Boom Hoist Control Handle:
See Boom Hoist (Drum 4) Operation on page 3-39
.
The location of the boom hoist control handle can vary depending on crane
configuration. See Handle-to-Drum Identification on page 3-25
.
• Move the handle BACK to RAISE the boom. The boom hoist brake releases
and speed changes in relation to handle movement.
• Release the handle to CENTER to STOP the boom. Speed decreases to off
and the boom hoist brake applies to hold the boom in position.
• Move the handle FORWARD to LOWER the boom. The boom hoist brake
releases and speed changes in relation to handle movement.
NOTE In the setup mode, the boom hoist control handle will simultaneously
raise and lower the mast and pay out or haul in the boom hoist wire rope.
Swing Control Handle:
See Swing Operation on page 3-40
.
• Move the handle to the LEFT to SWING LEFT.
• Release the handle to CENTER to STOP swinging. Swing speed decreases
and the rotating bed slows to a stop. Move the handle in the opposite direction
to stop the swing motion faster.
• Move the handle to the RIGHT to SWING RIGHT.
The swing and travel alarm beeps to warn personnel when the crane is swung.
Item Description
A
Swing holding brake switch: holds the rotating bed in position for
short periods of time. The swing handle is not operable while the
swing holding brake switch is pressed.
• PRESS the switch to APPLY the swing holding brake.
• RELEASE the switch to RELEASE the swing holding brake.
B
Drum rotation indicator: an actuator in the top of the handle moves
up and down to signal the operator by feel that the boom hoist is
turning and how fast.
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