Rigging work
12.3 Rigging work after driving with a trailer
12 - 18 3 112 993 en Operating manual GMK 6400
12.07.2013
12.3.2 Switching off the slewing gear freewheel
If the slewing gear freewheel is switched on, switch it off prior to working
with the crane.
Requirements
– The engine for crane operation is running
– The slewing gear brake is released, the lamp (1) has gone out;
à Releasing the slewing gear brake, p. 11 - 99
Switching off
• Remove the lock (4) from the bore (1)
• Pull the pin (3) out as far as possible
• Secure the pin with the lock in the bore (2)
and remove the key
• Pull and secure the pin (3) on the other slew-
ing gears in the same way
• Close the valve (5) – the slewing gear free-
wheel is switched off
Before slewing Support the truck crane with the necessary outrigger span, enter the corre-
sponding RCL code and derrick the main boom to an angle permissible
within the working range.
G
Risk of accident with the slewing gear freewheel switched on
Switch off the slewing gear freewheel before working with the crane.
If it is not switched off, the slewing gear brake does not work and you can-
not stop slewing movements in time.
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