CK 3000, CK 4000
20
Picture 24. Adjusting coulter pressure
Picture 25. Adjusting coulter pressure individually.
centrally on the central regulating screw.
The weight of a coulter against the ground can be adjusted to 2-12 kp. The sowing depth depends
on coulter type, seed bed preparation and soil quality. In practice it must always be checked that the
sowing depth is correct and ensured that the seed is placed in moist soil. The easiest way to adjust
the sowing depth is to use the central regulating screw situated vertically in front of the machine
(picture 24). When turning the crank clockwise the pressure increases.
The sowing depth can also be regulated individually. This is done in the front part of the machine
by moving the chain attached to the coulter spring (picture 25). At the tractor’s wheel tracks e.g. the
chains are tightened for 1-2 links. Counting from the middle of the machine the fifth, the sixth and
the seventh coulters on both sides of the centre line are set one chain link shorter already at the
factory. The spring loading of TUME –drills has been designed so that the height of the coulters
doesn’t much affect the pressure of the coulter.
13.
SEED COULTERS
A seed coulter consists of a coulter tube and a point. Seed coulter alternatives:
-
Suffolk coulter
-
Wing coulter
-
1-disc coulter
The tube is the same in all coulter types. It is fairly easy to change the point and thus the machine
can be easily changed to correspond to the circumstances by equipping it with the coulters needed.
The suffolk coulter is suitable for most circumstances. Because these coulters have a large stagger
in driving direction they are not susceptible to clogging. The wing coulter can give a yield increase
of a few percent with most cereals and decreases the degree of laid crop. The wing coulter can be
used in most circumstances but, anyhow, it gets blocked a little easier than other coulter types in
circumstances with much weed. The wing coulter places the seed in an approx. 70 mm broad band.
