Rigging work
12.3 Rigging work after driving with a trailer
Operating manual GMK 6400 3 112 993 en 12 - 17
12.07.2013
12.3 Rigging work after driving with a trailer
If the main boom was resting on a trailer (dolly) while driving the truck
crane, you must perform the following before working with the crane:
– Switch off the slewing gear freewheel;
à p. 12 - 18
– Switch off the boom floating position;
à p. 12 - 17
– Switch off boom pre-tensioning, if necessary;
à p. 12 - 19
12.3.1 Switching off the boom floating position
You must switch off the boom floating position before you raise the main
boom off the trailer.
• Remove the padlock (2)
• Switch over valve I – lever (1) horizontal and
pointing outward.
• Secure the lever (1) with the padlock (2)
• Switch the valve IV over – lever (3) points
forwards
The boom floating position is now switched
off.
G
Risk of accident from the main boom falling down
Always secure the lever with the padlock after switching off the boom float-
ing position.
This prevents the raised main boom from falling down when actuating the
lever.
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