TM 55-1930-209-14&P-21
(6)
Loosen brake band guide bolts and cam roller(s) enough to remove brake bands.
(7)
Slowly release air pressure on parking brake air chamber. Then remove pin attaching live end of brake
band to brake actuating arm.
(8)
Remove dead end of band in a similar manner.
(9)
Remove pin from brake actuating chamber clevis.
(10)
Refer to Figure 5-46 and remove four hex bolts, clip washers and nuts that mount brake actuating arm to
winch frame. Remove swivel lube line to live end brake band pin. Remove brake arm.
(11)
Remove hex nuts and lock washers that mate brake air chamber to winch frame.
(12)
Remove air line to brake chamber.
(13)
Loosen jam nuts on brake connecting rod and disconnect hex sleeve while removing air chamber.
(14)
Remove hex nuts and lockwashers that mount parking brake air chamber. Remove chamber.
d.
Brake band inspection and repair
(1)
Inspect cam roller(s) and brake band guide bolts. Remove and replace with new parts if these items are
damaged.
(2)
Clean all remaining parts with cleaning solvent and dry thoroughly. Do not immerse the air chamber in
solvent.
(3)
Inspect brake actuating arm and shaft. Pay particular attention to end of shaft that enters bushing in winch
frame. If either bushing or shaft show signs of excessive wear or other damage proceed as follows:
(a)
Remove hex head retaining bolt, washer, and lockwasher from winch frame.
(b)
Remove retaining ring and knock bushing out of frame using a suitable drift.
(c)
Reinstall a new bushing in reverse sequence of removal procedure.
NOTE
Use a soft hammer as necessary to seat the new bushing.
(d)
Use a 400 grit or finer emery cloth to polish light scoring from end of shaft that is seated in bushing.
If scoring cannot be polished out replace brake actuating arm assembly.
(4)
Inspect brake arm assembly as follows:
(a)
Inspect connecting pin holes for signs of excessive wear. Look for signs of elongation of holes.
(b)
Rotate arm around bearing and check for signs of binding, loose bearings or other damage.
(c)
If damage is noted proceed as follows, and remove hex screw and nut holding each of brake arms
on shaft and remove the arms.
5-110
