Parking Brake Shoe: Service and Repair

Special Service Tool(s):

Removal





1. NOTE: Make sure the parking brake control is fully released.

Relieve the tension on the parking brake system.
1 Pull the front parking brake cable and conduit.
2 Insert a 4 mm (5/32 inch) drill bit or equivalent retainer.

2. WARNING: The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in rear jack storage area. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.

Raise and support the vehicle.
3. Remove the tire and wheel assembly.





4. Remove the rear brake disc.





5. Remove the brake shoe retracting spring.





6. Remove the brake shoe adjusting screw spring.





7. Remove the brake adjuster screw.





8. Remove the rear brake shoe hold-down springs.





9. Remove the rear brake shoes and linings along with the inboard brake shoe retracting spring.
10. Inspect the components for excessive wear or damage and install new as required.

Installation





1. NOTE: Lubricate the brake shoe contact point before installation of rear shoes using Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A (Motorcraft WA-10) or an equivalent silicone compound meeting Ford Specification ESE-M1C171-A.

Install the rear brake shoes and linings along with the inboard brake shoe retracting spring.





2. Install the brake shoe hold-down springs.





3. Install the brake adjuster screw.





4. Install the brake shoe adjusting screw spring.





5. Install the outboard brake shoe retracting spring.





6. Use Brake Adjusting Gauge to measure the inside diameter of the drum portion of the rear brake disc.





7. Use Brake Adjusting Gauge to set the rear brake shoe and lining diameter to 0.5 mm (0.020 inch) less than the inside diameter of the drum portion of the rear brake disc.





8. Install the rear brake disc.

9. WARNING: Always remove any corrosion, dirt or foreign material present on the mounting surfaces of the wheel or the surface of the wheel hub, brake drum or brake disc that contacts the wheel. Installing wheels without correct metal to metal contact at the wheel mounting surfaces can cause the lug nuts to loosen and come off while the vehicle is in motion, causing loss of control.

Clean the wheel hub mounting surface.

10. NOTE: If equipped with air suspension, reactivate the system by turning on the air suspension switch.

Install the wheel and tire assembly.





11. Apply tension to the parking brake cable system.
1 Hold the front parking brake cable and conduit taut.
2 Remove the retainer from the parking brake control.
12. Check the operation of the parking brake.