Freeing Truck Crane Stuck In Terrain - Manitowoc Grove GMK4100L-1 Operating Manual

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Rocking the truck

Operating manual

Freeing truck crane stuck in terrain

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.

Press the accelerator as far as possible.

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

It does not make sense to switch between gear positions D and R, as switch-

ing 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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5.4 Off-road driving

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