OPERATING PROCEDURES GRT655/655L OPERATOR MANUAL
4-28 Published 3-23-2020, Control # 654-04
Dual Axis Controllers
1. Press the Swing Enable/Disable Switch to enable the
swing function.
The Swing Enable Indicator (42, Figure 4-18 and
Figure 4-19) will come on (green).
2. Push controller on left armrest to the right and hold to
swing right (rotates turntable clockwise) or push
controller to the left and hold to swing left (rotates
turntable counterclockwise).
3. To stop swinging, let controller return to the center
(neutral) position and apply the swing brake with the
Swing Brake Pedal (refer to Swing Brake Pedal,
page 3-18).
Single Axis Controller (Optional)
1. Press the Swing Enable/Disable Switch to enable the
swing function.
The Swing Enable Indicator (42, Figure 4-18 and
Figure 4-19) will come on (green).
2. Push outer controller on left armrest forward and hold to
swing right (rotates turntable clockwise) or pull controller
rearward and hold to swing left (rotates turntable
counterclockwise).
3. To stop swinging, let swing controller return to the center
(neutral) position and apply the swing brake with the
Swing Brake Pedal.
Elevating and Lowering the Boom
Elevating the Boom
Dual Axis Controllers
1. Press the Boom Lift Enable/Disable Switch to enable the
boom lift function.
The Boom Lift Enable Indicator (44, Figure 4-18 and
Figure 4-19) will come on (green).
2. Push controller on right hand armrest to the left and hold
to raise the boom.
3. When boom angle gets to the desired elevation, let
controller return to the center (neutral) position to stop
boom lift function.
Single Axis Controller (Optional)
1. Press the Boom Lift Enable/Disable Switch to enable the
boom lift function.
The Boom Lift Enable Indicator (44, Figure 4-18 and
Figure 4-19) will come on (green).
2. Pull inner controller on right armrest rearward and hold
to raise the boom.
3. When boom angle gets to the desired elevation, let
controller return to the center (neutral) position to stop
boom lift function.
Lowering the Boom
DANGER
Crushing Hazard!
Keep area above and below boom clear of all obstructions
and personnel when elevating the boom.
DANGER
Crushing and/or Tipping Hazard!
Keep area beneath boom clear of all obstructions and
personnel when lowering boom.
Long cantilever booms can create a tipping condition,
even when unloaded in an extended, lowered position.
DANGER
Two-Block Hazard!
To avoid death or serious injury, keep load handling
devices away from tip of boom or boom extension when
extending or lowering the boom and when hoisting up.
When lowering boom, simultaneously let out hoist rope to
prevent two-blocking the boom nose and the hook block.
CAUTION
The closer the load is carried to the boom nose, the more
important it becomes to simultaneously let out hoist rope
as boom is lowered.
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