| 1. Carefully to clear a brake drum. |
| 2. To measure by a calliper diameter of a working surface of a drum. As much as possible admissible diameter of a drum of 231 mm. If it is necessary to replace diameter of more admissible, a drum. At presence рисок the drum can be chiseled, but taking into account that its definitive diameter of a working surface was no more admissible. |
| 3. As much as possible admissible radial palpation of a drum measured on a working surface, 0,1 mm, and is minimum admissible axial palpation of 0,2 mm. |
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