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Attention must also be paid to the function of the
scrapers. If these already show signs of wear
and a wear edge has formed, this edge must
not touch the cutting edge, because then the
automatic readjustment would no longer work.
If necessary insert another washer or replace
the scraper.
Keep the rubber buffers free of oil. Oils
and grease can harm the rubber and
thus adversely affect the function.
Scrapers, coulter discs and press wheels
Uniformer
The uniformer firms the seed in the seedbed and
presses it gently down.
Under moist conditions and sticky soils the
uniformer may pick up residues. In this case it
should be removed.
To avoid damaging the uniformers do not re-
verse with the machine lowered.
Press rollers
The press wheels are fastened to the coulter
arm with a serrated segment.
They guide the depth of the seed placement,
cover the seed with fine soil and press it down
on the seed.
A scraper keeps the press wheels free of dirt.
The scraper can be readjusted when required.
If depth guidance by the press wheels cannot
be assured on soft and sandy soils, they can be
replaced by press wheels with widths of
7.5 cm or 10 cm.
Maintenance
¾
Check the coulter arm bearing (rubber);
replace if rubber is worn or in the case of
weakening tensioning force.
¾
Check the condition and light movement of the
press wheels, check the fastening screw on
the Check the condition and light movement
of the press for tight fit.
¾
Readjust the scraper on the press wheels as
required.
¾
Check the coulter discs and bearings for wear,
pre-tension and light movement.
¾
Tighten the coulter disc screws with
130 to 150 Nm.
¾
Check the scrapers and uniformers for condi-
tion, tight fit and adjustment.
