TM 55-1520-240-23-1
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INSTALL HOISTING UNIT
(Continued)
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30.
Remove hook (44) from stowed position.
31.
Turn azimuth control handle (36) and position jib
boom (37) over right side of helicopter.
32.
Turn winch handle (45) DOWN and lower hook
(44) about three feet from ground. Down
direction is indicated on winch handle (46).
33.
Have helpers position mast and boom (47) on
ground beside helicopter under jib boom with
trolley and hook (48) forward.
34.
Attach rope guide lines (49) to both ends of mast
and boom (47).
35.
Attach jib boom hook (44) to bracket (50) on mast
and boom (47). If hook does not fit, use a nylon
or wire cable loop between hook and bracket.
Raise mast and boom slowly and
carefully to prevent damage which
otherwise might result from mast and
boom hitting helicopter.
36.
Hoist (raise) mast and boom (47) above
helicopter. Have two helpers guide mast and
boom with guidelines (49).
37.
Rotate jib boom (37) with azimuth control handle
(36) until mast and boom (47) is positioned
directly over center of fuselage (2).
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