Great Plains 2N-3020 Operator Manual - Manual (Page 34)

32
Section 4 Troubleshooting
2N-2420 and 2N-3020 Two-Section Folding No-Till Drill 196-164M-A 2/28/08
Great Plains Mfg., Inc.
Press wheel not compacting
the soil as desired Reset press-wheel depth. Refer to Opener Adjustments, “Adjustments,” page 21.
Re-adjust press wheel depth to match coulter depth.
Increase down-pressure on disk openers. Refer to Opener Adjustments, “Adjust-
ments,” page 21.
Grain box not emptying evenly Check that speed-change gearbox and seed-rate handles are set the same on
each drill box.
Certain models do not have the same number of seed cups between each divider
of bulkhead. The section with the larger number of cups will empty sooner.
Press wheel or openers plugging Check soil conditions–may be too damp.
Decrease opener down pressure. See Opener Adjustment, “Adjustments,” page
21.
Do not back up with openers in the ground.
Do not stop and allow drill to roll backward with openers in ground.
Check optional Seed-Lok ® wheels. Lock up firming wheels if soil conditions are
too wet. Refer to Seed-Lok, “Adjustments,” page 30.
Install coulter trash tines. Refer to Coulter Tines, “Adjustments,” page 28.
Raising and lowering drill is rough or
uneven. Lubricate wheel-arm pivot casting. Refer to Lubrication, “Maintenance and Lubri-
cation,” page 35.
Check hydraulic fittings for leaks.
Rephase the field-lift cylinders. Refer to Lifting the Drill in the Field, “Operating
Instructions,” page 17.
Check that rephasing cylinders have been properly bleed. Refer to Bleed Field-Lift
Hydraulics, “Drill Preparation and Setup,” page 11.
Seed cup sprockets locked up or twisted
feed drive shaft Check for foreign material lodged in one or more seed-cup sprockets.
Inspect seed-cups for dried liquid insecticide. Remove build-up by disassembling
each seed cup and scraping the foreign substance from the turning surfaces.
Coulters not going deep enough Check weight charts on page 20 and add weight if necessary.
Change depth stop to lower coulters. Refer to Coulter Adjustments, “Adjust-
ments,” page 19.
Coulters and drill going too deep Check weight charts on page 20 and remove weight if necessary.
Set press wheels to a shallower depth. Refer to Opener Adjustments, “Adjust-
ments,” page 21.
Change depth stop to raise coulters. Refer to Coulter Adjustments, “Adjust-
ments,” page 19.
Openers and/or coulters plugging in
adverse conditions Drill at a slight angle to the rows.
Install coulter trash tines. Refer Coulter Tines, “Adjustments” page 28.
Actual seeding rate is different than
desired Check tire pressure. Proper inflation is listed on Tire Inflation Chart, “Appendix,”
page 44.
Check gauge wheel size. Proper size is 11L x 15" 8-ply.
Seed treatment will affect seeding rate if the chemicals build up in seed cup.
Unless cleaned regularly, this build-up can cause breakage of the seed shaft.
Problem Solution