TM 9-2350-238-10
EMERGENCY OPERATION OF CRANE
AND SPADE–CONTINUED
LOWERING BOOM–CONTINUED
Make sure all personnel stand
clear of boom.
3 To lower boom, open boom cylinder
bypass valve (4) by slowly turning han-
dle (5) clockwise.
4 When boom is completely lowered, close
boom cylinder bypass valve (4) by turn-
ing handle (5) counterclockwise, Position
cover (3) and secure with two screws
(1) and washers (2).
RELEASING TOW WINCH BRAKE
Releasing tow winch brake will release wire
2 Operate hydraulic ram hand pump (3)
rope tension and allow tow winch wire rope
slowly until tow winch brake is released
to be unwound from winch drum.
Make sure all personnel stand
clear of any load supported by
wire rope which may roll free
when releasing tow winch
brake.
1 Pull tow winch brake pressure selector
valve ( 1 ) out. Place winch shift lever (2)
in neutral.
NOTE
Operate hydraulic ram hand
pump slowly to control release
rate of load.
and load is secured.
NOTE
Make sure tension has been
released from wire rope.
3 Disconnect wire rope from load.
4 Raise and secure level wind (4) to boom.
5 Roll up wire rope and stow securely on
vehicle deck.
6 Push brake pressure selector valve ( 1 ) in
when load is secure. This will set winch
brake.
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