Manitowoc Grove GRT880 User Manual

Grove Published 3-25-2020, Control # 643-04 3-75
GRT880 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
3
not lock out the crane or select a different chart based on
outrigger position.
Engaging the Mid Extend Lock Pin
NOTE: It may be necessary to jog the outrigger extension/
retraction switch slightly to ensure proper pin
engagement.
1. With outriggers fully retracted, turn locking pin 90° from
its stowed position and allow pin to slip into the lug on
the jack beam. If pin will not slip into the lug, slowly
extend or retract the outrigger beam, allowing locking
pin to drop into the lug.
2. Slowly extend or retract outrigger beam, allowing locking
pin to drop into the hole in top of the outrigger beam,
engaging outrigger beam at the desired length.
Stowing the Outriggers
NOTE: To enable outrigger functions, crane must be in four
wheel drive, parking brake must be engaged, and
swing must be off.
1. Use screen buttons or jog dial with Outrigger Function
Enable Switch to select left or right rear outrigger on the
CCS screen. Retract until rear jacks have adequate
clearance.
2. Use screen buttons or jog dial with Outrigger Function
Enable Switch to select left or right front outrigger on the
CCS screen. Retract until front jacks have adequate
clearance.
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 3-30.
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.
DANGER
Keep feet and hands clear of outrigger pads when
unlocking the pads from the jacks.
Item Description
1 Outrigger Pad Assembly
2 Quick Pin with Lanyard
3 Rubber Bumper
4Cotter Pin
2
1
4
FIGURE 3-30
3
8751

Manitowoc Grove GRT880 Specifications

General

Brand	Manitowoc
Model	Grove GRT880
Category	Construction Equipment
Language	English