Great Plains 3N4010HDA Operator Manual - Manual (Page 38)

34 3N-4010HDA Table of Contents Index Great Plains Manufacturing, Inc.
196-444M Table of Contents Index 2013-09-24
Opener Frame Height
Frame height adjustment methods depend on coulter
configuration:
Refer to Figure 28
1.
Frame-Mounted Coulters
frame height information begins on this page.
2. Unit-Mounted Coulters
frame height information begins on page 38.
3. No Coulters
use the same frame height setup as #2, page 38.
Frame-Mounted Coulters
Frame-mounted coulters are an optional alternative to
unit-mounted coulters. Only one type of coulter may be
installed. See page 70 for ordering information.
Frame-mounted coulters are used “in row” and not
“zone”. They are intended to prepare the soil directly
ahead of the seed furrow.
With frame-mounted coulters, the coulter depth controls
opener depth and performance. Set the frame height to
achieve the desired coulter depth.
There are three adjustments for frame-mounted coulters:
Refer to Figure 29
4.
Frame height - the running depth of all coulters as a
group. This is set by a hydraulic stop, the next topic.
5. Individual coulter depth - a mechanical adjustment
for a few rows in tire tracks. See page 36.
6. Individual coulter down-force - this is a spring adjust-
ment for rows in tracks, or all rows - in unusually light
or heavy no-till conditions. See page 37.
Frame Height - Frame Mounted Coulters
Refer to Figure 30
In regular or heavy no-till conditions, set
the coulter depth to about 1in (2.5cm) deeper than
seeding depth.
For example, if
the desired seeding depth is 1in (2.5cm), set
the coulters to run at 2in (5.1cm) deep.
Setting coulters too deep for conditions can cause
opener plugging and uneven or too-deep seed depth. In
light no-till or conventional till conditions, it may be
necessary to set coulter depth
to less than 1in (2.5cm)
below seeding depth , or even 1 /
4
in (6mm) above
seeding depth.
In addition to checking depths at setup, be sure to check
actual seeding results while planting.
Figure 28
Coulter Configurations
27211
1 2 3
Figure 29
FMC Coulter Adjustment Points
20274
27215
4
5
6
Figure 30
FMC Coulter to Opener Depth
27070
7 8
7
8
8
7
7
8