DRUM AND ROTOR REPAIR.
This task covers:
a. Drum Repair
b. Rotor Repair
l Drum or rotor removed.
l Abrasive cloth (Item 17, Appendix B)
(See TM 9-2320-289-20)
General Safety Instructions
DO NOT use a drum or rotor that
will not meet minimum wear
DO NOT use a drum that will not meet minimum wear specifications.
Failure to follow this warning may result in brake failure and serious injury
or death to personnel.
Measure drum for out-of-round, taper, and wear. Take measurements at open and closed
edges of machined surface, and at right angles to each other. If drum measures more than
11.240 in. (285.50 mm) (M1009) or 13.090 in. (332.49 mm) (all except M1009), discard
If brake linings are not being replaced, drum can be polished with fine
abrasive cloth but should not be machined.
If drum is grooved, out-of-round, tapered, or badly worn, machine drum using Table 7-1
M o d e l
M 1 0 0 9
M 1 0 0 9
Table 7-1. Drum Diameters
11.150 in. (283.21 mm)
11.210 in. (284.73 mm)
11,240 in. (285.50 mm)
13,000 in. (330,20 mm)
13.060 in. (331.72 mm)
13.090 in. (332.49 mm)
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