Check the condition of the brake pads at every maintenance.
Brake pads require replacement when the linings are worn out (minimum permissible thickness of friction linings 2 mm), poor connection of the pads to the base, oily work surfaces, presence of deep grooves or chips.
WARNINGS: Replace the front brake pads only with a set of four pieces (two on each side). Before replacing the brake pads, check the brake fluid level in the master cylinder reservoir. If the level is close to the "MAX" mark, it is necessary to pump out some of the fluid (for example, with a medical syringe or a rubber bulb), because after replacing worn pads with new ones the level will rise.
1. Loosen the nuts of the left front wheel, put the anti-rollback stops ("shoes") under the rear wheels, Use the jack to lift the front part of the car, install it on reliable supports, remove the left front wheel.
2. Loosen the tightening of the lower caliper guide pin mounting bolt, holding the pin from turning with a second wrench...
3. ...and unscrew the bolt.
4. Remove the brake hose retainer from the slot in the bracket on the shock absorber strut.
5. Lift the caliper up...
6. ...remove the outer...
7. ...and internal brake pads.
NOTE: This is what the front brake pads look like. They vary in shape and design (the inner shoe has a sound indicator of the wear limit, shown in the photo by the arrow), as well as catalog numbers.
8. Remove the bottom...
9. ...and the upper brake shoe pressure springs and inspect them.
NOTE: Replace springs if they are deformed or badly corroded.
10. Press down the piston of the working cylinder using adjustable pliers.
USEFUL TIPS: Whenever you replace the brake pads, be sure to check the condition of the protective rubber boots of the guide pin and the movement of the caliper relative to the brake pad guide. If movement is difficult, lubricate the caliper guide pins with grease.
To do this, remove the guide pin...
...lubricate it with grease, and then lubricate the protective boot of the finger. Lubricate the second guide finger and its boot in the same way.
Install the guide pins in the reverse order of removal.
Replace the guide pin boots if they are hardened, deformed or torn.
11. Similarly, replace the brake pads of the right front wheel brake mechanism.
12. Check and, if necessary, restore the brake fluid level in the master cylinder reservoir.
USEFUL TIPS: After replacing worn brake pads with new ones, do not rush to drive on busy highways. It is possible that at the first intensive braking you will be unpleasantly surprised by the low efficiency of the brakes, although the pads are original. Brake discs also wear out, and new pads touch them only with their edges, practically without braking. Choose a quiet street or a passage without cars and brake smoothly several times so that the pads rub in and begin to fit over the entire surface. At the same time, evaluate the efficiency of the brakes.
Try not to brake sharply for at least the first 100 km. If the brake pads are too hot, the top layer of their linings will burn and the brakes will not be as effective as possible for a long time.
The article was reprinted from the website: CHEVYMAN.RU