TM 1-1520-238-23
1-281
1.88.
HOISTING – MAIN ROTOR GEARSHAFT INSTALLATION – continued
NOTE
Use tag line to control gearshaft.
c. Position gearshaft (2) over static mast (8).
(1) Crank winch (7) to hoist gearshaft (2) higher
than top of rotor head (9).
(2) Rotate handle (3) to up position to allow later-
al movement of crane boom arm (4).
(3) Use two tag lines (5) to move boom arm (4).
Turn boom arm (4) to aline gearshaft (2) over
mast (8) on rotor head (9).
(4) Rotate handle (3) to down position to prevent
lateral movement of boom arm (4).
d. Install gearshaft (2) on mast (8).
(1) Crank winch (7) down and carefully insert end
of gearshaft (2) into mast (8).
(2) Remove tag lines from gearshaft (2).
(3) Insert gearshaft (2) on mast (8).
e. Remove hook (1) from gearshaft (2).
(1) Release tension on lifting cable. Crank winch
(7) down to position hook (1) just above gear-
shaft (2).
(2) Unsnap hook (1) from ring (6).
f. Retract hook (1).
(1) Crank winch (7) to position hook (1) about 6
inches below boom sheave (10).
END OF TASK
4
8
1
6
2
7
M04-2245-2
3
10
5
9
