate.
2 Remove the brake shoe hold-down springs and the brake shoe hold-down spring pins.
3 Remove the rear brake shoes and linings.

Installation





1. Lubricate the brake backing plate friction points. Use Silicone Brake Caliper Grease and Dielectric Compound DA7AZ-193A331-A (Motorcraft WA-10) or an equivalent silicone compound meeting Ford specification ESE-M1CJ71-A.





2. Install the rear brake shoes and linings.
1 Position the rear brake shoes and linings.
2 Install the brake shoe hold-down spring pins and the brake shoe hold-down springs.
3 Install the brake shoe anchor pin guide plate.





3. Note:: To prevent incorrect installation, the socket end of each brake adjuster screw is stamped R or L.

Assemble the brake adjuster screw assembly.

1Apply Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A (Motorcraft WA-10) or an equivalent silicone compound meeting Ford specification ESE-M1C171-A.
2 Install the brake adjuster screw into the brake shoe adjusting screw nut to the end of the threads, and then loosen one-half turn.
3 Install the brake shoe adjusting screw socket on the brake shoe adjusting screw nut.





4. Install the brake adjuster screw assembly.
1 Position the brake adjuster screw assembly.
2 Install the brake shoe adjusting screw spring.
3 Position the brake shoe adjusting lever cable.
4 Install the cable guide.
5 Position the adjusting lever return spring and the brake shoe adjusting lever.
6 Hook the brake shoe adjusting lever cable to the brake shoe adjusting lever.





5. Test the operation of the automatic self-adjuster.
1 Pull the brake shoe adjusting ]ever cable and check that the brake shoe adjusting lever rotates the brake shoe adjuster assembly.
2 Release the brake shoe adjusting lever cable and check that the brake shoe adjusting lever advances to the next notch on the brake shoe adjusting screw nut.





6. Install the parking brake lever.
1 Attach the parking brake rear cable and conduit to the parking brake lever.
2 Position the parking brake lever.
3 Install the parking brake lever bolt and, at the back of the brake backing plate, the parking brake lever bolt lock nut.





7. Install the brake shoe retracting spring.
8. Adjust the brakes.
9. Install the brake drum.