Manitowoc Grove GRT9165

OPERATING PROCEDURES GRT9165 OPERATOR MANUAL
4-38 Published 7-23-2020, Control # 668-02
Unlocking the Telescopic Section
Unlocking a telescopic section is required for the telescopic
section to be telescoped.
The telescoping cylinder and the telescopic section cannot
be unlocked simultaneously.
Prerequisites
Telescoping function enabled – symbol (3, Figure 4-29)
green
Telescopic section locked – symbol (1) green
Telescoping cylinder locked – symbol (2) green
Unlock
1. Select the symbol (4, Figure 4-29).
2. Confirm the selection – the locking pins will retract.
Symbol (2, Figure 4-30) red.
If symbol (2) is not red after approx. 10 seconds, this means
that the locking pins are under load.
To relieve the load, carefully retract and extend a little.
If removing the load does not cause unlocking, you must lock
the telescopic section (Locking the Tele Section, page 4-39)
and restart unlocking.
Telescoping the Tele Section
The tele section can be telescoped once it is unlocked.
Prerequisites
• Telescoping mechanism enabled – symbol (3,
Figure 4-31) green
• Telescoping cylinder locked – symbol (2) green
• Telescopic section unlocked – symbol (1) red
FIGURE 4-29
10085-8
3
2
1
4
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 4-30
10085-9
2
FIGURE 4-31
10085-9
3
2
1