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Great Plains Manufacturing, Inc.
Adjustments
91
04/09/2019
166-283M
07HD Row Unit Adjustments
Refer to Figure 77 (which depicts a row unit fully populated
with all optional accessories supported for use with the
NTA607HD or NTA2007HD)
From front to back, a Great Plains 07HD Series row unit
can include the following capabilities (some optional):
1. Frame-Mount Coulter: optional
Frame-Mounted Coulter Adjustments
2. HD Down Pressure Spring: standard
Each row unit is mounted on the NTA607/2007HD
drill via arms which allow the row unit to inde-
pendently move up and down. The adjustable spring
sets the force at which the opener rides up over
obstructions. See “
3. Disk Blades: standard, 2 per row unit
Double disk blades open a furrow, creating the seed
bed. Spacers adjust the blades for a clean furrow.
4. Seed delivery tube: standard
This tube delivers material from hopper
I
on single-
hopper or double-shoot drills. It delivers material
from both hopper
I
and hopper
II
on single-shoot
drills. No adjustments are necessary.
5. Inside Scraper: optional
Helps prevent clogging between disk blades. See
6. Liquid Fertilizer Tube: optional
This is present only if both a liquid fertilizer system
and Keeton seed firmers are installed. It requires no
adjustment.
7. Seed firmer: seed flap (not shown) standard:
A seed flap requires no adjustment, other than
replacement (page 133) when worn.
Keeton seed firmer (shown)
Improves seed-soil contact, and provides a stable
arm for a low-rate liquid fertilizer delivery tube. See
Seed-Lok™ firming wheel (not shown)
Improves seed-soil contact. See “
8. Fertilizer Tube: optional
This tube delivers material from hopper
II
on double-
shoot drills. The delivery angle is adjustable
9. Press wheels: standard (choice of types)
These close the seed trench.
The press wheels also support the free end of the
row unit, and provide the primary control over seed-
ing depth via the T-handle. See “
Null4:
Machine Damage Risk:
Do not back up with row units in the ground. To do so causes
severe damage and row unit plugging.
Figure 77
07HD Series Row Unit
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