KUHN GMD55 SELECT, Operator'S Manual

Page: 61 / 68

Trouble shooting guide
Disc mower
GMD55 SELECT
59
$ Trouble shooting 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.
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 main frame height with
regards to the ground.
Bad ground contour
adaptation.
Incorrect main frame setting.
Adjust main frame height with
regards to the ground.
Excessive ground speed. Reduce ground speed.
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.
Lengthened cylinder rod. Shorten cylinder rod.
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.