Crane operation
11.3 Crane operation with main boom
Operating manual GMK 6400 3 112 993 en 11 - 53
12.07.2013
11.3 Crane operation with main boom
11.3.1 Checks during crane operation
Horizontal
alignment
During crane operation, the truck crane may tilt if the ground gives way due
to varying loads.
• Check the horizontal alignment of the truck crane during crane operation
on the display (1);
à p. 12 - 50.
Due to deformation of the frame, the horizontal alignment can change by up
to 2° when the superstructure is turned from the 0° or 180° position.
If the truck crane does not return to the horizontal position after being
turned back to the 0° or 180° position, you must immediately determine the
cause and eliminate it and, if necessary, realign the crane. Observe the posi-
tion of the superstructure when doing so;
à Levelling the truck crane on out-
riggers
, p. 12 - 50.
Safe distances During crane operation, always ensure that the truck crane and the load are
at a sufficiently large distance to objects and persons. Pay particular atten-
tion to objects that pose a direct danger (e.g. gas containers or scaffolding).
Keep a safe distance away from electrical lines;
à Safe distance from electrical
cables
, p. 12 - 14.
s
G
Risk of accident if the truck crane is not level
The RCL calculates the working radius from the length and angle of the
main boom. The actual working radius changes and there is a danger of the
crane overturning if the truck crane is not level.
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