Great Plains CTA4000 Operator Manual - Manual (Page 44)

40 CTA4000
160-269M-A 08/03/2010
Row Unit Adjustments
Refer to Figure 47
(which depicts a row unit fully populated with all optional
accessories supported for use with the CTA4000 implement)
From front to back, a Great Plains 00 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 41.
2. Single Down Pressure Spring: standard
Each row unit is mounted on the implement as a piv-
oting 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 41.
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 42.
4. Seed delivery tube: standard
No adjustments are necessary.
5. Disk Scraper: standard
In sticky soils, a scraper helps keep the opener disks
operating freely. See “Disk Scraper Adjustments”
on page 42.
6. 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
See “Keeton Seed Firmer Adjustment” on
page 43.
Seed-Lok™ firming wheel (shown)
Improves seed-soil contact. See “Seed-Lok™ Seed
Firmer Lock-Up” on page 43.
7. Press wheels: standard (choice of types)
These close the seed trench. The wheels also sup-
port the free end of the row unit, and provide the pri-
mary control over seeding depth. See “Opener
Depth (Press Wheel Height)” on page 44.
Do not back up with row units in the ground. To do so will
cause severe damage and row unit plugging.
Figure 47
00 Series Row Unit
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