OPERATING CONTROLS GRT655/655L OPERATOR MANUAL
3-12 Published 3-23-2020, Control # 654-04
Boom Lift/Main Hoist Controller (Dual Axis)
The Boom Lift/Main Hoist Controller (1, Figure 3-8) is located
on the right armrest. Pushing the control lever to the right
lowers the boom or pushing the controller to the left raises
the boom.
When used for the main hoist, pushing the control lever
forward lowers the hoist rope or pulling the controller
rearward raises the hoist rope.
Moving the controller in a diagonal direction actuates the two
functions simultaneously.
Swing/Telescope or Swing/Auxiliary Hoist
Controller (Dual Axis)
The Swing/Telescope or Swing/Auxiliary Hoist Controller (2,
Figure 3-8) is located on the left armrest. The controller
controls swing and telescope functions when crane is not
equipped with an auxiliary hoist.
When equipped with an auxiliary hoist, the controller controls
swing and auxiliary hoist functions. Telescope functions are
then controlled through a foot pedal.
If not equipped with an auxiliary hoist, pushing the controller
to the left or right provides 360 degree continuous rotation of
the superstructure in the desired direction. Pushing the
controller forward extends the boom and pulling the
controller rearward retracts the boom.
If equipped with an auxiliary hoist, pushing the controller
forward lowers the hoist rope and pulling the controller
rearward raises the hoist rope.
Moving the controller in a diagonal direction actuates the two
functions simultaneously.
Main Hoist Enable/Disable Switch
The Main Hoist Enable/Disable Switch (3, Figure 3-8) is a
momentary switch that is located on the right armrest.
Pressing the switch one time enables the main hoist and
pressing the switch again disables the main hoist. Pressing
the switch twice rapidly enables the main hoist at high speed.
Pressing and holding the switch for approximately 2 seconds
also enables high speed.
The Main Hoist Enable/Disable Indicator (45, Figure 4-18
and Figure 4-19) on the Operating Display Module (ODM)
comes on (green) when the main host function is enabled
and it goes off when the main hoist function is disabled.
The Main Hoist High Speed Indicator (45, Figure 4-18 and
Figure 4-19) on the Operating Display Module (ODM) comes
on when the high speed function is enabled.
Boom Up Bypass Switch
The Boom Up Bypass Switch (4, Figure 3-8) is a momentary
two-position rocker switch that is located on the right
armrest. While lift function is enabled and in a RCL lock out
condition, pressing and releasing the Boom Up Bypass
Switch will enable boom lift up.
The following indicators come on to indicate the limiter is
bypassed:
• Bypass 2 Pressed Indicator (3, Figure 4-90) is on
constant (only when switch is pressed)
• RCL Bypass Active Indicator (2, Figure 4-90) is on
constant
• RCL Shutdown Warning Indicator (5, Figure 3-5) is on
constant when capacity is greater than 100%
For CE certified cranes only, the speed of the boom up
function is reduced by 50% when actuated. For non-CE
Certified cranes, the boom up function operates at normal
speed when actuated.
The boom up function lock out is bypassed until one of the
following occurs:
• Boom Up Bypass switch is again pressed and released
while controllers are in neutral position
• Boom up controller is in neutral position for 10 seconds,
and load is greater than 90% capacity and less than or
equal to 100% capacity
• Load is reduced to less than 90% of capacity
Boom Lift Enable/Disable Switch
The Boom Lift Enable/Disable Switch (5, Figure 3-8) is a
momentary switch that is located on the right armrest.
Pressing the switch one time enables boom up and boom
down and pressing the switch again disables boom up and
boom down.
The Boom Lift Enable/Disable Indicator (44, Figure 4-18 and
Figure 4-19) on the Operating Display Module (ODM) comes
on (green) when the boom lift function is enabled and it goes
off when the boom lift function is disabled.
Jog Dial
The Jog Dial (6, Figure 3-8) is located on the right armrest. It
is used to select and perform functions through the Operator
Display Module (ODM) and the Rated Capacity Display
Module (RCM). (Refer to Navigating the Operator Display
Module and Rated Capacity Limiter Display Module,
page 4-34 for more information on its operation).
Outrigger Extend/Retract Switch
The Outrigger Extend/Retract Switch (7, Figure 3-8) allows
the operator to extend and retract the outrigger beams and
jacks. The switch is used in combination with the Outrigger
Group screen on the Operator Display Module (ODM) to
deploy and stow the outriggers (refer to Outrigger Group,
page 4-55).
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