Great Plains 3N-3020P Operator Manual User Manual
Page 52
3N-3010P and 3N-3020P
196-248M
4/23/2010
50
Uneven seed depth, continued
10 Series Opener press wheel depth
too deep for soil conditions or coulter
depth.
Check 10 Series Opener adjust-
ments, page 33.
20 Series Opener side depth wheels
are set too deep for soil conditions or
coulter depth.
Check 20 Series Opener adjust-
ments, page 35.
20 Series Opener press wheel spring
force is set too high.
Check 20 Series Opener adjust-
ments, page 35.
Incorrect spring pressure on openers.
Correct spring pressure, page 33 or
page 35.
Seed-Lok building up with dirt.
Engage Seed-Lok in dry conditions,
page 44.
Damaged or missing seed flaps.
Replace seed flaps.
Damaged opener seed tube.
Check disk spreader, page 61.
Partially plugged opener seed tube.
Lift up drill, expose bottom of seed
tube and clean out.
Incorrect choice of coulter.
Opener disks not turning
freely.
Opener plugged with dirt.
Clean opener.
Planting conditions too wet.
Wait until drier weather.
Seed-Lok is plugging opener.
Drill frame height incorrect.
Check drill frame height, page 18.
Drill not level front-to-back in the
field.
Re-adjust hitch-height. See “Hitch
Height Adjustment,” page 18.
20 Series Opener side depth wheels
not adjusted correctly.
too tight - dragging on blade
too loose - allowing dirt between
blade and wheel
Check 20 Series Opener adjust-
ments, page 35.
20 Series Opener press wheel spring
force is set too high.
Check 20 Series Opener adjust-
ments, page 35.
Too much blade-to-blade contact.
Take shims under head of bolt and
put between opener and disk bearing,
see page 61 for information.
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.
Acremeter does not measure
accurately
NOTE:
Acremeter is most accu-
rate when seeding back and forth
with markers with few headlands,
curves and pointrows.
Incorrect tire size or air pressure
Correct tire size or air pressure, page
107.
Problem
Cause
Solution