Replace the pads in the following cases:
- the thickness of the friction linings is less than the permissible value;
- the surface of the linings is oily;
- the friction lining is not firmly connected to the base;
- there are deep grooves and chips on the overlays.
Warnings: Do not use gasoline, diesel fuel or any other mineral solvents to clean brakes.
Replace the brake pads on both rear wheels at the same time.
It is not allowed to replace the front and rear pads with each other, or between the left and right wheels - this can lead to uneven braking.
You will need: 10 mm and 12 mm wrenches, a punch, and pliers.
1. Engage 1st gear and place chocks under the front wheels.
2. Make sure the parking brake lever is fully depressed (the car is released).
3. Remove the wheel and clean the brake mechanism from dirt.
4. If the brake fluid level in the master cylinder reservoir is at or near the "MAX" mark, pump out some of the fluid from the reservoir. Otherwise, it may spill out when replacing the pads.
5. Remove the brake drum (see "Replacing the brake drum").
6. Remove the upper tension spring with a punch or pliers.
7. Remove the lower tension spring in the same way.
8. Remove the front shoe guide spring and then the front shoe.
9. Remove the expansion bar.
10. Remove the rear shoe guide spring and then the rear shoe by disconnecting the drive lever from the parking brake cable end.
11. Remove the cotter pin and the support washer from the rear shoe drive lever pin.
12. Press the pin and remove the drive lever from the shoe. Remove the pin from the shoe.
13. Install new pads in the reverse order of removal. When installing, insert the upper ends of the pads into the piston grooves.
[The text is copied from the online portal: vazbook.ru]
14. Use two tire irons to push the brake pads together to move the pistons toward the center of the cylinder.
15. Install the brake drum in the reverse order of removal.
16. With the vehicle on the ground, press the brake pedal two or three times to bring the pads to the drum.