Great Plains 3PNG15 Material Rate - Manual (Page 12)

202-579B 12/01/2010
10 3PNG12 & 3PNG15 Great Plains Manufacturing, Inc.
Smalls Seeds Box Planting
Small Seeds Box Rate
Initial seeding rate from the Small Seeds box is con-
trolled by:
• Small Seeds Rate Handle
Note: Drive Type does not affect Small Seeds rate as long
as it is in one of the three configurations shown at
right. Do not use Drive Type 1A for Small Seeds.
Note: The Small Seed box rate is entirely unaffected by
the main Seed Rate Handle, and the Native Grass
sprocket settings on the end of the box.
Small Seeds Drive Type
Small Seeds Drive Type is a combination of ground drive
sprocket settings and Small Seeds sprocket setting that
compensate the shaft rate to a constant value.
All necessary sprockets are already on the shafts, and
need only be inverted and/or shifted into place.
Before setting the drive type, rotate the gauge wheels.
Check that seed cups, seed tubes and drives are work-
ing properly and free from foreign material.
Select the drive type from the seed rate charts. The drive
type varies by seed type and intended population.
Refer to Figure 8
1.
Find your drive type in the seed rate charts of this
manual.
2. Find the drive type sprocket set required in Figure 1
or the table at right.
Note: Whether sprockets are changed or not, verify
chain slack, and check that clip openings on
removable links are facing away from the direction
of chain travel.
3. If the double sprocket is already configured as
needed, skip to step 12.
Lower double 20T+35T sprocket.
Invert on shaft to change.
Upper single jackshaft sprockets (19T or 39T).
Slide aside to change.
1
2
Figure 8
Drive Type Sprockets
16399
1
2
Type Speed
Type 1 20T Driven
35T Driving
39T
1x for Small
Seeds
Type 2 35T Driven
20T Driving
19T
1x for Small
Seeds
Type 2A 35T Driven
20T Driving
19T
1x for Small
Seeds
1 2