Manitowoc Grove GMK4100L-1 Operating Manual page 946

Malfunctions during crane operation
14.5 Emergency operations and programs
S
14 - 30
Risk of damage due to a mechanically released lock
Under no circumstances may you operate the telescoping cylinder whilst
the lock is mechanically released. Unscrew all bolts out of the bores imme-
diately after finishing the repair work.
This prevents damage to the telescoping cylinder and the locking system.
3 302 690 en
Releasing the lock
•
(A) – Extend about 35 mm (0.11 ft), so that
the cutout (4) is accessible.
•
(B) – Screw a bolt into the bore (1). The lock-
ing pins (2) must retract behind the tele-
scopic section (3).
If necessary, give the locking pin (3) a slight
knock to help this procedure.
•
Unlock the other side of the telescopic sec-
tion as well.
Locking the telescopic section
•
(A) – Retract the telescoping until the locking
pin (2) is in the middle of the opening.
•
Remove the bolt from the bore hole (1) until
the locking pin (2) is extended completely.
•
Remove the bolt from the bore (1).
•
(B) – Retract the telescoping further until the
telescopic section is set down.
Operating manual
GMK4100L-1