Great Plains 3N4010HDA Operator Manual - Manual (Page 55)

Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 51
2013-09-24 Table of Contents Index 196-444M
Uneven seed spacing Seed-Lok plugging Lock up Seed-Lok, page 47.
Damaged or missing seed flap Replace seed flap.
Opener disks not turning. See “Opener disks not turning freely” in this
Troubleshooting chart.
Gearbox setting too low Operate variable rate gearboxes at scale set-
tings of 20 or higher for consistent results.
Fan speed too low Check fan speed, page 29.
Uneven seed depth Excessive field speed Slow down.
Coulter depth adjustment Verify coulter-to-opener relationship.
Coulter down-force insufficient -
coulters not achieving depth Add weight or, if weight is sufficient, increase
coulter spring settings.
Insufficient opener down force for con-
ditions Adjust row unit cam, page 45.
Conditions too wet Wait for dryer weather.
Seed-Lok plugging Lock up Seed-Lok, page 47.
Damaged or missing seed flap Replace seed flap.
Damaged opener seed tube Check for damage at tip of seed tube.
Partially plugged opener seed tube Lift up drill, expose bottom of seed tube and
clean out.
Incorrect choice of coulter Change coulter blade.
Skimming (gauge wheels skipping, or
off ground entirely) Reduce coulter and/or row unit down forces,
or add weights.
Opener disks not turning
freely Opener plugged with dirt Clean opener. Adjust scraper.
Planting conditions too wet Wait until drier weather.
Seed-Lok is plugging opener Lock up Seed-Lok, page 47.
Too much blade-to-blade contact Adjust disk contact. See page 46.
Failed disk bearings Replace disk bearings.
Bent or twisted opener frame Replace opener frame.
Press wheels not com-
pacting the soil as
desired Too wet or cloddy Wait until drier weather or rework ground.
Coulter set too shallow Adjust coulter depth. See page 34 or
page 42.
Incorrect press wheel depth setting Adjust T-handle. See page 48.
Opener spring pressure too low or too
high Reduce opener spring pressure.
Excessive seed cracking Excessive field speed Slow down.
Unclean seed. Use clean seed.
Damaged flute “stars” in air cart meter Open calibration door and inspect flutes.
Damaged, old or dry seed Use clean, new seed.
Problem Cause Solution