Manitowoc Grove GMK6300L - Malfunctions of the Steering

Malfunctions in driving mode
7.6 Troubleshooting
7 - 32 3 112 xxx en Operating Manual GMK6300L
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7.6.6 Malfunctions of the steering
Malfunction Cause Remedy
Steering wheel hard to turn,
grating noises when steering
Oil level in the hydraulic oil
tank too low
Check hydraulic oil level;
à Maintenance Manual.
Symbol
d or e is red Oil level in the hydraulic oil
tank too low
Stop and check whether oil
has run out
à If oil has escaped, p. 5 - 40
à If no oil has escaped, p. 5 - 40
Steering circuit has failed,
e. g. pump faulty
Symbol
d and e are red Both steering circuits have
failed
The truck crane cannot be
driven any further, since it can
no longer be steered!
Separate steering cannot be
activated
Current speed above approx.
5 km/h (3 mph)
Slow down or stop the truck
crane
Separate steering cannot be
switched off
Current speed above approx.
5 km/h (3 mph)
Separate steering not
working
Fuse F7/1, F7/2 or F7/3 blown Replace blown fuses;
à p. 7 - 20
Separate steering not work-
ing and the
ECOS display
shows an error message
ECOS malfunction Read out error messages
(à p. 7 - 35) and notify
Manitowoc Crane Care