Removal
1. Raise the rear of the vehicle and support it on stands.
2. Remove the wheel.
3. Release the handbrake cable housing and disconnect the cable from the lever on the caliper.
4. To reduce fluid loss, tightly close the tank cap using plastic film, or pinch the hoses.
5. Clean the hose ring fitting and unscrew the bolt, plug the holes.
6. Remove two gaskets.
7. Remove the pads.
8. Loosen the upper caliper pin bolt.
9. Remove the caliper from the bracket.
10. If necessary, the caliper bracket can be removed from the journal.
Disassembly
1. Carefully clean the caliper.
2. Reach your fingers into the heads of the bolts that you screw into your fingers.
3. Remove the rubber finger covers.
4. Turn it inside out (rotate counterclockwise) and remove the piston from the cylinder.
5. Remove the cover.
6. Compress the cylinder spring by pressing on the cap and remove the retaining ring from the cylinder groove.
7. Gradually release the spring and remove the snap ring, cap, spring, lock plate, push rod and spacer.
8. Use a wooden stick to remove the cylinder seal.
9. Unhook the spring from the handbrake lever, unscrew the nut and remove the lever from the caliper.
10. Wash all parts in clean brake fluid or alcohol.
11. All seals and covers must be replaced.
12. Check the condition of the caliper, especially carefully inspect the piston and the inner surface of the cylinder, replace worn parts. The caliper or caliper bracket are not supplied separately as spare parts.
13. Minor defects on the cylinder are eliminated by polishing with fine sandpaper, while the piston with the same defects must be replaced. Polishing the piston is prohibited.
14. Check the condition of the threads on the caliper pins; there should be no play in the pins in the caliper.
15. Blow out the brake fluid passages.
16. Before assembly, check that all parts are clean.
17. Place the new boot on the handbrake lever eccentric.
18. Install the spring, washer and tighten the nut.
19. Lubricate the eccentric with brake fluid and install it on the caliper.
20. Make sure that when you turn the lever, the groove in the eccentric is aligned with the hole in the push rod.
21. Put on the lever spring.
22. Dip the new cylinder seal into the fluid and install it into the cylinder groove.
23. Place a new sealing ring on the pushrod and lubricate the spacer and pushrod with rubber oil.
24. Install all parts into the caliper.
25. Install the lock plate so that the groove is on the flat part of the pushrod and the bulge is aligned with the recess in the caliper.
26. Install the snap ring.
27. Install the spring and cap, compress the spring and install the snap ring.
28. Lubricate the edge of the cylinder boot with rubber oil and place it on the piston.
29. Lubricate the piston and the cylinder walls in the caliper with brake fluid, screw the piston into the cylinder, turning it clockwise.
30. Place the second edge of the boot on the caliper.
31. Place new boots on the caliper pins.
32. Replace the rubber bushing on the top pin.
33. Before installing into the caliper, lubricate the pins with brake fluid.
Installation
1. Install the caliper bracket onto the journal and tighten the bolts.
2. Install the caliper, lubricate the threads of the upper pin bolt with a locking compound and tighten the bolt to the specified torque.
3. Install the pads.
4. Check the freedom of movement of the caliper in the bracket.
5. Attach the hose by installing two gaskets and tightening the ring fitting bolt.
6. Attach the handbrake cable to the lever, install the bracket. On some cars, insert the cable sheath into the bracket, and align the protrusion on the bracket with the recess on the caliper body.
7. Remove the polyethylene gasket from the tank cap (or remove the clamps from the hoses).
8. Remove air from the wheel brake hydraulic drive (if the integrity of other contours was not violated).
9. Press the brake pedal several times.
10. Install the wheels, lower the car.
11. Check the operation of the brakes before leaving.