Malfunctions during crane operation
14.4 Troubleshooting
14 - 22 3 302 736 en Operating manual
GMK4090
xx.xx.xxxx
14.4.12 Malfunctions of the outriggers
14.4.13 Malfunctions when raising the axles
Malfunction Cause Solution
Outrigger cylinders and
beams can neither be
extended nor retracted
and the inclination indica-
tor does not work
Control unit fuse blown Replace blown fuses;
à Fuses in the driver's cab,
p. 8 - 50
When operating from the
crane cab
– Hand-held control con-
nected to the superstructure
or a bridging plug not
inserted
– Parking brake not applied
– Slewing gear switched on
Disconnect hand-held
control or insert bridging
plug;
à p. 12 - 25
Lock the parking brake;
à p. 5 - 46
Switching the slewing
gear off;
à p. 11 - 118
When operating from the
control units
Display fields switched off Switch on display fields;
à p. 12 - 45
Hand-held control connected
to the superstructure or a
bridging plug not inserted
Disconnect hand-held
control or insert bridging
plug;
à p. 12 - 25
None of the specified
causes apply
Solenoid valves are not
switching electrically
Inform
Manitowoc Crane
Care
Malfunction Cause Solution
The menu cannot be opened Suspension is switched on Switching off the
à p. 5 - 16suspension
Operating elements not
working
Outrigger menu open Open the Raise axle menu;
à p. 12 - 66
Operating elements not
working
Maximum permissible pres-
sure exceeded
Re-align the truck crane to
relieve the load;
à p. 12 - 60
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