TM 1-1520-238-23
1-312
1.101.
CRANE ADJUSTMENT – MAIN ROTOR HEAD HOISTING
1.101.1. Hoisting
a. Move sheave (1) to boom (2) position 3.
(1) Move handle (3) up.
NOTE
Use tag lines to move boom.
(2) Turn boom (2) forward until it is about 1 foot
from side of fuselage.
(3) Move handle (3) down.
(4) Remove pin (4) from sheave (1) and boom
(2).
(5) Slide sheave (1) on boom (2). Aline sheave
hole (5) with boom position 3 hole (6).
(6) Install pin (4) through sheave (1) and boom
(2).
b. Adjust boom (2) to yoke (7) position C.
(1) Move handle (3) up.
(2) Turn boom (2) aft until boom is 90 degrees
from side of fuselage.
(3) Move handle (3) down.
(4) Crank boom hoist drum (8) until pin (9) turns
freely.
(5) Remove pin (9) from yoke (7) and boom (2).
(6) Crank boom hoist drum (8). Aline arm X hole
(10) with yoke position hole C (11).
(7) Install pin (9) as far as it will go through yoke
(7) and boom (2).
(8) Crank winch (12) to loosen boom line.
END OF TASK
M04-2234-1
2
1
3
M04-2234-2
6
4
1
2
5
VIEW ROTATED
3
7
2
M04-2234-3
M04-2234-4
8
12
7
10
9
2
11
9
