Malfunctions during crane operation
14.6 Hydraulic emergency operation with the hand pump
Operating manual 3 302 736 en 14 - 49
GMK4090
xx.xx.xxxx
14.6 Hydraulic emergency operation with the hand pump
H
This section only applies to the standard hydraulic emergency operation. If
the truck crane is equipped with an hydraulic emergency operation system
to BGR 159;
à p. 14 - 56.
14.6.1 Operating principle
In hydraulic emergency operation, you can
operate the derricking gear and perform the
Lower main hoist movement, for example, to
raise the main boom in the case of a defective
engine.
The hand pump (1), which is activated by
switching over a valve, 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 oper-
ating the hand pump.
G
Danger from mutual interference of the power units
Check the positions of the valves 1 to 4 for the hydraulic emergency opera-
tion in accordance with BGR (in case available) and, if necessary, switch to
crane operation;
à p. 14 - 51.
This prevents the power units suddenly starting to move.
To Next Page
Loading...
Need help?
General
