Adjustments, Planting depth, Adjustments planting depth – Great Plains 3N-4020 Operator Manual User Manual

Page 63

2013-10-29

Table of Contents

Index

196-359M

Great Plains Manufacturing, Inc.

Table of Contents

Index

Adjustments

To get full performance from your drill, you need an
understanding of all component operations, and many
provide adjustments for optimal field results.

The 3N-4010F, 3N-4010HDF and 3N-4020F have dou-
ble-disk parallel-arm openers with depth-controlling
press wheels. This system provides accurate depth con-
trol and seed placement over uneven terrain. The follow-
ing is an introduction to the basic seeding components
and how they work.

Each opener is mounted on a floating opener frame, held
parallel to the ground. Opener bodies are staggered for
easy soil flow. A spring provides the down pressure nec-
essary for opener double disks to open a seed furrow.
The spring allows openers to float down into depressions
and up over obstructions. Trailing press wheels close the
furrow. Individual openers can be adjusted to account for
tire tracks.

Even if your planting conditions rarely change, some of
these adjustment items need periodic attention due to
normal wear.

Planting Depth

Setting nominal planting depth, and achieving it consis-
tently, is affected by multiple adjustable drill functions,
from greatest to least effect they are:

• Coulter Height;

• Opener Depth (Press Wheel and/or Side Wheel)

• Row Unit Down Pressure;

• Frame Weight;

• Disk Blade Adjustments (as blades wear).

Adjustment

Page

The Adjustment Affects

Level Frame Side to Side

102

Center-vs-wing planting consistency

Level Frame Front to Rear