Manitowoc Grove GRT880 User Manual

Grove Published 3-25-2020, Control # 643-04 4-23
GRT880 OPERATOR MANUAL SET-UP AND INSTALLATION
4
Removing
Refer to Figure 4-23.
1. Position crane on a firm level surface. Fully extend and
set outriggers.
2. Place superstructure in normal travel position with
counterweight centered at rear of vehicle. Engage
turntable lock.
3. Remove locking pins from lock cylinder rods on each
side of superstructure.
4. Press and release Enable button (2). Press and hold
Lock Cylinder Retract button (4) until lock cylinder rods
are completely retracted.
5. Check area is clear around counterweight and carrier
rear deck. Press horn button (3).
6. Press and release Enable button (2). Press and hold
Left (6) and Right (7) Counterweight Cylinder Lower
buttons until counterweight is completely lowered on
centering pins and rear deck.
7. Remove lock pins and retaining pins from lift cylinders
and counterweight.
NOTE: Operate left or right cylinder as needed to remove
pins.
8. Press and release Enable button (2). Press and hold
Left (8) and Right (9) Counterweight Cylinder Lift buttons
until cylinder rods are completely retracted. Reinstall
retaining pins and lock pins.
NOTE: Do not leave cylinder rods extended. Corrosion or
other damage may occur.
NOTE: Counterweight weighs 9,979 kg (22,000 lb).
9. Release turntable lock. Rotate superstructure 90° for
clear access to rear deck.
10. Lift counterweight from carrier deck to transport vehicle.
11. Select proper “Without Counterweight” operating code
on the RCL.
Installing
Refer to Figure 4-23.
1. Position crane on a firm level surface. Fully extend and
set outriggers.
NOTE: Counterweight weighs 9,979 kg (22,000 lb).
2. Rotate superstructure 90° for clear access to rear deck.
3. Lift counterweight from transport vehicle and position on
rear deck centering pins.
4. Place superstructure in normal travel position with
counterweight centered at rear of vehicle. Engage
turntable lock.
5. Remove lock pins and retaining pins from lift cylinders.
6. Press and release Enable button (2). Press and hold
Left (6) and Right (7) Counterweight Cylinder Lower
buttons until cylinder rod ends engage counterweight.
7. Install lock pins and retaining pins in lift cylinders and
counterweight.
NOTE: Operate left or right cylinder as needed to install
pins.
8. Press and release Enable button (2). Press and hold
Left (8) and Right (9) Counterweight Cylinder Lift buttons
until counterweight engages superstructure and lock
cylinder holes are aligned with lock cylinder rods on both
sides.
NOTE: Operate left or right cylinder as needed to align lock
cylinder holes with lock cylinder rods.
9. Press and release Enable button (2). Press and hold
Lock Cylinder Extend button (5) until lock cylinder rods
are completely extended.
10. Install locking pins in counterweight lock cylinder rods on
each side of superstructure.
11. Adjust four counterweight bolts and jam nuts to provide a
consistent stop and proper alignment with pinning holes.
12. Select proper counterweight operating code on the RCL.
13. Crane is now ready for operation with counterweight
installed.
DANGER
Travel is not permitted with removable counterweight on
carrier deck.

Manitowoc Grove GRT880 Specifications

General

Brand	Manitowoc
Model	Grove GRT880
Category	Construction Equipment
Language	English