Malfunctions in driving mode
7.6 Troubleshooting
7 - 28 3 112 xxx en Operating Manual GMK6300L
xx.xx.xxxx
Engine does not start –
Starter turns
Batteries insufficiently charged Charge the batteries;
à Maintenance Manual
Fuel tank empty 1. Refuel;
à p. 4 - 7
2. Bleed the fuel system;
à Maintenance Manual
à Separate engine operating
instructions, provided by the
manufacturer
Air intake inhibitor closed à Releasing the air intake inhibi-
tor
, p. 4 - 25
Fuse F4/6 blown Replace blown fuses;
à p. 7 - 20
The truck crane drives at
a maximum of 20 km/h
(12 mph)
A locking procedure is not yet
completed
Lock the differential locks or
steering
Coolant temperature too
high
Coolant level too low Top up coolant;
à Maintenance
Manual
Oil level in the transmission too
low
Check the oil level;
à Maintenance Manual
Outer surface of heat
exchanger dirty
Clean the heat exchanger
V-belt of coolant pump at
engine loose
Tighten V-belt;
à Separate engine operating
instructions, provided by the
manufacturer
The fan wheel on the engine
does not turn
Switch the fan wheel to emer-
gency operation;
à p. 7 - 38
Engine cannot be switched
off using the ignition key
Malfunction in the electronics Switch off the engine with the
emergency stop device;
à p. 7 - 1
Motor brake (engine
retarder) cannot be
switched on
Fuse F4/1 blown Replace blown fuses;
à p. 7 - 20
Engine/transmission diag-
nostics plug not working
Fuse F1/2, F4/7 blown Replace blown fuses;
à p. 7 - 20
The engine performance is
reduced
The coolant is too hot or
another malfunction.
The engine is not switched off
in order to drive on to the next
place where it is possible to
stop.
Coolant too hot:
Wait until the coolant has
cooled down – the performance
will increase again
Other malfunctions:
Manitowoc Crane Care
Report it
Malfunction Cause Remedy
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