Crane operation
11.5 Crane operation with main boom
Operating manual 3 302 819 en 11 - 97
GMK3060
13.12.2018
Overview This illustration shows the completely retracted main boom with the basic section
(9) and the first three telescopic sections
I to III (1) to (3).
Each telescopic section is equipped with two locking pins (7) which are extended
by spring force.
The locking pins (7) are pushed into the cutouts (4) of the telescopic section
above at the locking points – the telescopic section is locked.
The telescoping cylinder is attached to the basic section (9) via the piston rod (8).
The telescoping cylinder has two locking pins (5) at the bottom and a mechanism
at the top (10).
When the telescoping cylinder is positioned at a locking point:
– Then the locking pins (5) can be extended into the cutouts (6) – the telescoping
cylinder is locked.
– Then the mechanism (10) engages into the locking pins (7) and can retract
them – the telescopic section is unlocked.
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