Malfunctions during crane operation
14.4 Finding and eliminating malfunctions
14 - 14 3 112 xxx en Operating Manual GMK6300L
xx.xx.xxxx
14.4.2 Malfunctions in the exhaust system
Coolant temperature too
high
Coolant level too low Top up coolant; à Maintenance
Manual
Outer surface of heat
exchanger dirty
Clean the outside of the heat
exchanger
V-belt of coolant pump at
engine loose
Tension V-belt;
à Separate
engine operating instructions,
provided by the manufacturer
Engine oil pressure too
low – Symbol
L red
Engine oil level too low Check the oil level and top up if
necessary; à Maintenance
Manual
Engine cannot be
switched off using the
ignition key
Malfunction in the electronics Turn off the engine with the
emergency-stop device;
à p. 10 - 22
Engine diagnostics plug
not working
Fuse F4/3, F5/6 blown Replace blown fuses;
à p. 14 - 9
The engine performance
is reduced
The coolant is too hot or
another malfunction.
The engine is not switched off
to ensure the load can be low-
ered and the truck crane can be
unrigged
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
– Lights up
–Flashes
Carbamide level in tank at
reserve level
Urea tank empty
Refill carbamide ;
à p. 4 - 8
– Light up
– Carbamide tank sensor faulty
– Error on the carbamide
dosing unit
– Carbamide lines blocked
– Temperature sensor faulty
– Cable breakage in the car-
bamide system
– Exhaust gas sensor faulty
Have the exhaust system checked
by Manitowoc Crane Care, an
authorised GROVE retailer or an
authorised specialised repair
shop.
Malfunction Cause Remedy
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