Replacing the brake pads of the brake mechanism of the rear wheel

The minimum allowable thickness of the friction linings of the brake pads of the brake mechanism of the rear wheel is 1.0 mm.

Note. It is difficult to measure the thickness of a completely worn brake pad with a sufficient degree of accuracy. Therefore, measure the total thickness of the pad and subtract the thickness of the base of the pad from the resulting value (2.0 mm).

Replace pads in the following cases:

• the thickness of the friction linings is less than the allowable value;
• the surface of the pads is oiled;
• the friction lining is loosely connected to the base;
• linings have deep grooves and chips.

Attention! Do not use gasoline, diesel fuel or any other mineral solvents to clean the brakes.

Attention! Replace pads simultaneously in the brake mechanisms of both rear wheels.

You will need: a wheel nut wrench, thin-jawed pliers, a flat-blade screwdriver, sliding pliers with locking.

1. Engage 1st gear and chock the front wheels.

2. Check that the parking brake lever is pushed all the way down (the car is disinhibited).

3. Place the car on a support and remove the wheel from the corresponding side.

4. If the brake fluid level in the master cylinder reservoir is at the mark «MAX» or approaches it, pump some of the fluid out of the tank. Otherwise, when replacing the pads, it may splash out.

5. Remove the brake drum (see «Removal and installation of a brake drum»).



6. Remove the rear fastening of the spring stop of the brake pad clearance adjuster by prying it with a screwdriver.




7. Similarly, remove the front fastening of the spring stop..



8.... and remove the spring stop from the spacer bar.



9. Tighten the lash adjuster toothed nut until it stops by turning it clockwise.



10. Slightly pull back the front shoe and remove the spacer bar assembly with the clearance adjuster.




11. Using a screwdriver, unhook the bent end of the upper coupling spring from the rear shoe with pliers, unhook its second end from the front shoe..



12.... and remove the spring.



13. Similarly remove the lower coupling spring.



14. Turn down and remove the front brake shoe clamp by pulling it towards you.




15. Remove the clamping bracket post from the hole in the brake shield..



16.... and remove the front brake pad.

17. Remove the rear brake shoe clamp.



18. Move back the end of the rear cable extension in the groove of the expansion lever so that it matches the slot in the lever..




19.... disconnect the tip of the cable from the expansion lever and remove the rear brake shoe.

Attention! Immediately after removing the pads, secure the pistons of the working cylinder in any way possible (for example, tie with a rubber band or tie with wire), to prevent the pistons from being pushed out of the cylinders.

20. Clean and inspect brake parts (pic. 9.6). Replace deformed or heavily corroded parts. Strongly stretched, lost elasticity and bent springs replace.

Note. Whenever dismantling the brake mechanism, replace the clamping brackets with new ones.

Note. When replacing brake pads, we recommend replacing the spacer bars assembled with clearance adjusters if they have begun to corrode, since during further operation corrosion can cause clearance adjuster failure.

Note. The parts of the left brake clearance adjuster are not interchangeable with the corresponding parts of the right brake mechanism - do not mix them up!

Note. Front 1 (see fig. 9.6) and rear 4 pads of the rear brake mechanism are different in design (the parking brake release lever is attached to the rear shoe with the help of a riveted axle, and the friction lining of the front shoe is shorter but thicker than that of the rear shoe). In addition, the rear brake pads are different as left and right.

21. Apply refractory brake grease to the friction points of the front and rear brake pads on the brake shield.

22. Release the pistons of the working cylinder from the fixing device, squeeze the pistons of the working cylinder with sliding pliers and install the brake shoes in the reverse order of removal.

Attention! Please note that when the pistons are sunk into the cylinder, the level of brake fluid in the reservoir of the master brake cylinder rises. Pump out the fluid if necessary.

23. Install the brake drum (see «Removal and installation of a brake drum»).

24. Adjust the clearance between the brake shoes and the drum by pressing the brake pedal 10-15 times. Each time you press it, you should hear the knob click. If the clicks stop, the clearance is set.

25. Reinstall the wheel. Check for ease of rotation.

26. Similarly, replace the brake pads of the brake mechanism of the other wheel.

27. After installing the brake pads, adjust the parking brake system (see «Parking brake actuator adjustment»).