Notes:
- Apply the parking brake and chock the rear wheels. Raise the front of the car and place it on supports. Remove the wheel.
- Wash and dry the brake mechanism.
- If you are going to change the piston or sealing ring, then for convenience, disconnect the wheel cylinder from the caliper.
Attention! If there are nicks, signs of wear and corrosion on the working surfaces of the piston and cylinder, they must be replaced.
Attention! The guide pins must be free of corrosion and damage. They must move freely in the base holes. Otherwise, replace the pins, as well as the torn or loose protective covers of the guide pins.
1. Loosen the mounting nut and disconnect the brake hose from the wheel cylinder nipple. Plug the hose hole
2. Use a screwdriver to bend back the tabs of the lock washers on the two guide pin mounting bolts.
3. Loosen the lower guide pin mounting bolt while holding it with a hex key.
4. Lift the caliper up and unscrew the upper mounting bolt in the same way.
5. Remove the caliper with the wheel cylinder from the base.
6. Clamp the caliper in a vice and remove the two Allen bolts securing the cylinder to the caliper.
7. Remove the wheel cylinder from the caliper.
8. Carefully remove the retaining ring so as not to tear the protective cover.
9. Remove the protective cover.
10. By applying compressed air through the brake hose nipple...
11....remove the piston from the cylinder.
12. Carefully remove the sealing ring so as not to damage the cylinder mirror.
13. Remove the bleed valve if you need to replace the wheel cylinder or the valve itself.
14. To replace the bracket base, remove the two bolts that secure it to the steering knuckle.
15. Assembly and installation of the brake caliper is performed in the reverse order. Before assembly, lubricate the sealing ring, piston and cylinder mirror with fresh brake fluid.
16. When installing the piston into the cylinder, insert the edge of the protective cap into the groove on the piston.
17. Then insert the piston into the cylinder and insert the outer edge into the groove on the cylinder body. Install the retaining ring.
18. Before installation, lubricate the guide pins with UNIOL-1 grease. Tightening torques for threaded connections see Appendix 3.