Great Plains 3S-4000HDF Operator Manual - Manual (Page 65)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 61
2013-06-13 Table of Contents Index 195-067M
00HD Row Unit Adjustments
The 3S-4000HD/HDF has double-disk openers with
depth-controlling press wheels mounted on floating
opener frames. Opener bodies are staggered for easy
soil flow. All openers pivot on a common axis to maintain
consistent depth as the opener frames follow contours. A
spring provides the down pressure necessary for opener
double disks to open a seed furrow. The spring allows
openers to float down into depressions and up over
obstructions. Individual openers can be adjusted to
account for tire tracks.
Refer to Figure 65 (which depicts a row unit fully populated
with all optional accessories supported for use with the
3S-4000HD/HDF drill)
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 62.
2. Single Down Pressure Spring: standard
Each row unit is mounted on the drill 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 62.
3. Disc Blades: standard, 2 per row unit
Double disk blades open a furrow, creating the seed
bed. Spacers adjust the blades for a clean furrow.
See “Disk Blade Adjustments” on page 63.
4. Main seed delivery tube: standard
No adjustments are necessary.
5. Fertilizer delivery tube: optional
The tube may be reversed to drop fertilizer with the
main seed, or just ahead of the press wheels.
6. Small Seeds delivery tube: optional
The tube may be reversed to drop small seed near
the main seed tube, or just ahead of the press
wheels.
If fertilizer is also installed, the Small Seeds tube is
mounted outside the opener frame.
7. Disk Scraper: optional
In sticky soils, a scraper helps keep the opener disks
operating freely. See “Disk Scraper Adjustments”
on page 63.
8. 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 “Keeton® Seed Firmer Adjustment” on
page 64.
Seed-Lok
®
firming wheel (not shown)
Improves seed-soil contact. See “Seed-Lok® Seed
Firmer Lock-Up” on page 64.
9. 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 65.
Equipment Damage Risk:
Do not back up with row units in the ground. To do so will
cause severe damage and row unit plugging.
Figure 65
00HD Series Row Unit
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