CK 3000, CK 4000
18
10.
EXAMPLES OF THE USE OF THE SOWING CHART
Here are two examples of the use of the sowing chart. Note that the seed quantity figures on the
chart must be taken only as estimates. The actual seed quantity depends on the seed qualities which
vary yearly and by species considerably.
The seed quantity must be checked by means of a calibration test. Check the gear ratio of
transmission before you start the sowing by removing the chain cover (at the right end of the
machine). Check the position of the spring cotter on the shaft (pictures 14 and 15). Never lock the
chain wheels simultaneously, because the transmission can be damaged.
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By changing the position of the spring cotter you can choose the setting for normal seeds or
the setting for small seeds.
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In setting for normal seeds the spring cotter is placed on the intermediate shaft. It locks the
22-toothed chain wheel while the 41-toothed chain wheel is rotating freely.
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In setting for small seeds the spring cotter is placed on the feeding shaft. It locks the 41-
toothed chain wheel while the 22-toothed chain wheel is rotating freely.
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Check before you start sowing that the spring cotter is in its place.
10.1 Example of settings when sowing cereals
Target: You want to sow oat 200 kg/ha
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Check in the upper right corner of the chart in item ‘cereal’ for correct position of the bottom
valves. The correct setting is position 2.
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Choose delineator ‘oats’
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Check the gear ratio which is to be I. Start reading from the left corner of the chart from
point 200 kg/ha
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Follow the horizontal line (arrows) to the point where this line and the delineator ‘oats’
intersect
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Go vertically from the intersecting point to the lower scale where you can see that the main
scale setting is 5 (turns)
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From the scale next to the lowest (hand wheel scale) you get number 6
10.2 Example of setting when sowing small seeds
Target: You want to sow rape 14 kg/ha
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Check that in the upper right corner of the sowing chart the correct bottom valve position is
given to be ‘1’
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Study the small sowing chart
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Start from the left corner of the little sowing chart from point 14 kg/ha
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Move horizontally along the 14 kg/ha line to the right until you reach the intersection point of
that line and the delineator ‘rape’.
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From the intersection point go vertically to the lower scale which shows that the correct
setting of the main scale according to the chart is 1 and that of the hand wheel scale 6
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Check that at the upper left corner of the small sowing chart there is ratio II. In transmission
you thus must use the setting for small seeds, which you get by moving the spring cotter
from the 22 toothed chain wheel to the 41-toothed chain wheel (see sowing chart).
