Great Plains 3S-4000HDF Operator Manual - Manual (Page 67)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 63
2013-06-13 Table of Contents Index 195-067M
Disk Blade Adjustments
Opener disk angle and stagger is not adjustable, but
disk-to-disk spacing is, and may need attention as disks
experience normal wear. Spacers will need to be reset
when blades are replaced.
Refer to Figure 69
The ideal spacing causes the blades to be in contact for
about one inch. If you insert two pieces of paper between
the blades, the gap between them should be
0 to 1
3 ⁄
4
inches (0 to 4.4 cm).
If the contact region is significantly larger or smaller (or
there is no contact at all), it needs to be adjusted by
moving one or more spacer washers. If the contact
region varies with blade rotation, one or both blades is
likely bent and in need of replacement.
Adjusting Disk Contact
Sharp Object Hazard:
Row unit disk blades may be sharp. Use caution when making
adjustments in this area.
Refer to Figure 70
1. Raise the drill and lock it up by moving the
Transport/Field handle to TRANS.
2. Remove the bolt retaining the opener disk on one
side. Carefully remove the blade , noting how
many spacers are outside the flange dust cover
and 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 of the flange dust cover.
4. Re-assemble and check disk contact.
Disk Scraper Adjustments
Disk scrapers are optional. See page 101 ordering
information and page 23 for installation. To keep opener
disks turning freely, dirt scrapers are mounted between
disks to clean as disks rotate.
Sharp Object Hazard:
Row unit disk blades may be sharp. Use caution when making
adjustments in this area.
Refer to Figure 71
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 69
Checking Disk Contact
26395
Figure 70
Adjusting Disk Spacers
26385
4
1
3
3
3
2
1
2
3 4
Figure 71
Opener Disk Scraper
26463