Manitowoc Grove GMK6300L - Malfunctions in the Transmission

Malfunctions in driving mode
7.6 Troubleshooting
7 - 30 3 112 xxx en Operating Manual GMK6300L
xx.xx.xxxx
7.6.3 Malfunctions in the transmission
Malfunction Cause Remedy
Transmission only shifts up to
second gear
Transmission oil too hot
à On the transmission, p. 7 - 7
Transmission oil colder than
approx. -7 °C (20 °F)
Wait until transmission oil
temperature rises
Transmission is not upshift-
ing at speeds over approx.
20 km/h (12 mph)
A locking procedure is not yet
completed
Lock the differential locks
Transmission not shifting Retarder switched on
à Switching off the additional
brakes
, p. 5 - 46
The transmission does not
respond to the controls
Fuse F1/6 blown Replace blown fuses;
à p. 7 - 19
Symbol
A is red Transmission cannot shift
down as otherwise the maxi-
mum permissible engine
speed would be exceeded.
Slow down the truck crane
until the symbol goes out
The
transmission display
shows a malfunction
The electronic gear system
has detected a malfunction
à Malfunctions in the
transmission
, p. 7 - 40
Transmission diagnostics
plug not working
Fuse F1/2, F4/7 blown Replace blown fuses;
à p. 7 - 19