Brake Shoe: Service and Repair
BRAKE PADS/SHOES - REAR DRUMREMOVAL
NOTE: Before proceeding with this procedure, Refer to WARNING.
1. Raise the vehicle.
2. Remove both rear tire and wheel assemblies from the vehicle
3. Begin on one side of the vehicle.
4. Remove the brake drum retaining clips (if equipped) (Fig. 33).
5. Remove the brake drum (Fig. 33).
6. Remove the automatic adjustment lever-to-brake shoe spring (Fig. 34).
7. Remove the automatic adjustment lever (Fig. 35) from the brake shoe.
8. Remove the hold down clips and pins attaching the leading and trailing brake shoes to the brake support plate (Fig. 36).
9. Remove the lower brake shoe-to-anchor plate return spring (Fig. 37).
10. Remove the parking brake lever pin-to-brake shoe retaining clip (Fig. 38).
11. Remove the leading and trailing brake shoes, upper return spring and automatic adjuster screw from the brake support plate as an assembly (Fig. 39).
12. Disassemble the shoes completely once on the bench.
13. Repeat the above procedure to the rear brakes on the other side of the vehicle.
CLEANING
WARNING: 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.
INSPECTION
Rear brake shoe lining should show contact across the entire width of the lining and also from the heel to the toe of the lining. Replace the shoes if noted otherwise.
Brake shoes with lack of contact at the toe or heel of the brake shoe lining may be improperly ground.
Clean and inspect the brake support plate and shoe adjuster screw. Apply a thin coat of Mopar Multi-Purpose Lubricant or equivalent to the threads of the self-adjuster (Fig. 40). Replace the adjuster screw if it is corroded.
NOTE: Adjuster screws are different side-to-side. Left side adjuster screws have left-hand threads and right side adjuster screws have right-handed threads.
If the old brake shoe return or hold down springs have overheated or are damaged, replace them. Overheating indications are paint discoloration or distorted end coils.
INSTALLATION
NOTE: Before proceeding with this procedure, Refer to WARNING.
1. Begin on one side of the vehicle.
2. Lubricate the eight shoe contact areas on the support plate and anchor using Mopar Multi-Purpose Lubricant or equivalent (Fig. 41).
3. Assemble the front and rear brake shoe assembly, automatic adjuster screw, and upper return spring before installation on the vehicle.
4. Install the pre-assembled brake shoes, automatic adjuster screw and upper return spring on the brake support plate (Fig. 39).
5. Install the wave washer on the pin of park brake lever.
6. Install the pin on the parking brake lever into hole in rear brake shoe assembly (Fig. 42).
7. Install both brake shoe-to-brake support plate hold down pins and clips (Fig. 36).
8. Install the lower brake shoe-to-anchor plate return spring (Fig. 37).
9. Install the automatic adjustment lever on the leading brake shoe (Fig. 35).
10. Install the automatic adjustment lever-to-brake shoe spring (Fig. 34).
11. Adjust the brake shoes out until the drum lightly drags on the shoes when it is installed. Do not over-adjust the brakes.
12. Install the brake drum (Fig. 33).
13. Repeat the above procedure to the rear brakes on the other side of the vehicle.
14. Install the tire and wheel assemblies. Tighten the wheel mounting nuts to a torque of 135 Nm (100 ft. lbs.).
15. Adjust the rear brake shoes.
16. Lower the vehicle.
17. Road test vehicle stopping in both the forward and reverse directions. The automatic adjuster will continue to adjust the brakes during the road test of the vehicle.