3P1006NT
Operation
Great Plains | 151-144U | 2019/03/14
21
6. Set the lift-assist circuit to float, to relieve all
pressure.
7.
Remove the pins from the lower 3-point links on
the drill (not on the hitch extension).
8. Disconnect the lighting harness and any other
electrical connections.
9. Disconnect the lift-assist hydraulic line.
10. Remove any dirt and debris that can hold
moisture and cause corrosion.
11. Disconnect seed and fertilizer hoses at the
openers. Allow to hang freely.
12. Cap or plug seed tubes to prevent pest entry.
13. Lubricate and adjust all roller chains.
14. Oil feed cup drive sprocket in the square bore.
15. Lubricate areas noted under “
16. Inspect drill for worn or damaged parts. Make
repairs and service during the off season.
17. Use spray paint to cover scratches, chips, and
worn areas on the drill to protect the metal.
18. Cover with a tarp if stored outside.
Coulter Adjustments
A no-till coulter (1), is mounted directly ahead of each
opener on the drill. The coulters cut through heavy
trash and make a groove in the soil for the openers.
The coulters are mounted on the drill frame so
coulter cutting depth changes as the drill is raised
and lowered.
The coulters prepare soil ahead of the openers, and
are typically set slightly deeper than the openers.
The openers only need to open the tilled shaft into a
V-shaped furrow. The openers cannot generally run
deeper than the coulters. Running the openers too
close to coulter depth may result in uneven seed
depth.
To set the drill seeding depth:
1.
Set the coulter depth by raising or lowering the
front drive wheel.
2. Check the front-to-back drill level and adjust the
lift-assist stroke control spacers as needed.
3. Set the opener depth with T-handles (2) on the
press wheels.
4. If soil conditions make it necessary, increase
coulter down pressure by adding weights.
Coulters normally operate fully down against their
stops. The coulter springs compress when the
blades encounter obstructions.
If necessary, adjust individual coulters or openers to
run deeper for tire tracks, refer to “
The amount of coulter down force needed to cut a
soil groove varies with soil conditions. Adding weight
or shortening the coulter spring increases coulter
down pressure and cutting force.
Coulter Depth - All Rows
Crushing Hazard
To avoid serious injury, do not raise drill
higher than necessary to adjust wheels.
To achieve proper coulter depth, raise or lower drive
wheels by relocating the axles.
Raising wheels sets coulters deeper.
Lowering wheels sets coulters shallower.
Set coulter depth approximately 25 mm deeper than
the desired seed depth.
Set both left and right ground drive axles the same.
Do not lower coulters to penetrate hard soil. Instead,
increase coulter down pressure by adding weight to
the drill. See “
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