Rigging work
12.6 Outriggers
12 - 50 3 112 xxx en Operating Manual GMK6300L
xx.xx.xxxx
 12.6.11             Levelling the free-on-wheels truck crane
The suspension is deactivated (locked) if the truck crane is in the Free on 
wheels
 working position. 
The suspension must remain switched off until the truck crane is on 
outriggers.
• Set down the load.
• Extend the supporting cylinders until all wheels are just above the 
ground. 
Levelling the truck crane
• Level the truck crane on outriggers until the lamp (1) is the only one lit up 
in the measuring range 1°.
Switching on the suspension 
• In the driver's cab, open the Level adjustment system submenu – Press 
button (1) once.
G
Danger of overturning if the supporting cylinders are operated unevenly! 
Extend or retract the supporting cylinders as evenly as possible! 
This prevents the truck crane overturning when operating individual sup-
porting cylinders.
G
Danger of overturning when switching on the suspension!
You may under no circumstances switch on the suspension as long as the 
rigged truck crane is on wheels. Switching on the suspension would cause 
the suspension struts to be suddenly pressed together and damaged, and 
the truck crane could overturn.