Manitowoc Grove GRT8120, Operator'S Manual

Page: 150 / 448

OPERATING PROCEDURES GRT8120 OPERATOR MANUAL
4-20
Published 3-22-2021, Control # 702-02
- Disable all crane functions
- Fully lower cab
2. Position the outrigger pads directly out from each
outrigger to where the outriggers will be properly
extended.
3. If required, extend the outrigger beams to the
mid-extend (50%) or fully extended (100%) position
using the Outrigger Extend/Retract Switch and the
Operator Display Module (ODM) (Refer to
Extending/Retracting the Outriggers Beams , page
4-101).
Each outrigger beam is equipped with a length sensor
that shows the extended length of an outrigger beam as
a percentage on the Outrigger Extend/Retract function
screen (Figure 4-94) in the ODM.
If outriggers are to be extended and set at the
mid-extend (50%) position, operator shall do a visual
check to ensure that all four outrigger beams are
extended to the mid-extend stripe (decal) shown on the
side of each beam.
NOTE: More than one outrigger beam can be extended at
a time.
4. Extend the outrigger jacks using the Outrigger
Extend/Retract Switch and the Operator Display Module
(ODM).
Refer to Extending/Retracting Individual Outrigger
Jacks , page 4-102 to operate individual outrigger jacks.
Refer to Extending/Retracting the Outrigger Jacks - x4 ,
page 4-103 to operate the four jacks at the same time.
Extend each outrigger jack until the locking levers of the
pad engage the jack cylinder barrel.
5. Extend the jacks as necessary until all tires are clear of
the ground and crane is level as indicated by the
Inclination indicator located on the ODM screen
(7, Figure 4-94).
Setting the Outriggers Using the Auto-Level
Feature
Start with outrigger beams and jacks retracted.
NOTE: ECO mode does not work when operating the
outriggers.
1. Enable the outrigger functions by doing the following:
- Shift transmission to neutral
- Engage the parking brake.
- Engage four-wheel drive
- Disable all crane functions
- Fully lower cab
2. Position the outrigger pads directly out from each
outrigger to where the outriggers will be properly
extended.
3. If required, extend the outrigger beams to the
mid-extend or fully extended position using the
Outrigger Extend/Retract Switch and the Operator
Display Module (refer
Outrigger Extend/Retract , page
4-99).
NOTE: More than one outrigger beam can be extended at
a time.
4. Extend the outrigger jacks using the Outrigger
Extend/Retract Switch and the Operator Display Module
(refer to
Extending/Retracting Individual Outrigger
Jacks , page 4-102 or Extending/Retracting the
Outrigger Jacks - x4 , page 4-103).
Extend each outrigger jack until the locking levers of the
pad engage the jack cylinder barrel.
DANGER
Tipping Hazard!
All four outrigger beams must be equally deployed to one
of three positions before beginning operation, which
include fully retracted, mid-extend, or fully extended. Do
not operate the crane with the outriggers in any other
position.
DANGER
Tipping Hazard!
Operator must select the proper rigging code from the
load chart and RCL program for the outrigger position
selected. The Outrigger Monitoring System (OMS) will
NOT change the rigging code to match the existing
outrigger position.
DANGER
Tipping Hazard!
All four outrigger beams must be equally deployed to one
of three positions before beginning operation, which
include fully retracted, mid-extend, or fully extended. Do
not operate the crane with the outriggers in any other
position.