Great Plains YP1630F-1670 Material Rate - Manual (Page 8)

6 Great Plains Manufacturing, Inc. Contents Appendix YP1630F
401-832B Contents Appendix 2012-12-04
Transmission Setup
Refer to Figure 6
Range provides fine seed rate control, and uses only
pairings from Sprocket sizes:
17T, 19T, 23T, 24T, 25T, 26T, 27T, 28T
Pairings are always unequal except for 23T:23T
To change Range drive:
1. Consult the seed rate chart for your crop, meter, and
finger or cell count.
2. For your desired seed population, find the Range
sprocket pairing at the top of the chart.
3. Loosen the tensioning idler to obtain chain slack.
4. Remove the lynch pins at each Range sprocket
that needs to be changed.
5. Exchange sprockets with those required from the
storage trees. Re-install pins.
6. Engage the idler for 13 mm (
1 ⁄
2
inch) of chain slack
at longest chain span.
7. Repeat for other wing.
Checking Planting Rate
Singulated seed charts are based on cleaned and sized
seed singulated with the recommended meter and wheel
or finger count. Extreme seed size variations, foreign
material and solid conditions can affect the planting rate.
Any material difference between chart and field rates
implies a mechanical malfunction, a planter setup error,
unsuitable planting conditions (such as excessive wheel
slippage) or extremely worn planter components.
You can verify your setup and planter performance by
measuring seed placement and spacing over a relatively
short distance.
The columns to the right provide example data for a rate
check, in metric units and similar example in U.S.
customary units.
Figure 6
Transmission Drive
34498
2
DRIVING
DRIVEN
3
2
3
Figure 7
Furrow Check
29247
Metric Example:
Planter: YP1630F-1670
Crop: Corn
Meter: 12 finger pickup
Target Population:
81 200 seeds/hectare
USc Example:
Planter: YP1630F-1630
Crop: Corn
Meter: 12 finger pickup
Target Population:
30,200 seeds/acre
Range Sprockets:
DRIVING: 30
DRIVEN: 20
Transmission Sprockets:
DRIVING: 23
DRIVEN: 26 Range Sprockets:
DRIVING: 30
DRIVEN: 20
Transmission Sprockets:
DRIVING: 23
DRIVEN: 26
Planting Speed:
8 kph
Maximum Planting Speed:
5 mph
Chart Seed Spacing:
17.6 cm
Chart Seed Spacing:
6.9 inches