KUHN GMD310 - Troubleshooting Guide; Common Mowing and Operational Issues

GMD240 - 280 - 310
104
11. - Troubleshooting guide
KN204BGB_G
Disc mower
11. Troubleshooting guide
-
 Problem  Cause  Remedy
Uneven stubble. Dull or broken knives. - Replace knives.
Knives not installed
correctly.
- Make sure the arrow on
the knife upper face is
pointing in the disc's
direction of rotation.
Insufficient disk speed. - Check belt tension.
Too low PTO speed
(rotational frequency).
- Increase the speed to
540 min-1.
Cutter bar pitch angle too
high.
- Reduce angle.
Soil build up in front of the
cutterbar.
Too much cutterbar down
pressure.
- Adjust compensating
spring tension.
Very wet working
conditions.
- Adjust main frame height
with regards to the
ground.
- Fit raised skid shoes.
Bad ground contour
adaptation.
Incorrect main frame
setting.
- Adjust main frame height
with regards to the
ground.
Excessive ground speed. - Reduce groundspeed.
Hydraulic cylinder
blocked.
- Set hydraulic valve in
floating position.
Incorrect compensating
spring adjustment.
- Adjust compensating
spring tension.
Cutter bar pivot bushes
are worn or seized.
- Check condition of pivot
bushes.Grease (If
necessary). Replace if
necessary.