Malfunctions during crane operation
14.5 Emergency operations and programs
14 - 28 3 302 633 en Operating Instructions GMK5250L
27.09.2017
Unlocking
• (A) – Extend approx. 35 mm (0.11 ft) so that
the cutout (4) is accessible.
• (B) – Screw a a bolt into the hole (1). The
locking pins (2) must retract behind the tele-
scopic section (3).
If necessary, give the locking pin (2) a slight
knock to help this procedure.
• Unlock the other side of the telescopic
section as well.
Locking the telescopic section
• (A) – Retract until the locking pin (2) is in the
middle of the opening.
• Unscrew the bolt from the hole (1) until the
locking pin is fully extended.
• Remove the bolt from the bore.
• (B) – Retract further until the telescopic
section is set down.
S
Risk of damage due to a mechanically released lock!
Under no circumstances may you operate the telescoping cylinder whilst
the lock is mechanically released. Screw all bolts out of the holes immedi-
ately after finishing the repair work.
This prevents damage to the telescoping cylinder and the locking system.
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