Driving mode
5.4 Off-road driving
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GMK3060
13.12.2018
5.4.3 Freeing a stuck truck crane
Rocking the truck
crane free
If the truck crane is stuck in terrain, you can try to free it by driving back and forth
(rocking it free):
If you are trying to rock the crane free, you should switch on the transverse
differential locks and the longitudinal differential lock.
• Switch to transmission mode D or R.
• Select a smaller starting gear with the gearshift lever.
• Start driving as far as you can as high as possible.
• Release the accelerator. The transmission declutches disengage.
• Let the truck crane roll in the opposite direction as far as it will go.
• Start driving, again to the highest point.
• Repeat driving and letting the truck crane roll back until it has rocked itself free.
H
It does not make sense to switch between gear positions D and R, as switching
to R is only performed when the truck crane is stationary and takes a few
seconds. You would not be able to take advantage of the momentum
generated by the change of direction.
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