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1. On early models to disconnect block clamp springs from a brake board of a drum brake, using the tool, similar shown on a photo. The tool can be manufactured independently, using the screw-driver with a cut in an edge. |
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2. To push the special tool in the center of a spring and to unhook a spring hook from a brake board. |
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3. On later models, using flat-nose pliers, to remove block spring clamp heads, pressing and turning them on 90 °. |
4. After removal of heads to lift springs and to take clamp pins. |
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5. By means of the lever to remove brake shoes from their lower holder on a brake disk. |
6. To remove the lower taking-away spring. |
7. To wring out both blocks from the wheel brake cylinder and to remove them. At the same time not to damage boots. |
8. To disconnect a cable of the drive of the emergency brake from a brake shoe. For prevention of drop-out of pistons of the working brake cylinder to fix pistons by the corresponding elastic band or a wire. |
9. To note an arrangement of details of the regulator of brake shoes, to remove the lever of the drive of the emergency brake and to disconnect the fixing regulator bolt spring from a lobby (on an arrangement) a brake shoe. |
10. To disconnect the top returnable spring, to separate a front brake shoe and a returnable spring from a back brake shoe. |
11. To disconnect the spring fixing the regulator to a back brake shoe. |
12. To replace all returnable springs irrespective of their state. |
13. To install the lever of the emergency brake on a new brake shoe and to fix it by a new bracket of fastening. |
14. To take a regulator bolt from a rack and to carefully investigate a rack on wear and damages. |
Prevention
The left and right racks are not interchangeable and designated by "G" and "D" respectively. Rack regulator bolts are also not interchanged; the left bolt of a rack has the left carving, and the right bolt the right carving.
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15. It is correct to place the regulator. |
16. To check that all elements on the end of a rack are correctly placed, then to apply lubricant with high temperature of melting on a regulator bolt carving. |
17. To screw a regulator wheel on a bolt so that between a ring and a head of a bolt there was a small gap, and to establish a bolt in a rack. |
18. To establish a returnable spring on back (on an arrangement) a brake shoe so that shorter hook of a spring connected to a block. |
19. To establish an adjusting level by the end of a spring. |
20. To insert an adjusting level into a groove in a back brake shoe. |
21. To establish the top returnable spring on a back brake shoe. |
22. To establish the second end of a spring on a front brake shoe and moving, to arrange a forward block so that the head of an adjusting bolt settled down in a flute. |
23. After that to insert a hook of the fixing spring into a groove on a front brake shoe. |
24. To raise rubber protective covers of the brake cylinder and to check the working brake cylinder for leak of brake fluid. |
25. To clear details of a back brake. |
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26. To apply lubricant with high temperature of melting on places of contact of blocks with a brake board. |
27. To check that the lever of the emergency brake is located opposite to an edge of a back brake shoe and to remove the elastic band fixing pistons in the brake cylinder. |
28. To stretch brake shoes and to establish their top ends on the piston of the working brake cylinder. |
29. To connect a cable of the emergency brake to the lever of the emergency brake located on a back brake shoe. |
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30. To establish the lower returnable spring on both brake shoes and to establish the lower part of brake shoes on a support of blocks. |
31. Moving brake shoes, to center them in relation to a brake board. |
32. To establish pins of a clamp of a block, a spring and a head of fastening of a spring. |
33. Using the screw-driver, to turn a wheel of an adjusting level so that to unclench brake shoes to a contact of the brake drum. |
34. To install the brake drum. |
35. To make replacement of brake shoes on the second back wheel. |
36. After replacement of brake shoes to adjust a gap between them and the brake drum for what several times to press a brake pedal. When pressing a pedal, during the normal work of an adjusting level, the clicks published by an adjusting level have to be heard. |
37. To check and if it is necessary, to adjust the emergency brake. |
38. To check the level of brake fluid in system. |