Driving modes
6.4 Main boom, removing/installing
6 - 38 3 112 xxx en Operating Manual GMK6300L
xx.xx.xxxx
 6.4.9             Lifting the main boom off/on the turntable
– The main boom is slung; à p. 6 - 26.
– The hydraulic/electrical connections are disconnected; 
à p. 6 - 36.
– The boom pivot pin is pulled out; 
à p. 6 - 33.
– The derricking cylinder is separated from the main boom; 
à p. 6 - 30.
Lifting from the 
turntable
• Align the auxiliary crane in such a way that the main boom can be raised 
vertically without swinging.
• Lift the main boom forwards and upwards 
from the turntable. Make sure that: 
– The connection lines (2) do not hang 
loose,
– The pivot point (1) is higher than the 
driver's cab.
S
Risk of damage to driver's cab!
Lift the main boom far enough to ensure that the pivot point of the derrick-
ing cylinder does not damage the driver's cab.
G
Danger of hands and arms being crushed!
Whilst rigging the crane, maintain sufficient distance from the main boom 
and do not reach in between the connecting points. This will prevent you 
from being crushed between the turntable and the main boom.