Manitowoc Grove GRT8120 User Manual

Grove Published 3-22-2021, Control # 702-02 4-35
GRT8120 OPERATOR MANUAL OPERATING PROCEDURES
4
The direction of travel to the locking point (Figure 4-22):
If removing the load does not cause the lock to release, the
operator must lock the telescoping cylinder and then restart
unlocking.
Locking the Telescoping Cylinder
The telescoping cylinder must be locked to a telescopic
section so that the telescopic section can be telescoped.
Prerequisites
Telescoping function enabled – symbol (3, Figure 4-23)
green
Telescopic section locked – symbol (1) green
NOTE: Lock command available – symbol (4) orange
Telescoping cylinder unlocked – symbol (2) red
Lock
1. Move the telescoping cylinder to the desired locking
point, e.g. to telescopic section 1 (Figure 4-24).
Wait until the display:
- shows the desired telescopic section (1)
and
- the symbols (2) are shown.
2. Select the symbol (3).
3. Confirm the selection – the locking pins will extend –
symbol (4) green.
1 Extending
2 Retracting
3 At the locking point
CAUTION
Boom System Damage!
If extending and retracting several times does not lead to
the lock being released, you must not telescope any
further against the stop.
FIGURE 4-22
1 2 3
FIGURE 4-23
10254-5
3
2
1
4
10254-7
FIGURE 4-24
10254-5
3
2
1
4

Manitowoc Grove GRT8120 Specifications

General

Brand	Manitowoc
Model	Grove GRT8120
Category	Construction Equipment
Language	English