horsch Pronto 3 - 6 DC, Operating Instructions Manual

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Coulter discs
The coulter discs are arranged at the front at an
angle with slight pretension to each other. This
enables light pulling work and exact opening of
the seed channel.
Adjusting the coulter discs
¾
Adjust the preload of the two coulter discs
with the washers. If necessary, add another
washer.
NOTE
•
With wet or loose soils the pre-tension of the
coulter discs must not be too high to make
sure that the discs will not block up and wear
unevenly.
•
The coulter discs must be slightly preloaded at
the cutting edge. However, turning them eas-
ily without extra force must still be possible.
•
If one disc rotates, the other one should also
reliably turn as well.
•
If the discs stop and block up because of
incorrect preload, too loose soil or wear, the
seed will be placed in bunches.
Wear
This pre-tension will reduce due to wear on
the coulter discs; the discs will no longer have
contact.
¾
In this case replace the coulter discs and
adjust the preload by removing the washer
again. Always remove the shims in pairs at the
left and right under the coulter disc bearing.
Tighten the screws for the coulter disc bear-
ings (hexagon socket screw M 16 x 1.5) with
130 - 150 Nm.
Tighten the screws for the coulter discs
(6 x M 8 each) with 38 Nm.
PowerDisc coulter
Overview
7 6 5 4 2 3 1
PowerDisc coulter
1 Rubber bearing for coulter body (maintenance free)
2 Coulter unit
3 Coupling bar
4 Coulter discs
5 Uniformer
6 Press roller
7 Harrow
The seed is placed with the coulters:
•
The coulter discs (4) cut through the seedbed
and expose the seed horizon.
•
The seed is then placed between the coulter
discs.
•
The uniformer (5) holds the seed in the furrow.
•
The press roller (6) guides the coulter in depth
and ensures closing of the soil.
•
The harrow (7) covers the seed furrow with
soil and calms the flow of soil.
The coulter body is mounted in maintenance-
free rubber bearings (1). It links the coulters
and the press roller and transfers the coulter
pressure.
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