10hd series row unit adjustments – Great Plains 3N4010HDA Operator Manual User Manual
Page 45
Great Plains Manufacturing, Inc.
Adjustments
41
2013-09-24
196-444M
10HD Series Row Unit Adjustments
Refer to Figure 37
(which depicts a row unit fully populated with all optional
accessories supported for use with the 3N-4010HDA)
From front to back, a Great Plains 10HD Series row unit
can include the following capabilities (some optional):
1.
Unit-Mounted Coulter (UMC): optional
UMCs are used instead of frame-mounted coulters
and are often preferred where soils are not rocky.
2.
Dual Down Pressure Springs: standard
Each row unit is mounted on the drill via 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.
3.
Row Unit Spring Cam: standard
This adjustment sets the down-force used by the row
unit. See “Row Unit Down Pressure” on page 44.
4.
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 46.
5.
Seed delivery tube: standard
No adjustments are necessary.
6.
Scraper Separator: standard
No adjustments are necessary.
7.
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 47.
Seed-Lok™ firming wheel (shown)
Improves seed-soil contact. See “Seed-Lok™ Seed
Firmer Lock-Up” on page 47.
8.
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 48.
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 37
10HD Series Row Unit
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