Manitowoc Grove GMK4100L-1 Operating Manual page 984

Malfunctions during crane operation
14.7 Hydraulic emergency operation as per BGR 159
For slewing
14 - 68
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.
3 302 690 en Operating manual
GMK4100L-1