GM replacement brake lining material is recommended for all vehicles in order to maintain the balance between front and rear brake performance. GM replacement brake parts have been carefully selected to provide the proper brake balance for the purposes of stopping distance and control over the full range of operating conditions. Installation of front or rear lining material with performance different from that of the GM replacement parts recommended for this vehicle can change the intended brake balance of this vehicle.

1. Raise the vehicle and support the vehicle with safety stands.
2. Mark the relationship of the wheel to the hub.
3. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
4. Mark the relationship of the drum to the axle.
5. Remove the drum. Refer to Hub and Drum Assembly Replacement in Rear Drive Axle.



6. Remove the return springs (4,5).



7. Remove the shoe guide (3).



8. Remove the hold-down spring (6).



9. Remove the hold-down pins (3).



10. Remove the actuator lever (2) and the pivot.
11. Remove the lever return spring (8).
12. Remove the actuator link (3).
13. Remove the parking brake strut (1).
14. Remove the strut spring (15).



15. Remove the parking brake lever (1).
16. Remove the shoes (2,5).

Important: Do not interchange the right and the left adjusting screws.

17. Remove the adjusting screw assembly.



18. Remove the adjusting screw spring (14).
19. Inspect all parts for discoloration due to heat or stress. Replace the parts as needed.
20. Replace all parts with signs of wear.
21. Inspect the wheel cylinder for signs of leakage. Refer to Wheel Cylinder Replacement .
22. Inspect the brake drum for scoring and machining tolerance. Refer to Brake Drum Inspection .

1. Lubricate the shoe pads and the adjusting screw threads with a thin coat of white lithium grease.
2. Connect the adjusting screw (12) and the adjusting screw spring to both shoes (2,5). The coils of the spring must not touch the adjusting screw (12).
3. Install the shoe assembly.
4. Install the parking brake lever (1).



5. Install the strut spring (15).
6. Install the parking brake strut (1).
7. Install the actuator lever (2) and pivot.
8. Install the actuator link (3).
9. Install the lever return spring (8).



10. Install the hold-down pins (3).



11. Install the hold-down springs (6).
12. Install the return springs (4,5).
13. Install the drum. Align the marks made during disassembly.
14. Install the tire and the wheel. Align the marks made during disassembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
15. Adjust the brakes. Refer to Drum Brake Adjustment .