TM 1-1520-238-23
1-279
1.87.
HOISTING – MAIN ROTOR GEARSHAFT REMOVAL – continued
NOTE
Use tag line to control gearshaft.
d. Tie 20-foot tag line to bottom center of gear-
shaft.
e. Position main rotor gearshaft over main rotor
gearshaft mount fixture (10).
(1) Rotate handle (3) to up position to allow later-
al movement of boom arm (4).
(2) Use two tag lines (5) to move boom arm (4).
(3) Turn boom arm (4) to aline gearshaft over
fixture (10).
(4) Rotate handle (3) to down position to prevent
lateral movement of boom arm (4).
f. Lower gearshaft to fixture (10).
(1) Crank winch (7) and slowly lower gearshaft
on fixture.
g. Release tension on lifting cable.
(1) Crank winch (7) down to position hook (1)
below top of gearshaft.
h. Retract hook (1).
(1) Unsnap hook (1) from hoisting ring (6).
(2) Crank winch (7) to position hook (1) about 6
inches below boom sheave (11).
END OF TASK
3
7
1
6
M04-2244-2
4
11
5
10
