AR42.10-A-1090A | Checking brake drum and brake linings for wear | 2.12.04 |
MODEL NAB372.124 with FRONT AXLE 733.201 /015 with REAR AXLE 745.800
MODEL NAB372.317 with FRONT AXLE 733.015 with REAR AXLE 745.800
1 | Remove wheels | ||
2 | Detach brake drum | Perform step on each wheel brake. | |
| Measure | ||
3 | Measure wear limit of brake drum | If the wear limit measurement is exceeded, replace all brake drums on the axle: | |
Remove/install brake drum | |||
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| Check | ||
4 | Inspect surface condition of friction surface of brake drum | If the surface quality of the friction surface of the brake drum is poor, determine the suitable permissible repair stage and machine all the brake drums on the axle to the determined repair stage. | |
5.1 | Check lining thickness of brake shoes | Do this if the brake drum has not been machined. The wear limit of the brake shoes is marked by a stepped edge on the brake lining. If the wear limit is reached the brake shoes must be replaced subject to separate repair order: | |
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Removing and installing brake shoes | |||
5.2 | Install brake shoes of a suitable repair stage | Do this if the brake drum has been machined: | |
Removing and installing brake shoes | |||
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Skim down brake shoes to new diameter of brake drum minus play. | |||
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6 | Install brake drum | ||
7 | Mount wheels. |
Test values for drum brake
Number | Designation | Model | Model | ||
BE42.10-N-1001-12A | Brake drum diameter | Normal | mm | 410 (+0.2) | 410 (+0.2) |
Repair size I | mm | 411.5 (+0.2) | 411.5 (+0.2) | ||
Repair size II | mm | 413 (+0.2) | 413 (+0.2) | ||
Wear limit | mm | 414 | 414 | ||
Test and adjustment values for brake shoes
Number | Designation | Model | Model | ||
BE42.10-N-1001-13A | Brake lining thickness | Regular (A) | mm | 18 | 18 |
Minimum lining thickness (B) | mm | - | - | ||
Repair size I | mm | 19 | 19 | ||
Minimum lining thickness (B) | mm | - | - | ||
Repair size II | mm | 20 | 20 | ||
Minimum lining thickness (B) | mm | - | - | ||
See picture in | - | - | |||
Workshop equipment
WE58.40-Z-1005-07A | Brake lining turning device |
WE58.40-Z-1006-07A | Brake drum machine/Brake disk machine |
WE58.40-Z-1005-19A | Brake drum caliper gauge |