Cars up to 9/89, issue. and models "station wagon"
1 - brake drum; 2 - pin and fastening spring; 3 - front and rear brake pads; 4 - return springs; 5 - damping springs; 6 - adjustment device; 7 - wheel brake cylinder; 8 - brake shield
Attention! Remove the parts in the order they are numbered. The individual elements of the right and left brakes are different and must not be mixed up.
Removing
1. Change the position of the wheel disk relative to the hub so that the balanced wheel can be installed in its previous position.
2. Loosen the wheel nuts of the car on the ground.
3. Raise the rear of the car.
4. Remove the wheel.
5. Release the handbrake.
6. Straighten the lock plate with a hammer and chisel and loosen the hub nut.
Attention! On the left side, the hub nut has a left-hand thread, it must be rotated to the right to loosen it (clockwise).
7. Remove the brake drum, making sure that the hub bearing does not fall out. If the brake drum cannot be removed, loosen the handbrake cable completely.
8. Before removing the return springs, it is recommended to mark their installation position. This makes installation easier.
9. Firmly press the clamping spring and turn it 90. While pressing, hold the pin at the back on the brake shield. Remove the pin on the other block in the same way.
10. Fold the front block out and disconnect the springs -4- and -5-.
11. Remove both brake pads.
Attention! Do not press the brake pedal with the brake pads removed, otherwise the piston will pop out of the wheel brake cylinder. For piston installation, see Section Wheel Brake Cylinder Repair.
12. Attach the handbrake cable to the adjusting device with a screwdriver. Remove the adjusting device.
13. Remove boot -5- on wheel brake cylinder.
Attention! In this case, the piston should not be pulled out. Check if it is damp behind the boot. Repair the wheel cylinder if necessary.
14. Put the boot on the wheel cylinder.
Installation
Attention! Be sure to replace all 4 brake pads, even if only one has reached the wear limit. Use pads of the same brand. Clean the brake drum and brake shield with a vacuum cleaner or alcohol. If the wheel brake cylinder is wet, replace it. Lightly lubricate the adjusting device with MoS2 grease. Boring grooved drums, always working on both drums. Brake drums can be bored up to a maximum diameter of 201 mm.
1. Remove minor irregularities and traces of rust with fine sandpaper.
2. Clean the six contact surfaces between the brake pads and the brake shield and coat with a thin layer of heat-resistant grease, preferably high-temperature copper paste, before installing the pads.
3. Attach the springs to the adjusting device and the brake shoes.
4. Before installing the brake shoes, slide the segment of the adjusting device until it rests against the brake shield. Due to this, the distance of the shoes is set to the smallest value. To move the segment, insert a screwdriver between the finger and the segment and turn it in the direction of the arrow. Top view of the brake.
5. Insert the brake pads first at the bottom, opposite the wheel cylinder. Install the adjusting device from above between the shoes and at the same time install the shoes on both sides of the wheel cylinder.
Attention! Do not load the wheel cylinder on one side only, otherwise the piston will be pressed out on the other side.
6. Attach the handbrake cable to the lever.
7. Install the rear and front shoes on the brake shield and secure with the fastening pin and clamping spring. While holding the pin from behind, simultaneously press the spring with pliers and turn it 90°.
8. Check the operation of the automatic adjustment device. To do this, depress the brake pedal 2-3 times (assistant). In this case, the adjusting segment must move. If this does not happen, then the brake pads were not installed correctly.
9. Set the adjuster to the shortest adjustable length.
10. Install the brake drum and screw on new nut hubs.
11. Adjust the play of the hub bearing.
Attention! Lock the nut after adjustment, see chapter Suspension and steering system.
12. Screw on the wheel, while following the mark on the hub. Lower the vehicle and tighten the wheel nuts crosswise with force 100 Nm.
13. Adjust the main clearance of the rear brakes with a few presses of the brake pedal. At the same time, clicks are heard in the brake.
