Malfunctions during crane operation
14.4 Finding and eliminating malfunctions
14 - 24 3 112 xxx en Operating Manual GMK6300L
xx.xx.xxxx
14.4.10 Malfunctions in the hydraulic system/hydraulic oil cooler
14.4.11 Malfunctions when inclining the crane cab
14.4.12 Malfunctions when operating with the hand-held control
Malfunction Cause Remedy
Hydraulic oil temperature
above 80 °C (176 °F), fan in
the hydraulic oil cooler run-
ning
Hydraulic system is heavily
loaded
Stop the crane operation and
keep the engine running until
the oil has cooled down
Hydraulic oil temperature
above 80 °C (176 °F), fan in
the hydraulic oil cooler not
running
Fuse F1/7, F1/8 blown. Stop crane operation and
replace blown fuse;
à p. 14 - 6
Faulty temperature sensor in
the circuit of the hydraulic
system, error message is
displayed
Have the temperature sensor
replaced
Symbol
g is red Corresponding hydraulic oil
filter soiled
Change hydraulic oil filter;
à Maintenance Manual
Malfunction Cause Remedy
Crane cab inclination function
not working
Fuse F1/1, F1/7 blown Replace the blown fuse;
à p. 14 - 6
Malfunction Cause Remedy
CAN lamp flashes or stays off
after connecting the hand-
held control
Some other socket is lacking a
bridging plug
Insert bridging plug;
à p. 12 - 21
Fuse F2/6 blown Replace the blown fuse;
à p. 14 - 6
Motor will not start Ignition in the driver's cab
switched on
Switch off the ignition in the
driver's cab;
à p. 4 - 23
Pre-selected function cannot
be performed
Another function has been
pre-selected
Pre-select the desired function
Operation not possible Malfunction in the control
system
Manitowoc Crane Care
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