Great Plains 3N-4025P Operator Manual - Manual (Page 104)

100 3N-40P Table of Contents Index Great Plains Manufacturing, Inc.
196-538M Table of Contents Index 2014-01-29
10HD Series Row Unit Adjustments
Refer to Figure 134
(which depicts a row unit fully populated with all optional
accessories supported for use with the 3N-4010HDP drill).
From front to back, a Great Plains 10HD Series row unit
can include the following capabilities (some optional):
1. UMC Row Cleaner (Optional)
Row cleaners clear debris ahead of the furrow. See
page 90 for adjustments.
2. Unit-MountedCoulter (UMC) (Optional)
UMCs cut residue and prepare the soil ahead of the
seed furrow. See page 101 for adjustments.
3. Dual Down Pressure Springs (Standard)
Each row unit is mounted on the drill via parallel
arms which allow the row unit to independently move
up and down while remaining parallel to the ground.
The adjustable spring provides the force to get the
row unit and attachments into the soil. See page 103
for adjustments.
4. Row Unit Spring Cam (Standard)
Adjustment sets the down-force used by the row unit.
See “Adjusting 10HD Row Unit Down Force” on
page 103.
5. Row-Unit Lock-Up (Holes Standard, Pins Optional)
If rows are shut off with seed tube plugs, row unit
wear can be reduced by locking them up. See “Row
Unit Shut Off” on page 118.
6. Disc Blades (Standard, 2 per row unit)
Double disc blades open a furrow, creating the seed
bed. Spacers adjust the blades for a clean furrow.
See “10HD Disk Blade Adjustments” on page 105.
7. Seed Meter (Standard - Choice of Models)
A precision or finger pickup meter is standard, with a
choice of wheels or finger sets. See page 79 for
changing meters and wheels. See page 82 for finger
meter adjustments.
8. Drive Coupler
Disengage unused rows during calibration or when
using alternate row spacings. See page 118.
9. Scrapers (Spreader shown)
A lower separator/scraper is standard.
An upper rear carbide scraper is optional.
See page 152.
10. Seed delivery tube (Standard)
No adjustments are necessary. See page 118 for
seed tube shutoff above meter. Standard tubes
include a seed sensor for the optional seed monitor.
11. Seed firmer
Reduces seed bounce and aids emergence by
pressing seed gently into the furrow.
A seed flap (not shown) is standard. See page 151
for replacement.
Keeton
®
seed firmer (not shown)
Improves seed-soil contact, and provides a stable
arm for a low-rate liquid fertilizer delivery tube. See
“10HD Keeton
®
Adjustment” on page 106.
Seed-Lok
®
™ firming wheel (shown)
Improves seed-soil contact. See “10HD
Seed-Lok
®
™ Lock-Up” on page 107.
12. Side Gauge Wheel Depth (Standard)
The T-handle sets planting depth by controlling the
height of the side gauge wheels relative to the
opener discs.
13. Press Wheel Type (Choice)
These close the seed trench. The wheels also
support the free end of the row unit, and provide the
primary control over seeding depth. See “10HD
Press Wheel Adjustments” on page 107.
Machine Damage Hazard:
Do not back up with row units in the ground. To do so will
cause severe damage and row unit plugging.
Figure 134
10HD Series Row Unit
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