Troubleshooting Guide - KUHN GMD16 Operator's Manual


Problem
Uneven stubble.
Soil build up in front of the
cutterbar.
Bad ground contour
adaptation.
KN225BGB_A

11. Troubleshooting guide


Cause
Dull or broken knives.
Knives not installed
correctly.
Insufficient disk speed.
Too low PTO speed
(rotational frequency).
Cutter bar pitch angle too
high.
Too much cutterbar down
pressure.
Very wet working
conditions.
Incorrect main frame
setting.
Excessive ground speed.
Hydraulic cylinder
blocked.
Incorrect compensating
spring adjustment.
Cutter bar pivot bushes
are worn or seized.
Disc mower
GMD16-GMD20

Remedy
Replace knives.
Make sure the arrow on
the knife upper face is
pointing in the disc's
direction of rotation.
Check belt tension.
Increase the speed to
540/min.
Reduce angle.
Adjust compensating
spring tension.
Adjust main frame height
with regards to the ground.
Fit raised skid shoes.
Adjust main frame height
with regards to the ground.
Reduce groundspeed.
Set hydraulic valve in
floating position.
Adjust compensating
spring tension.
Check condition of pivot
bushes. Replace if
necessary.
11. - Troubleshooting guide
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