Great Plains 3N-4020 Operator Manual - Manual (Page 95)

Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 91
2013-10-29 Table of Contents Index 196-359M
Uneven seed depth Excessive field speed. Reduce field speed.
Planting conditions too wet. Wait until drier weather.
Seed-Lok building up with dirt. Lock up Seed-Lok, pages 74, 82, 88.
Damaged or missing seed flaps. Replace seed flaps.
Drill not level See page 101.
Row down-force too light for conditions Increase force, pages 71, 78, 85.
Partially plugged opener seed tube. Lift up drill, expose bottom of seed tube
and clean out.
Low tire pressure Check tires
Opener disks not turning
freely Opener plugged with dirt. Clean opener.
Planting conditions too wet. Wait until drier weather.
Seed-Lok is plugging opener. Lock up Seed-Lok, pages 74, 82, 88.
Failed disk bearings. Replace disk bearings.
Bent or twisted opener frame. Replace opener frame.
Partially plugged opener seed tube. Lift up drill, expose bottom of seed tube
and clean out.
Press wheels not
compacting the soil as
desired Too wet or cloddy. Wait until drier weather or rework ground.
Incorrect press wheel depth. Reset press wheel depth, pages 74, 82,
89.
Excessive seed cracking Excessive field speed. Reduce field speed.
Unclean seed. Use clean seed.
Damaged, old or dry seed. Use clean, new seed.
Seed cup door handle not open enough. See page 29.
Drill boxes do not empty
evenly Opener seed tube plugged. Lift up drill, expose bottom of seed tube
and clean out with wire.
Drive chains missing or damaged. Replace drive chains.
Planting around fields vs. back-and-forth. Correct planting operation.
Rough field conditions may move seed in
the box.
Seed cup(s) are shut off. Open seed cup(s).
Some models do not have the same
number of seed cups between each bulk-
head divider. The section with more seed
cups will empty sooner. Verify number of seed cups in each box.
Problem Cause Solution