Great Plains NTA1300 Operator Manual - Manual (Page 26)

24 NTA 1000 and NTA 1300 148-528M 5/26/2006
Great Plains Mfg., Inc. Adjustments
Opener Down Pressure
Refer to Figure 29
To adjust down pressure on individual openers that run in
tire tracks, change opener-spring length. To increase
down pressure, loosen the jam nut at lower end of opener
spring, then turn flange nut. Each additional 6 mm (1/4-
inch) of spring compression adds about 6 kg (13 pounds)
of pressure. After adjusting flange nut, tighten jam nut.
Disk Scraper Adjustment
Refer to Figure 30
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.
To adjust, loosen 3/8-inch bolt and raise or lower scraper
as needed.
Figure 29
Individual Spring Adjustment
Figure 30
Disk Scraper
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IMPORTANT: Do not compress spring more than 25
mm (one inch). Compressing spring more than 25 mm
(one inch) could cause opener damage.
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