Malfunctions in driving mode
8.5 Emergency operation and breakdown assistance
Operating manual 3 302 690 en 8 - 31
GMK4100L-1
23.11.2017
Axle drives
• Switch off all differential locks.
The symbols (1) and (2) must be green,
– Transverse differential locks
à p. 5 - 51.
– Longitudinal differential lock;
à p. 5 - 51.
Parking brake
• Release the parking brake.
The lamp (1) must go out.
If the lamp continues to light up, the supply pressure may be too low. Let
the engine of the truck crane or towing vehicle run on the compressed-air
supply until the supply pressure has been built up;
à Building up supply
pressure
, p. 5 - 10.
If the lamp (1) does not go out, there is a malfunction on the parking brake
system. Contact
Manitowoc Crane Care.
Towing the truck crane out of the danger area
Once you have made all the adjustments as described in this section,
you can tow the truck crane away from the hazard area.
• Ensure that the tractor-vehicle accelerates only slowly.
a
s
G
Risk of accidents due to faulty brakes
If the service brake system has been damaged, you may only tow the
truck crane from the immediate hazard area after consulting with
Manitowoc Crane Care.
S
Risk of damage to the chassis
Starting jerkily or quickly can damage the chassis.
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