Removal
1. Remove the wheel.
2. Unscrew the rear wheel bearing mounting nut and remove the hub with the brake drum.
3. Remove the lower return spring, clip and brake shoe support spring.
4. Remove the brake pads together with the adjuster.
Examination
1. Measure the inside diameter of the brake drum. Use a dial indicator to check the runout of the brake drum. Replace the brake drum if the drum inner diameter exceeds the maximum allowable value.
- Nominal diameter: 203.2 mm
- Maximum diameter: 205.2 mm
- Brake drum runout: 0.05 mm
2. Measure the thickness of the rear brake shoe linings. Replace all brake pads on one axle of the vehicle, even if only one pad has a thickness less than the maximum allowable.
- Brake pad thickness: 4.5 mm
- Minimum permissible thickness of brake shoe linings: 1.0 mm
3. Check that the brake shoe fits evenly against the brake drum.
4. Inspect the wheel brake cylinders for brake fluid leaks.
5. Inspect the brake shield for wear or damage.
Installation
1. Lubricate the following contact points of the brake pads with grease:
- contact points of the brake pads with the brake shield;
- points of contact between the brake pads and the backing plate.
Recommended lubricant: SAE J310, NLGI No. 2.
2. Install the brake shoe support stand.
3. Install the return springs onto the brake shoes.
4. After installing the brake drum, tighten the parking brake lever several times.