TM 9-2330-211-14&P
5-14. DRUM (Con't)
ACTION
LOCATION
ITEM
REMARKS
2.
(Con't)
b.
Check for heat discoloration, scoring, warping,
and cracks on braking surface.
Cracked drums must be replaced.
NOTE
Slight scoring can be rubbed out by polishing with
abrasive cloth.
Heavy scoring and out-of-round
conditions must be corrected by turning the drum on a
refinishing lathe.
When one drum on one axle is refinished, the other
drum on that axle must be turned to the same
specification.
3.
Drum (1)
a.
Using micrometer, check runout of braking
surface.
Runout must not be greater than 0.01 in.
(0.254 mm).
b.
Refinish braking surface on lathe if runout
exceeds tolerance.
Replace drum if inside diameter of
braking surfaces is greater that 12.75 in.
(32.385 cm).
FOLLOW-ON MAINTENANCE:
Install drum (paras 4-33).
Adjust brakes (para 4-22).
TASK ENDS HERE
5-15. TIRES
Repair semitrailer tires In accordance with Instructions in TM 9-2610-200-24.
5-19
