Crane operation
10.5 Crane operation with main boom
10 - 106 3 302 633 en Operating Instructions GMK5250L
27.09.2017
Unlocking the tel-
escopic 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 mechanism on – symbol (3)
green
– Telescopic section locked – symbol (1) green
– Telescoping cylinder locked – symbol (2)
green
Unlocking
• Select the symbol (1).
• Confirm the selection – the locking pins will
retract. Symbol (2) 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.
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