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;
- the overlays have deep grooves and chips.
Warnings: Do not use gasoline, diesel fuel or any other mineral solvents to clean brakes.
Replace the brake pads on both front wheels at the same time.
It is not allowed to replace the inner and outer pads with each other, or between the left and right wheels - this can lead to uneven braking.
1. Disconnect the wire from the "–" terminal of the battery.
2. Apply the parking brake and place chocks under the rear wheels.
3. Remove the front 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 will spill over the edge when installing new pads.
5. Remove the rubber seal together with the hose from the bracket.
6. Use a screwdriver to bend back the tab of the lock washer on the upper guide pin mounting bolt.
7. Unscrew the upper guide pin mounting bolt, holding the pin with a hex key.
8. Rotate the bracket body downwards around the axis of the lower pin.
9. Mark the brake pads if you intend to reinstall them.
10. Remove the brake pads.
Warning! The surface of the friction linings must not be oily, with deep scratches and chips. The lining must be firmly connected to the base of the shoe.
11. Check the thickness and condition of the brake pad friction linings.
Helpful advice. If the thickness of the pads approaches the minimum permissible during the next check, then such pads are still functional, but their service life will soon end. Choose for yourself: either replace the pads immediately or constantly monitor their thickness.
12. Clean the brake parts, especially the brake pad seats, from dirt and rust.
13. When installing new pads, press the piston into the cylinder. To do this, install the worn brake pads in place (instead of the internal one it is desirable to install only the base) and lift the bracket housing. Using a screwdriver or crowbar, press the inner shoe and lean on the brake disc to carefully press the piston into the cylinder.
14. Install new brake pads. Make sure that the pressure springs are parallel to the top edge of the brake pads. The old pads must be installed in accordance with the previously made markings.
15. Turn the bracket body and tighten the upper guide pin mounting bolt to a torque of 31–38 N·m (3.1–3.8 kgf·m), holding the pin with a wrench by the Allen key.
16. Bend the tab of the lock washer with a screwdriver. Install the wheel and lower the car to the ground. Then press the brake pedal several times to set the piston to the working position. Check brake fluid level in the tank and, if necessary, bring it up to standard.
