Great Plains YP4025F-1670 Operator Manual - Manual (Page 71)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 67
2014-09-08 Table of Contents Index 401-571M
10HD Series Row Adjustments
Refer to Figure 73
(which depicts a row unit fully populated with all optional
accessories supported for use on at least one 10HDP model -
some models may not support some accessories)
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 75 for adjustments.
2. Unit-Mounted Coulter (UMC): optional
UMCs cut residue and prepare the soil ahead of the
seed furrow. See 76 for adjustments.
3. Dual Down Pressure Springs: standard
Each row unit is mounted on the YP40 planter 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 70 for adjustments.
4. Row Unit Spring Cam: standard
Adjustment sets the down-force used by the row unit.
See “10HDP Series Down-Pressure” on page 70.
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 74.
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 “Row-Unit Opener Disk Adjustments” on
page 77.
7. Seed Meter (standard - choice of models)
A precision or finger pickup meter is standard, with a
choice of wheels or finger sets. See 81 for changing
meters and wheels. See 85 for finger meter
adjustments.
8. Drive Coupler
Disengage unused rows during calibration or when
using alternate row spacings. See 74.
9. Scrapers: (spreader shown)
A lower separator/scraper is standard.
An upper rear carbide scraper is optional.
See 111.
10. Seed delivery tube: standard
No adjustments are necessary. See 74 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 112 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
“Keeton
®
Seed Firmer Adjustment” on page 88.
Seed-Lok
®
firming wheel (shown)
Improves seed-soil contact. See “Seed-Lok
®
Seed
Firmer Lock-Up” on page 88.
12. Press wheels: standard (choice of types)
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 “10HDP
Opener Depth” on page 69.
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 73
10HD Series Row Unit
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