Great Plains 3P1006NT Operator Manual - Manual (Page 40)

36 3P1006NT Table of Contents Index Great Plains Manufacturing, Inc.
151-144M Table of Contents Index 2011-12-20
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 26
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
1 ⁄
2
to 1
3 ⁄
4
in. (1.3 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:
Row unit disc blades may be sharp. Use caution when
making adjustments in this area.
Refer to Figure 27
1.
Raise the drill and lock the lift-assist cylinders.
2. Remove the bolt retaining the opener disc on
one side. Carefully remove the disc, noting how
many spacers
are outside the disc and inside the
disc. Do not lose the hub components and dust
cover
.
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.
Figure 26
Checking Disc Contact
26451
Figure 27
Adjusting Disc Spacers
26385
1
3
2
2
2
2
1
2
3