25 series row units – Great Plains 3PYP Operator Manual User Manual
Page 64
60
3PYP
Great Plains Manufacturing, Inc.
401-312M
2014-09-09
25 Series Row Units
Refer to Figure 61 (which depicts a row unit fully
populated with all optional accessories supported for use
with the 3PYP planter)
Note: All row-unit components are unit-mounted.
The 3PYP does not support frame-mounted
components other than the row unit itself.
From front to back, a Great Plains 25 Series row unit can
include the following capabilities (some optional):
Certain Machine Damage:
Do not back up with row units in the ground. To do so will
cause severe damage and row unit plugging.
Row Unit Lock-Up: (standard, pin not shown)
In twin-row configurations, the rear row unit may be
locked up to reduce wear in single-row operations,
using a pin stored in a hole in the upper forward
mount, which is transferred to a hole below the rear
end of the lower parallel arms. See “Row Unit
Lock-Up” on page 64
Parallel arms: standard
Each row unit is mounted on the planter with parallel
arms which allow each row unit to independently
move up and down while staying horizontal. See
“Row Unit Down Pressure” on page 61
Figure 61
25 Series Row Unit
18287
25193
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Row cleaners: optional
Row cleaners clear trash from the row. Twin-row
planters support single-arm cleaners. Single-row
planters support single- or double-arm cleaners. See
“Unit-Mount Cleaner Adjustments” on page 65
Coulter: optional, choice of wheels
Coulters cut any remaining trash, and create a
pre-groove for light no-till planting. The down force
needed to cut and widen the coulter groove is
supplied by the row unit. The depth relative to the
opener is set by a choice of hub mounting holes. See
“Coulter Adjustments” on page 66
Openers: standard, 2 per row unit
Openers double disks widen the coulter groove,
creating the seed bed. Setup controls depth, width
and sidewall angle. See “Row-Unit Opener
Adjustments” on page 67
The depth gauge wheels also accept an optional
scraper. See “Adjusting Depth Wheel Scrapers” on
page 70
Seed meter: required, choice of models/features
Meters deliver singulated or volumetric seed. See
“Seed Meter Setup and Adjustment” on page 70
Seed delivery tube: standard (not shown)
No adjustments are necessary.
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Seed firmer (optional):
Keeton
®
seed firmer (shown mounted)
Improves seed-soil contact, and provides a stable
arm for a low-rate liquid fertilizer delivery tube. See
“Keeton
Seed Firmer Adjustment” on page 76
Seed-Lok
®
firming wheel (shown in inset)
Improves seed-soil contact. See “Seed-Lok
Press wheels: standard (choice of types)
These close the seed trench. See “Press Wheel
Adjustment” on page 77
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