Great Plains NTA3007 Operator Manual - Manual (Page 114)

110 NTA907 or NTA3007 Table of Contents Index Great Plains Manufacturing, Inc.
166-371M Table of Contents Index 2012-07-02
07 Series Row Unit Adjustments
Refer to Figure 110 (which depicts a row unit fully populated
with all optional accessories supported for use with the
NTA907 and NTA3007, including frame-mounted coulter,
which is mounted independently of the row unit)
From front to back, a Great Plains 07 Series row unit can
include the following capabilities (some optional):
1. Down Pressure Spring: standard
Each row unit is mounted on the NTA907 or NTA3007
via extended 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 “Row Unit Spring
Adjustment” on page 111.
2. 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 “Disc Blade Adjustments” on page 111.
3. Seed delivery tube: standard
No adjustments are necessary.
4. Inside Scraper: optional
Helps prevent clogging between disc blades. See
“Disc Scraper Adjustments” on page 112.
5. Seed firmer: seed flap (not shown) standard:
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 113.
Seed-Lok™ firming wheel (shown)
Improves seed-soil contact. See “Seed-Lok™ Seed
Firmer Lock-Up” on page 113.
6. 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 via the T-handle.
See “Opener Depth (Press Wheel Height)” on
page 114.
Machine Damage Risk:
Do not back up with row units in the ground. To do so will
cause severe damage and row unit plugging.
Figure 110
07 Series Row Unit
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