Malfunctions during crane operation
14.6 Hydraulic emergency operation with the hand pump
Operating manual 3 302 819 en 14 - 51
GMK3060
13.12.2018
14.6 Hydraulic emergency operation with the hand pump
H
This section only applies to the standard hydraulic emergency operation. With the
appropriate equipment you can also use the hydraulic emergency operation
according to DGUV;
à p. 14 - 57.
14.6.1 Operating principle
In hydraulic emergency operation, you can oper-
ate the derricking gear and the main hoist, e.g. to
raise the main boom in the case of a defective
engine.
The hand pump (1), which is integrated into the
hydraulic circuit via a hose connection, is used
as the energy source for the crane's hydraulic
system.
The hydraulic circuits are switched via the
valves (2).
The crane movements are performed by
operating the hand pump.
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