Malfunctions in driving mode
8.4 Troubleshooting
8 - 24 3 302 819 en Operating manual
GMK3060
13.12.2018
8.4.6 Service brake malfunctions
H
For more information; Ã Warning messages on the CCS display, p. 8 - 10.
8.4.7 Malfunctions on the suspension
Malfunction Cause Solution
Lights up while
driving or does not
go out after the
engine is started
The air pressure in one of the two
circuits has fallen below 5.5 bar
(80 psi)
The vehicle can be driven slowly
to the next repair shop
The air pressure in both circuits
has fallen below 5.5 bar (80 psi)
Top up the compressed air
supply at the filler connection;
à p. 8 - 29
If necessary, have the truck crane
towed;
à p. 8 - 29
Parking brake una-
ble to be released
Supply pressure too low
à building supply pressure,
p. 5 - 9
The retarder can-
not be engaged
Fuse F7/4 blown Replace blown fuses;
à p. 8 - 44
Malfunction Cause Solution
Suspension cannot
be activated
Current speed above about
5 km/h (3 mph)
Slow down or stop the truck crane
Compressed air system
insufficiently filled
à building supply pressure,
p. 5 - 9
The suspension
does not respond
to the controls
Control unit fuse blown Replace blown fuses;
à p. 8 - 43
Suspension not
working
Suspension is switched off
à Switching on the suspension,
p. 5 - 17
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