EMERGENCY OPERATION OF CRANE
RELEASING BOOM WINCHBRAKE
Releasing boom winch brake will allow a
suspended load to be lowered and boom
winch wire rope to be unwound from winch
Make sure all personnel stand
clear of any suspended load
when releasing boom winch
Pull boom winch brake pressure selector
valve (1) out. Place winch shift lever (2)
Operate hydraulic ram hand
pump slowly to control descent
. rate of load.
Operate hydraulic ram hand pump (3)
slowly until boom winch brake is re-
leased and load is lowered to ground.
Disconnect wire rope from load.
Roll up wire rope and stow securely on
Push brake pressure selector valve (1) in
when load is on ground and wire rope is
secure. This will set winch brake.
1 If a load is supported by boom, release
boom winch brake before attempting to
lower boom. Refer to page 2-88.
2 Remove two screws (1) and washers (2)
securing cover (3) over boom cylinder
bypass valve and remove cover. The
cover is on deck behind and to left of .