Great Plains CTA4000 HD Operator Manual - Manual (Page 50)

46 CTA4000HD Great Plains Manufacturing, Inc.
160-037M 2012-11-28
Row Unit Adjustments
Refer to Figure 60 (which depicts a row unit fully populated
with all optional accessories supported for use with the
CTA4000HD implement)
From front to back, a Great Plains 00HD Series row unit
can include the following capabilities (some optional):
1. Opener height adjustment: standard
If a few rows need to run deeper, such as in tire
tracks, the arm’s pivot point may be lowered. See
“Opener Height” on page 47.
2. Single Down Pressure Spring: standard
Each row unit is mounted on the implement as a
pivoting arm which allows the row unit to
independently move up and down. The adjustable
spring provides the force to get the row unit and
attachments into the soil. See “Row Unit Down
Pressure (Spring)” on page 47.
3. 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 “Disk Blade Adjustments” on
page 48.
4. Seed delivery tube: standard
No adjustments are necessary.
5. Disk Scraper: optional
In sticky soils, a scraper helps keep the opener
disks operating freely. See “Disk Scraper
Adjustments” on page 49.
6. Seed firmer: seed flap (not shown) standard:
Keeton
®
seed firmer (shown)
Improves seed-soil contact, and provides a stable
arm for a low-rate liquid fertilizer delivery tube. See
See “Keeton
®
Seed Firmer Adjustment” on
page 49.
Seed-Lok
®
firming wheel (not shown)
Improves seed-soil contact. See “Seed-Lok
®
Seed
Firmer Lock-Up” on page 50.
7. T-handles set opener depth by adjusting press
wheel height. See “Opener Depth (Press Wheel
Height)” on page 50.
8. 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
“Opener Depth (Press Wheel Height)” on
page 50.
Certain Machine Damage:
Do not back up with row units in the ground. To do so will
cause severe damage and row unit plugging.
Figure 60
00HD Series Row Unit
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