Manitowoc Grove GMK6300L Operating Manual page 693

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Operating Manual GMK6300L
Risk of damage to the boom system!
If extending and retracting several times does not lead to the lock being
released, you must not telescope any further against the stop.
If removing the load does not cause the lock to be released, you must lock
the telescoping cylinder (
If symbol (1) is still flashing after approx.
10 seconds, this means that the locking pins
are under load.
•
Release the control lever.
The display (2) shows which movement you
need to carry out to take the load off:
– A: Retracting
– B: Extending
à
p. 11 - 83) and then restart unlocking.
3 112 xxx en
Crane operation
11.3 Crane operation with main boom
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11 - 81