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pressure start to tighten. The lower the lowering of the machine is adjusted, the greater will be
the coulter pressure created by the tension spring pairs. Maximum lower position (that is coulter
pressure) from the Agrocont board computer. Check the adjustment instruction from the
Agrocontin manual.
FIG. 18. Coulter pressure
FIG. 19. Coulter structure
Adjustments
Adjustment must be carried out in the field, in sowing conditions.
Adjust the coulter wheel, e.g. to the middle adjustment notches.
Lower the machine down simultaneously driving forward. Stop the tractor when the machine is
lowered. Do not allow the tractor to jolt backwards, in order to keep the coulters from becoming
blocked.
Check the accurate position of the machine. Machine must be in driving direction and horizontally
aligned. Adjust the drive unit push rod set screw as needed.
NOTE
: Shaft cylinder must be in its minimum length when in working position.
If the machine is aligned with the surface of the field and the machine push rod needs no
adjustments, the sowing depth can be verified.
If the sowing depth is not correct, carry out the new adjustments and a new test. Sowing depths
vary somewhat depending on machine filling level, used tractor and soil type.
NOTE: COULTER WEIGHT ADJUSTMENT ALSO EFFECTSTHE SOWING DEPTH
Do not weigh the machine more than necessary. Adjust the maximum weighing with Agrocont,
so that in the hardest part of the field block an adequate coulter weight is found in order to find
the right sowing depth. When the land type changes to a lighter one, lift the machine slightly as
required, that is to reduce the coulter weight adequately. Coulter weight that is too hard, increases
the pull resistance, makes sowing deeper than desired and creates a stress on machine
structures unnecessarily. At the same time the back wheel set closing the groove will have less
gravitational force.
Summary of Contents for Nova 3000 Star
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