Troubleshooting guide
Disc mower
GMD33N
57
$
Troubleshooting guide
-
Problem
Cause
Remedy
Uneven stubble.
Machine tilted to the front or
rear (excessive pitch angle).
Adjust cutterbar angle: See
section ’’Adjustments in
working position’’.
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.
Too low PTO speed (rotational
frequency).
Increase speed to 540 min
-1
.
Soil build up in front of the
cutterbar.
Very wet working conditions.
Adjust cutterbar ground
pressure.
Too much cutterbar down
pressure.
Bad ground contour
adaptation.
Incorrect main frame setting.
Adjust main frame height with
regards to the ground.
Excessive ground speed.
Reduce groundspeed.
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.
Check the condition and the
presence of the outer disc cone
cap.
Immediately replace missing
cap.
Too frequent safety breakback
release.
Insufficient spring
compression.
Increase spring compression:
See section ’’Safety
breakback".
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