Table 4-1. Unit Preventive Maintenance Checks and Services for Clothing Repair Shop.
NOT FULLY MISSION
ITEM TO CHECK/
Inspect button machine head for
Broken or missing
dirty surface and grease deposits,
for bent, broken, loose, or missing
components; and for loose
mounting. Inspect needle for
broken or excessively worn point
and for bent or broken shaft. Refer
to paragraph 2-13 to replace a
Inspect thread unwinder for loose or
Missing or broken
missing bolts, nuts, and screws and
for bent or broken components.
Replace defective parts, as required
(para. 2-8 and 2-18).
Drive belt and
Inspect for broken, frayed, and
Broken, loose or
excessively worn drive belt. Inspect
too tight belt
belt for loose mounting on the
pulleys. Inspect pulleys for cracked,
chipped, or broken edges and for
loose mounting. Check for a 1/2
inch deflection of the belt midway
between the pulleys (para. 3-10).
Tilt machine head on one side and
inspect for broken looper point.
Inspect looper, needle guide, and
thread finger for improper
adjustment (para. 4-49).