1. The thickness of the rear drum brake pads can be checked without removing the brake drums. Remove the rubber plug that is located above the handbrake cable entry on the drum brake shield (photo). Check the thickness of the friction material left on the brake shoes. If it is close to the minimum given in the Specifications, conduct a more complete check by removing the brake drum.
2. Block the front wheels, then jack up the rear of the vehicle and support it on axle stands. Remove the rear wheels, release the parking brake.
3. Remove the cover in the center of the brake drum.
4. Remove the pin, remove the blocking ring.
5. Unscrew the nut, remove the thrust washer.
6. Remove the brake drum, make sure that the outer wheel bearing does not fall out. If the brake drum is stuck on the shoes, insert a small screwdriver through the wheel bolt hole and press the wedge.
7. Note the position of the brake shoes and springs (photo).
8. Use pliers to press the spring holder covers, turn them 90°and remove them together with the springs (photo).
9. Disconnect the lower return spring from the shoes (photo).
10. Separate the base of the shoes from the anchor, then release the top from the working brake cylinder and turn until the back of the shoes appears.
11. Disconnect the handbrake cable, then clamp the base of the shoes in a vise.
12. Disconnect the top return spring and wedge spring.
13. Separate the secondary brake shoe from the primary brake shoe and push rod.
14. Disconnect the tension spring and remove the push rod from the primary brake shoe, along with the wedge.
15. Clean the brake drum, brake shoes and dust shield. Clean the drum of rust.
16. Measure the thickness of the brake shoe lining. If it is worn to the specified minimum value, replace all four rear brake shoes.
17. Clean the drum brake shield. If there are signs of loss of lubrication from the hub bearings, the oil seal must be replaced, guided by Section 10. If brake fluid leaks from the working brake cylinder, it must be repaired or replaced as described in Chapter 8. Do not touch the brake pedal while the brake shoes are removed. Fix the pistons of the working brake cylinder with an elastic band.
18. Apply grease to the contact surfaces of the parking brake lever and push rod.
19. Clamp the push rod in a vise, then slide the tension spring over the push rod and primary shoe, and place the shoe slot on the push rod.
20. Install a wedge between shoe and push rod.
21. Position the parking brake lever on the secondary brake shoe in the push rod, install the upper return spring.
22. Connect the handbrake cable to the parking brake lever, turn the shoes up. Position the top of the shoes on the pistons of the working brake cylinder (photo).
23. Install the bottom return spring on the shoes, then lift the base onto the anchor.
24. Install spring onto wedge and primary shoe.
25. Install retainer springs and caps.
26. Push wedge up to create maximum shoe clearance.
27. Install the brake drum, adjust the wheel bearings as described in Section 10.
28. Depress the brake pedal once to adjust the rear brakes.
29. Repeat the procedure on the remaining rear brake, then lower the vehicle to the ground.
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