Great Plains NTA3007HD Operator Manual - Manual (Page 96)

92 NTA907HD or NTA3007HD
166-207M 04/04/2011
Frame-Mounted Coulters (Option)
Frame-mounted coulters are used “in row” and not
“zone”. They are intended to prepare the soil directly
ahead of the seed furrow.
The factory setting, with fresh coulter blades, is a coulter
depth of 6.4cm (2.5in).
There are several adjustments for frame-mounted
coulters:
Refer to Figure 99
1.
Frame height:
If running the openers at less than full extension of
the lift cylinders, coulter depth
is directly affected
by opener height.
Normally, the opener T-handle is adjusted to set
opener depth
, and the coulter is left at the fixed
difference between coulter and opener depth.
2. Individual coulter down-force:
This is a spring adjustment for rows in tracks, or all
rows - in unusually light or heavy no-till conditions.
See page 93.
3. Coulter-to-row alignment:
Coulters are factory aligned so that the coulter disk
prepares the furrow directly ahead of the opener
disks.
After any coulter or row maintenance, check that
these components are still aligned. Adjust at the
coulter mounting clamp at the tool bar. Re-check
coulter height if any adjustments are made.
In regular or heavy no-till conditions, adjust opener depth
to set:
the coulter depth to about 13mm (
1 ⁄
2
in) deeper than
seeding depth.
In addition to checking depths at setup, be sure to check
actual seeding results while planting.
Replace coulter blades when their diameter is worn to
less than 40cm (15
3 ⁄
4
in).
Null4:
Figure 99
07HD Coulter and Row Unit
29419
4 5
4
5
4
5