Great Plains NTA2007 Operator Manual - Manual (Page 100)

96 NTA607 or NTA2007 Table of Contents Index Great Plains Manufacturing, Inc.
166-372M Table of Contents Index 2012-01-05
Adjusting Disc Contact
Sharp Object Hazard:
Use caution when making adjustments in this area.
Row unit disc blades may be sharp.
Refer to Figure 76
1.
Unfold implement. Configure implement for
maintenance lift lock (page 110).
2. Remove the bolt retaining the opener disc on one
side. Carefully remove the blade , noting how
many spacers are outside the disc and how many
are inside the disc. Do not lose the hub components
and spacers.
3. To reduce the spacing between the discs (the normal
case), move one spacer washer from the inside to
the outside.
Note: When installing new blades, it is generally
necessary to move outside spacers back inside
after both discs are mounted.
4. Re-assemble and check disc contact.
Disc Scraper Adjustments
Slotted disc scrapers are standard. Spring-loaded
carbide disc scrapers are optional. See page 148
ordering information and page 169 for installation. To
keep opener discs turning freely, dirt scrapers are
mounted between discs to clean as discs rotate.
Sharp Object Hazard:
Use caution when making adjustments in this area.
Row unit disc blades may be sharp.
Refer to Figure 77
As field conditions vary, scrapers may need to be
adjusted. In damp conditions, lower scrapers. If openers
are not turning freely, raise scrapers. To adjust, loosen
bolt and move scraper as needed.
Figure 76
Adjusting Disc Spacers
32136
1
3
2
3
2
1
2
3
Figure 77
Opener Disc Scraper
26463