Malfunctions during crane operation
14.6 Hydraulic emergency operation with the hand pump
Operating manual 3 302 709 en 14 - 55
GMK5150L
12.01.2018
For lowering You must additionally switch a valve to continuous operation for lowering.
Switching on continuous operation
• Unscrew the cap (2) from valve Y1104 –
Lowering (1).
• Remove the plug (4).
• Screw the cap with pin (3) on to the valve –
continuous operation is now switched on.
Switching off continuous operation
• Unscrew the cap (2) from the valve (1).
• Screw the cap on so that the pin (3) can be
seen.
• Insert the plug (4).
S
Danger due to falling loads
Switch off continuous operation immediately after emergency activation.
Check that the pin can be seen on the cap.
Thus you prevent loads falling down immediately after lifting in subse-
quent crane operation.
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