Great Plains 3PNG15 Operator Manual - Manual (Page 37)

Great Plains Manufacturing, Inc. Maintenance and Lubrication 33
10/06/2008 202-553M
Native Grass Box Clean-Out
If a suitable vacuum is available, open the Native Grass
box lid, and vacuum out remaining seed.
If too much seed remains for the vacuum, or no vacuum
is available:
1. Raise and lock up the drill. Place a tarp under the
Native Grass seed tubes.
2. Set the Native Grass (right gearbox) Drive Type to 4.
Optionally install the smallest final Driven sprocket.
3. Install the calibration crank, and turn the drive sys-
tem until no seed flows from Native Grass tubes.
4. Vacuum out any residual material from above.
IMPORTANT !
Water wash-out is not recommended for the Native
Grass box, particularly if seed lubricants have been
used. Water may cause build-up of solidified residue.
Filler material used in native grass mixes can also
present problems.
Small Seeds Box Clean-Out
1. Open lid of each box and scoop out as much seed as
possible.
2. To recover remaining seed, place a collection tarp
under the small seeds tubes at the openers.
3. Raise drill.
4. Set seed rate handle to 100.
5. At left gearbox, rotate calibration crank or ground
drive wheel until no seed flows.
6. If a vacuum cleaner is available, remove any residual
seed from top of meters.
Disc Maintenance
Opener disc blades wear in normal service, becoming
smaller in diameter. Periodically check blade diameter,
and replace when below the recommended limits. Discs
can also be dented by unusual field hazards, or bent.
Replace damaged blades immediately.
Opener Disc Replacement
Replace 15in (38.1cm) opener discs when re-positioning
spacers no longer brings both blades into the contact as
recommended at “Disc Blade Adjustments” on page
26.
Consult updated Parts Manual for latest disc, or disc
assembly part number.