Malfunctions during crane operation
14.4 Troubleshooting
14 - 22 3 302 690 en Operating manual
GMK4100L-1
23.11.2017
14.4.14 Malfunctions of the outriggers
14.4.15 Malfunctions on the turntable lock
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 - 120
When operating from the
control units
Display fields switched off Switch on display fields;
à p. 12 - 43
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
Turntable locking or unlock-
ing function not working
Control unit fuse blown Replace the blown fuse;
à p. 14 - 73
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