Malfunctions during crane operation
14.7 Hydraulic emergency operation as per BGR 159
14 - 68 3 302 690 en Operating manual
GMK4100L-1
23.11.2017
For slewing After switching over the valves behind the crane cab, you must also close a
valve.
(A) – Emergency operation position
• Close the valve 6 – lever (1) at right angles to
the line.
(B) – Crane operation position
• Open the valve 6 – lever (1) parallel to the
pipe.
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