Great Plains NTA2007HD Operator Manual - Manual (Page 95)

Great Plains Manufacturing, Inc. Contents Index Adjustments 91
04/04/2011 Contents Index 166-283M
Adjusting Disk Contact
Sharp Object Hazard:
Use caution when making adjustments in this area.
Row unit disk blades may be sharp.
Refer to Figure 77
1.
Unfold implement. Configure implement for mainte-
nance lift lock (page 105).
2. Remove the bolt retaining the opener disk on one
side. Carefully remove the blade , noting how
many spacers are outside the disk and how many
are inside the disk. Do not lose the hub components
and spacers.
3. To reduce the spacing between the disks (the normal
case), move one spacer washer from the inside to
the outside.
Note: When installing new blades, it is generally neces-
sary to move outside spacers back inside after both
disks are mounted.
4. Re-assemble and check disk contact.
Disk Scraper Adjustments
Disk scrapers are optional. See page 143 ordering infor-
mation and page 164 for installation. To keep opener
disks turning freely, dirt scrapers are mounted between
disks to clean as disks rotate.
Sharp Object Hazard:
Use caution when making adjustments in this area.
Row unit disk blades may be sharp.
Refer to Figure 78
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.
Null4:
Figure 77
Adjusting Disk Spacers
29350
1
3
2
3
2
1
2
3
Null4:
Figure 78
Opener Disk Scraper
26463