Manitowoc Grove GMK 5250L Operating Instructions Manual page 370

Malfunctions in driving mode
7.4 Troubleshooting
Malfunction
Engine does not
start –
Starter turns
The truck crane
cannot exceed
20 km/h (12 mph)
Coolant tempera-
ture too high
Engine cannot be
switched off using
the ignition key
Motor brake
(engine retarder)
cannot be
switched on
Engine/transmis-
sion diagnostics
plug not working
The engine per-
formance is
reduced
7 - 18
Cause
Batteries insufficiently charged
Fuel tank empty
Air intake inhibitor closed
Fuse F4/6 blown
A locking procedure is not yet
completed
Coolant level too low
Oil level in the transmission too
low
Outer surface of heat
exchanger dirty
V-belt of coolant pump at
engine loose
Malfunction in the electronics
Fuse F4/1 blown
Fuse F1/2, F4/7 blown
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
3 302 633 en
Remedy
Charge the batteries;
à
Maintenance Manual
à
1. Refuel; p. 4 - 7
2. Bleed the fuel system;
à
Maintenance Manual
à
Separate engine operating
instructions, provided by the
manufacturer
à
Releasing the air intake
inhibitor , p. 4 - 23
Replace blown fuses;
à
p. 7 - 38
Lock the differential locks or
steering
à
Maintenance
Top up coolant;
Manual
Check the oil level;
à
Maintenance Manual
Clean the heat exchanger
Tighten V-belt;
à
Separate engine operating
instructions, provided by the
manufacturer
Turn off the engine with the-
emergency-stop device;
à
p. 7 - 1
Replace blown fuses;
à
p. 7 - 38
Replace blown fuses;
à
p. 7 - 38
Coolant too hot:
Wait until the coolant has
cooled down – the performance
will increase again
Other malfunctions:
Manitowoc Crane Care
notified
Operating Instructions GMK5250L
must be