Rear left wheel brake mechanism (brake drum removed): 1 – wheel cylinder; 2 – expansion bar; 3 – rear brake shoe; 4 – manual brake pad drive lever; 5 – brake shoe stand; 6 – leaf spring; 7 – Parking brake drive cable; 8 – lower tension spring; 9 – front brake shoe; 10 – adjusting nut; 11 – upper tension spring
You will need:
- wheel wrench
- keys "13" and "27"
- pliers
- screwdriver
- hammer
- jack
- stand
- wheel chocks
Before you start working
Lower the parking brake lever all the way down (the car is released).
Remove the rear wheel.
Recommendations
The manufacturer recommends replacing the grease in the hub bearings when replacing the pads (see subsection 3.36.).
If the brake fluid level in the reservoir is at or near the "MAX" mark, pump out some of the fluid from the reservoir.
The minimum permissible thickness of the friction linings of the brake shoes is 1.5 mm.
Check the condition of the brake shoe linings each time the brake drum is removed.
Replace the pads in the following cases:
- the thickness of the pads is less than 1.5 mm;
- the surface of the linings is oily;
- the pads are not firmly connected to the base;
- the overlays have deep grooves and chips.
Caution: Do not use gasoline, diesel fuel or any other mineral solvents to clean the brakes.
Attention! The brake pads must be replaced in both rear wheels at the same time.
Attention! To replace the pads, we recommend contacting specialists, since the rear wheel hub is made integral with the drum and you will have to replace the grease in the hub bearings and adjust the gaps in them.
1. Clean any dirt from the brake drum and wheel hub cap.
2. While turning the drum, carefully knock off the protective cap of the hub and...
3....take it out.
4. Bend the cotter pin and remove it from the hole in the hub axle.
5. Loosen the hub nut.
6. Remove the thrust washer.
7. Remove the front (outer) hub bearing by gently pushing the drum toward you and then sliding it into place.
8. If the drum is difficult to remove, bring the shoes together by turning the adjusting nut of the expansion bar and knock the drum down with a rubber hammer.
9. Remove the brake drum.
10. Using a screwdriver, remove the upper tension spring.
11. Remove the lower tension spring in the same way.
12. By compressing the leaf springs...
13....turn the struts of both pads and remove the springs.
14. Remove the front shoe and spacer bar.
15. Remove the rear shoe by disconnecting the parking brake cable end from the hand brake shoe lever.
16. Loosen the axle nut of the manual brake shoe drive lever.
17. Please note: there is a spring washer installed under the nut.
18. Remove the spring catch.
19. Remove the hand drive lever from the shoe.
20. Remove the axle from the lever.
21. Install the hand drive lever onto the new rear shoe in the reverse order of removal.
22. Remove the shoe stop with the nut retainer from the expansion bar.
23. Turn the adjusting nut of the brake shoe expansion bar by half the length of its threaded part to increase the length of the bar. This is necessary for ease of assembly, since a short bar will fall out of the slot of the shoes.
24. Lubricate the threaded part of the expansion bar with Litol-24 grease.
25. Install the pads in the reverse order of removal. When installing the spacer bar, note that its flat side should be facing downwards.
26. Use a file to remove the ridge from the brake drum that has formed due to wear.
27. Lubricate the journal with Litol-24 grease.
28. By screwing the adjusting nut onto the expansion bar, bring the shoes together so that they do not interfere with the installation of the brake drum. Install the brake drum and adjust the clearance in the wheel hub bearing (see subsection 3.35.).
29. Adjust the clearances between the brake shoes and the drum (see subsection 3.34.). Install the wheel, check the operation of the parking brake and adjust it if necessary (see subsection 3.37.).