Malfunctions during crane operation
14.7 Hydraulic emergency operation as per BGR 159
14 - 70 3 302 690 en Operating manual
GMK4100L-1
23.11.2017
Derricking • Determine the maximum permissible working radius for the current
rigging mode according to the
Lifting capacity table.
• Observe the maximum permissible working
radius specified in the
Lifting capacity table –
by measuring, if necessary.
• Move the control lever (1) in the required
direction.
Lifting/lowering
• Move the control lever (1) in the required
direction.
G
Danger of overturning if the working radius is too large when lowering
the boom
In emergency operation, operations are not shut down by the RCL. This
also applies if the RCL displays are still active after switching on the igni-
tion. The truck crane will overturn if you exceed the maximum permissible
working radius for the current rigging mode as specified in the
Lifting capac-
ity table
when lowering the boom.
A: Lowering the boom
B: Raising
A: Lowering
B: Lifting
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