GMD24-GMD28 / HD
78
11. - Troubleshooting guide
KN226BGB_A
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.
Soil build up in front of the
cutterbar.
Very wet working
conditions.
Adjust main frame height
with regards to the ground.
Fit raised skid shoes.
Too much cutterbar down
pressure.
Fit compensating spring.
Bad ground contour
adaptation.
Incorrect main frame
setting.
Adjust main frame height
with regards to the ground.
Excessive ground speed.
Reduce groundspeed.
Cutter bar pivot bushes
are worn or seized.
Check condition of pivot
bushes. Replace if
necessary.
Hydraulic cylinder
blocked.
Set hydraulic valve in
floating position.
Insufficient cutterbar
ground clearance in
"headland turn" position.
Incorrect tractor lift linkage
setting.
See machine attachment.
Too long levelling rod
adjustment on tractor 3-
point lift.
Shorten levelling rods on
tractor 3-point lift.
Considerable vibrations.
Nylon plug missing.
Immediately replace
missing cap.
Too frequent safety
breakback release.
Insufficient spring washer
compression.
Increase spring washer
compression.
Poor division between cut
and uncut crop.
Tangled and down crops.
Check swath shield
retaining spring tension.