14. Adjust the handbrake.
15. Carry out test braking at medium speed on a road free from traffic.
Vehicles since 10/89, except model "station wagon"
1 - fastening bolt; 2 - brake drum; 3 - return spring; 4 - fastening pin and spring; 5 - anti-creak spring; 6 - brake shoe; 7 - brake shoe; 8 - thrust spring and bracket; 9 - return spring; 10 - hand brake cable; 11 - drive lever; 12 - brake pipeline; 13 - wheel brake cylinder bolt; 14 - wheel brake cylinder; 15 - gasket
lubricate (high temperature paste)
Attention! Remove parts in numerical order. Separate elements of the right and left brakes differ from each other; they cannot replace each other.
Removing
1. Mark the position of the wheel disc relative to the hub so that the balanced wheel can be returned to its original position.
2. Loosen the wheel nuts of the car on the ground.
3. Raise the rear of the car.
4. Remove the wheel.
5. Unscrew the bolt -1- on the brake drum.
6. Release the handbrake and remove the brake drum from the hub. If the brake drum cannot be removed due to running in, the cable on the handbrake lever must first be completely loosened.
7. Before removing the return springs, it is recommended to mark their installation position. This makes their installation easier.
8. Disconnect the upper and lower return springs using a screwdriver or special pliers.
9. Press the compression spring firmly and turn it 90°. While releasing, simultaneously hold the pin behind the brake shield. Remove the pin on the other brake pad in the same way.
10. Disconnect the return spring from the adjustment device.
11. Tilt the brake pads outward and remove them.
Attention! Do not press the brake pedal with the brake pads removed, otherwise the pistons will pop out of the wheel brake cylinder. Insert pistons, see Section Wheel Brake Cylinder Repair.
12. Disconnect the handbrake cable from the adjustment device -11- using a screwdriver. Remove adjustment device.
13. Remove boot -5- on wheel brake cylinder.
Attention! In this case, the piston should not stretch. Check if there is moisture behind the boot. If necessary, replace the wheel cylinder.
14. Install boot on wheel cylinder.
Installation
Attention! Be sure to replace all 4 brake pads, even if only one has reached the wear limit. Use pads of the same brand. Clean the brake drum and brake shield with a vacuum cleaner or alcohol. If the wheel brake cylinder is wet, replace it. Lightly lubricate the adjusting device with MoS2 grease. Boring grooved drums, always working on both drums. Brake drums can be bored up to a maximum diameter of 201 mm.
1. Remove minor irregularities and traces of rust with fine sandpaper. If the brake drum has been bored or replaced, the brake pads must be inserted before installation and checked that they have uniform contact with the drum.
2. Clean the contact surfaces between the brake pads and the brake shield, as well as the wheel cylinder and, before installing the pads, coat with a thin layer of heat-resistant grease, preferably with high-temperature copper paste. Also lubricate the contact points of the adjustment device.
Attention! Avoid getting grease on brake pads and linings.
3. Attach the springs to the adjusting device and the brake shoes.
4. Before installing the brake shoes, slide the segment of the adjusting device until it rests against the brake shield. Due to this, the distance of the shoes is set to the smallest value. To move the segment, insert a screwdriver between the finger and the segment and turn it in the direction of the arrow. Top view of the brake.
5. Insert the brake pads first at the bottom, opposite the wheel cylinder. Install the adjusting device from above between the shoes and at the same time install the shoes on both sides of the wheel cylinder.
Attention! Do not load the wheel cylinder on one side only, otherwise the piston will be pressed out on the other side.
6. Install the rear and front shoes on the brake shield and secure with the fastening pin and clamping spring. While holding the pin from behind, simultaneously press the spring with pliers and turn it 90°.
7. Insert the upper and lower return springs into the brake pads using special pliers.
Attention! Make sure the return springs are in the correct position.
8. Attach the handbrake cable to the lever.
9. Check the operation of the automatic adjustment device. To do this, depress the brake pedal 2-3 times (with the help of an assistant). In this case, the adjusting segment must move. If this does not happen, then the brake pads were not installed correctly.
10. Set the adjuster to the shortest adjustable length.
11. Install the brake drum and screw on a new hub nut.
12. Screw on the wheel, while following the mark on the hub. Lower the vehicle and tighten the wheel nuts crosswise with force 100 Nm.
13. Adjust the main clearance of the rear brakes with a few presses of the brake pedal. At the same time, clicks are heard in the brake.
14. Adjust the handbrake.
15. Carry out test braking at medium speed on a road free from traffic.