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TM 9-2320-364-10
1-35
c.
Remote Control. The remote control system (6) is designed to operate the crane
while standing away from the truck. The operator can operate the remote control
anywhere within 35 ft. (10.7 m) of the crane base. The remote control is provided with
an emergency shutdown capability and designed so that when activated, all remote
control crane functions cease and engine speed is reduced to idle. The remote control
functions match the control levers on the fixed control excluding mast and outrigger jack
controls.
d.
Overload Shutdown. The crane is provided with an overload shutdown which
prevents structural overloading. Two block and overload conditions are sensed through
line-pull of the hoist. A preprogrammed microprocessor that is constantly comparing
boom angle, boom length and hoist line pull, activates solenoid valves to prevent
telescope out, lift up, lift down, and hoist up functions when unit is overloaded or
two-blocked. During an overload condition the crane’s functions cease except for hoist
down, telescope in and swing in either direction. The outrigger jack and mast functions
are still operational.
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