Differential Lock Malfunctions; Malfunctions In The Hydraulic System/Hydraulic Oil Cooler - Manitowoc Grove GMK6300L Operating Manual

7.6.7
Malfunction
Differential locks cannot be
switched on
Differential locks cannot be
switched off
Error symbol is displayed
7.6.8
Malfunction
Hydraulic oil temperature
above 80 °C , fan in the
hydraulic oil cooler is running
Hydraulic oil temperature
above 80 °C, fan in the
hydraulic oil cooler is not
running
Operating Manual GMK6300L

Differential lock malfunctions

Current speed above approx.
5 km/h (3 mph)
Drive train under tension
Compressed air system
insufficiently filled
Fuses F2/1, F4/6, F5/4, F5/7
blown
Current speed above approx.
5 km/h (3 mph)
Drive train under tension
ECOS malfunction

Malfunctions in the hydraulic system/hydraulic oil cooler

Hydraulic system under
extreme strain and ambient
temperature very high
Fuse F1/3 blown
Defective temperature sensor
in the hydraulic system (error
message is displayed)
Cause
Cause
3 112 xxx en
Malfunctions in driving mode
7.6 Troubleshooting
Remedy
Slow down or stop the truck
crane
Slowly drive the truck crane
à
back and forth, p. 5 - 62
à
Building up supply pressure ,
p. 5 - 10
Replace blown fuses;
à
p. 7 - 20
Slow down or stop the truck
crane
Slowly drive the truck crane
à
back and forth, p. 5 - 62
Read out error messages
à
( p. 7 - 35) and notify
Manitowoc Crane Care
Remedy
Stop the truck crane while tak-
ing the traffic situation into
account and run the engine
until the oil has cooled down
Stop the truck crane while tak-
ing the traffic situation into
account, and replace the
à
defective fuse; p. 7 - 20.
Have the temperature sensor
replaced
7 - 33