Manitowoc Grove GRT8100

OPERATING CONTROLS AND PROCEDURES GRT8100 OPERATOR MANUAL
3-74 Published 3-25-2020, Control # 595-10
3. Repeat steps 1 and 2 until crane is resting on all wheels
and outrigger jack pads are several inches off the
ground.
4. Release locking levers and allow outrigger pads to drop
to the ground.
5. Continue to retract jacks until fully retracted.
6. Use screen buttons or jog dial with Outrigger Function
Enable Switch to select and retract each outrigger
beam. Refer to Stowing the Mid-Extend Lock Pin below
if crane was operated at mid-extend position.
NOTE: More than one outrigger beam may be retracted at
a time.
7. Stow outrigger pads Figure 3-32.
Stowing Mid-Extend Lock Pin
NOTE: If lock pin is wedged in outrigger beam hole, it may
be necessary to jog outrigger extend/retract switch
slightly while pulling upward on pin.
Swinging Superstructure
To swing boom, activate Swing Enable Switch, push control
lever on left hand armrest to the right for right swing (rotates
turntable clockwise), or left for left swing (rotates turntable
counterclockwise). Always operate control lever with a slow,
even pressure.
NOTE: Swing brake activates automatically when control
lever is returned to the stop or neutral position to
prevent further rotation.
Elevating and Lowering Boom
Elevating Boom
Item Description
1 Outrigger Pad Assembly
2 Quick Pin with Lanyard
3 Rubber Bumper
4 Cotter Pin
2
1
4
FIGURE 3-32
3
8751
DANGER
Crushing Hazard!
Death or serious injury could result from being crushed by
moving machinery. Before activating swing, sound
steering wheel horn and verify all personnel are clear of
rotating and moving parts.
Keep area beneath boom clear of all obstructions and
personnel when lowering boom.
The operator must select proper load chart and RCL
program for outrigger position selected.
CAUTION
Never push or pull swing control lever through neutral to
the opposite direction to stop swing motion. Automatic
swing brake is activated by the control lever to stop swing
rotation.
DANGER
Crushing Hazard!
Keep area above and below boom clear of all obstructions
and personnel when elevating the boom.