e.
Remove four nuts (43), lockwashers (2), and capscrews (44) to remove the safety brake housing (45) and gasket
(46). Remove o-ring (47), brake spring housing (48), adjusting nut (49); then disassemble pressure plate (50),
two friction plate (51), and rotor assembly (52).
f.
From the other end of the worm housing, remove four nuts (43), capscrews (53), and lockwashers (2). Now you
can remove the two bearing containers (54) and gaskets (55, 56). Remove grease seal (57). Working from both
ends, remove bearing cups (58) and cones (59), and spacers (60). Remove worm gear (61) and keys (62, 63,
64) from worm shaft (65).
g.
Do not remove nuts (66) and plates (67, 68). Remove fill plug (69) and level plug (70); finally, remove bushing
(73) from housing (72).
4-19.1.2 Cleaning, Inspection, and Repair.
a.
Clean all parts in an approved cleaning solvent. Discard all gaskets, o-rings, and seals each time the winch is
disassembled. Clean the housing thoroughly, checking for metal shavings, dirt particles, or other evidence of
foreign matter in the residue solvent.
b.
Check the worm gear teeth for signs of wear, damage, or distortion caused by overloading. Distorted teeth will
appear to "lean" in one direction. Replace any worm gears that are worn or otherwise damaged.
c.
Check the brake's friction disc and plate for signs of excessive wear and replace excessively worn parts; check
brake spring; replace if tension lost. Check rotor for damage or wear; replace if worn or damaged.
d.
Check bushings and bearing surfaces for scratches, scoring, or pitting; replace damaged bearings. Do not spin
bearings that have not been lubricated.
e.
Replace any damaged or badly worn parts.
4-19.1.3 Assembly.
a.
Assemble the keys (62, 63, 64) onto the worm shaft (65). Install the worm gear (61), then assemble spacers
(60), bearing cones (59) and cups (58) onto the shaft. Position the assembled shaft in the housing (72); apply a
small amount of lubricant to and install gaskets (55, 56) on the housing; then install bearing containers (54).
Fasten the back end container with capscrews (53), lockwashers (2), and nuts (43).
b.
On the front end of the housing, install the brake parts: rotor assembly (52), friction discs (51), pressure plate
(50), brake spring assembly (48), and adjusting nut (49). Install o-ring (47), gasket (46), and safety brake
housing (45), fastening the housing with capscrews (44), lockwashers (2), and nuts (43).
c.
Install bushing (73) in housing, and bushing (39) in worm gear (41). Install shaft (42) in housing; then install
worm gear (41) onto shaft. Install new gasket (40) and cover (38). Fasten cover with capscrews (36) and
lockwashers (37).
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