Driving
5.4 Off-road driving
5 - 58 3 112 993 en Operating manual GMK 6400
12.07.2013
5.4.1 Longitudinal and transverse differential locks
– The longitudinal differential locks prevent individual axle lines from spin-
ning when driving on a slippery surface
– The transverse differential locks prevent individual wheels from spinning
when driving on a slippery surface
• Stop the truck crane.
• Straighten the steering.
• Open the main menu, if necessary (1).
For switching on and off, the current speed needs to be under about 5 km/h
(3 mph).
Switching on
• Press button (1) once for:
– Central differential locks (A)
– Transverse differential locks (B)
The dot turns green.
• Start moving slowly – Display:
– The symbol (3) first turns yellow
– Then symbol (2) turns red,
differential locks on
If the error symbol is displayed, contact Manitowoc Crane Care.
S
Risk of damage to the differential locks
Leave the transverse differential locks switched on only for as long as nec-
essary. Always switch off the transverse differential locks before driving on
a firm surface