Manitowoc Grove GMK 5250L User Manual

Malfunctions in driving mode
7.4 Troubleshooting
Operating Instructions GMK5250L 3 302 633 en 7 - 23
27.09.2017
7.4.6 Malfunctions of the differential locks
7.4.7 Malfunctions in the hydraulic system/hydraulic oil cooler
Malfunction Cause Remedy
Differential locks cannot be
switched on
Current speed over approx.
5 km/h (3 mph)
Slow down or stop the
truck crane
Drive train under tension Slowly drive truck crane
back and forth,
à p. 5 - 50
Compressed air system
insufficiently filled
à Building up supply pres-
sure
, p. 5 - 10
Fuses F2/1, F4/6, F5/4, F5/7
blown
Replace blown fuses;
à p. 7 - 38
Differential locks cannot be
switched off
Current speed over approx.
5 km/h (3 mph)
Slow down or stop the
truck crane
Drive train under tension Slowly drive truck crane
back and forth,
à p. 5 - 50
Error symbol is displayed CCS malfunction Note the error code
(
à p. 7 - 11) and notify
Manitowoc Crane Care
Malfunction Cause Remedy
Hydraulic oil temperature
above 80 °C, fan in the
hydraulic oil cooler is running
Hydraulic system under
extreme strain and ambient
temperature very high
Stop the truck crane while tak-
ing the traffic situation into
account and run the engine
until the oil has cooled down
Hydraulic oil temperature
above 80 °C, fan in the
hydraulic oil cooler is not
running
Fuse F1/3 blown Stop the truck crane while tak-
ing the traffic situation into
account, and replace the
blown fuse;
à p. 7 - 38.
Defective temperature sensor
in the hydraulic system (error
message is displayed)
Have the temperature sensor
replaced

Manitowoc Grove GMK 5250L Specifications

General

Brand	Manitowoc
Model	Grove GMK 5250L
Category	Construction Equipment
Language	English