Removal Procedure
Caution: Avoid taking the following actions when you service wheel brake parts:
• | Do not grind brake linings. |
• | Do not sand brake linings. |
• | Do not clean wheel brake parts with a dry brush or with compressed air. |
Some models or aftermarket brake parts may contain asbestos fibers which can
become airborne in dust. Breathing dust with asbestos fibers may cause serious bodily
harm. Use a water-dampened cloth in order to remove any dust on brake parts. Equipment
is available commercially in order to perform this washing function. These wet methods
prevent fibers from becoming airborne.
- Remove the drum. Refer to
Brake Drum Replacement
.
- Disconnect the shoe return
spring (17) from the front shoe (14).
- Remove the shoe hold-down spring (12) from the font shoe.
- Disconnect the anchor spring (10) from the front shoe.
- Remove the following components:
• | The shoe hold-down spring cups (11,13) |
- Remove the following components:
• | The rear shoe hold-down spring (8) |
• | The shoe hold-down spring cups (7,9) |
• | The adjuster spring (18) |
• | The park brake lever strut with the shoe return spring (17) |
- Disconnect the park brake cable from the lever.
- Remove the following components:
• | The 2 C-shaped park brake lever washers (1,5) |
• | The park brake lever return ring (4) |
• | The park brake lever (3) |
• | The rear brake shoe adjuster actuator (2) |
- Inspect all of the drum brake components. Replace any component
that exhibits any of the following conditions:
- Inspect the brake drum. Refinish or Replace as necessary. Refer
to
Brake Drum Surface and Wear Inspection
.
Installation Procedure
Important: Apply Lubriplate® GM P/N 1050109 white lithium grease, or
the equivalent, to all of the brake component metal contact points (where
the brake shoe metal contacts the backing plate, the wheel cylinder and the
adjustment strut, etc.) prior to installation.
- Install the following
components:
• | The rear brake shoe adjuster actuator (2) |
• | The park brake lever (3) |
• | The park brake lever return ring (4) |
• | The 2 C-shaped park brake lever washers (1,5) |
- Install the park brake cable to the lever.
- Install the following components:
• | The park brake lever strut with the shoe return spring (17) |
• | The adjuster spring (18) |
• | The shoe hold-down spring cups (7,9) |
• | The rear shoe hold-down spring (8) |
- Install the following components:
• | The shoe hold-down spring cups (11,13) |
- Install the shoe hold-down spring (12).
- Connect the park brake lever strut with the shoe return spring (17)
to the front shoe.
- Install the drum. Refer to
Brake Drum Replacement
.