Great Plains NTA2000D Operator Manual - Manual (Page 33)

31 9/13/2006 NTA 2000D 148-632M
Great Plains Mfg., Inc.
Opener Down Pressure
Refer to Figure 33
To adjust down pressure on individual openers that run in
tire tracks, change opener-spring length.
1.
To increase down pressure, loosen the jam nut at the
lower end of opener spring, then turn flange nut. Each
additional 1/4” (6 mm) of spring compression adds
about 13 pounds (6 kg) of pressure. After adjusting
flange nut, tighten jam nut.
IMPORTANT: Do not compress spring more than one
inch (25 mm). Compressing spring more than one inch
(25 mm) could cause opener damage and void the war-
ranty.
Disk Scraper Adjustment
Refer to Figure 34
To keep opener disks turning freely, dirt scrapers are
mounted between disks to clean as the disks rotate. As
field conditions vary, you may need to adjust the scrapers.
2. To adjust, loosen 3/8” bolt and raise or lower scraper
as needed.
Leaf Spring Adjustment
Refer to Figure 35
A leaf spring is located just ahead of the vertical pivot. The
spring is designed to provide just enough force to keep the
opener frame square and stable for turning at field ends
and to add stability for drilling in rough field conditions.
Proper leaf-spring adjustment is important for smooth
implement operation.
1. To adjust properly, square the opener frame to the
coulter frame and adjust 3/8” U-bolts (1) on each side
until leaf-spring rollers (2) just make contact with roller
pads (3) on opener frame. When the U-bolts are ad-
justed properly the opener frame should be square
with the coulter frame when the drill is raised.
Figure 33
Individual Spring Adjustment
Figure 34
Disk Scraper
Figure 35
Leaf Spring Adjustment
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