Great Plains 800 Operator Manual - Manual (Page 35)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 31
2011-10-25 Table of Contents Index 175-057M
Disc Blade Adjustments
Opener disc angle and stagger is not adjustable, but
disc-to-disc spacing is, and may need attention as discs
experience normal wear. Spacers must be reset when
blades are replaced.
Refer to Figure 24
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 1.75 in.
(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 Disc Contact
Sharp Object Hazard:
Use caution when making adjustments in this area. Row unit
disc blades may be sharp.
Refer to Figure 25
1.
Raise the openers and lock them with the transport
pin.
2. Remove the bolt retaining the opener disc on one
side. Carefully remove the disc, noting how many
spacers
are outside the disc bearing and inside
the disc. Do not lose the hub components and
spacer washers.
3. To reduce the spacing between the discs (the normal
case), move one spacer washer from the inside to
the outside of the disc.
4. Re-assemble and check disc contact.
Disc Scraper Adjustments
To keep opener discs turning freely, dirt scrapers are
mounted between discs to clean as discs rotate.
Standard 00 Series row units include a double-disc
slotted scraper. A carbide scraper is optional (page 50).
Refer to Figure 26
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.
Sharp Object Hazard:
Use caution when making adjustments in this area. Row unit
disc blades may be sharp.
Figure 24
Checking Disc Contact
26451
Figure 25
Adjusting Disc Spacers
26385
2
1
3
3
3
3 1
3 2
Figure 26
Opener Disc Scraper
16163