Great Plains | 151-144U | 2019/03/14
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3P1006NT
Operation
Press wheels (8) - The press wheels close the seed
trench. The T-handle (9) controls press wheel height
and opener depth. See “
A variety of press wheels are available.
Disk Blade Adjustments
Sharp Object Hazard
Coulter and disk blades are sharp. To avoid
serious injury, wear gloves when working in
this area.
As disk blades wear, the diameter of the disks and
the contact gap changes. Opener disk angle and
stagger is not adjustable, but disk-to-disk spacing is
adjustable. Seeding depth will also change or
become irregular unless adjustments are made to
blade spacing and the T-handle setting. Generally,
the blades need to be replaced completely before
coulter height adjustments would be needed.
If blades are replaced, spacers must be
reset.
The ideal spacing causes the blades to be in contact
for about 2.5 cm. If you insert two pieces of paper
between the blades, the gap between them should
be 1.3 mm to 44 mm (A).
If the contact area is significantly larger or smaller (or
there is no contact at all), adjust by moving one or
more spacer washers.
If the contact region varies with blade rotation, one or
both blades is likely bent and needs replacing.
Adjusting Disk Contact
1.
Raise the drill and lock the lift-assist cylinder.
2. Remove the bolt (1) keeping the opener disk on
one side.
3. Carefully remove the disk. Note how many
spacers (2) are outside and inside the disk. Do
not lose the hub components and dust cover (3).
4. To reduce the spacing between the disks, move
one spacer from the inside to the outside of the
disk.
5. Assemble and check the disk contact.
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