Great Plains NP3000A Operator Manual - Manual (Page 87)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 83
2014-04-22 Table of Contents Index 407-613M
Vantage I Coulter Height and Castering
Coulter height is the main control for application height.
Coulters may need to be lowered for rows in tracks.
Coulters applicator-wide need adjustment as blades
wear.
If desired coulter depth cannot be achieved due to
challenging soil conditions, consider installing the
optional weight kit (page 141 and page 175).
Coulters may also be set for rigid row alignment, or
limited castering.
Refer to Figure 49
1.
The factory setting for coulter height is a distance
of 7.5 in (19.1 cm) from frame bottom to top of
coulter mount casting.
At a tool bar height of 25 in (63.5 cm) above
ground, this is a blade depth of 4 in (10.2 cm).
2. For fields where frequent sharp turns are
unavoidable, you can reduce coulter plowing by
allowing the coulters to caster at the pivot casting.
Loosen the jam nuts at
. Loosen the set screws
just enough to allow the casting to swivel. Re-tighten
the jam nuts. Do not remove the center stop screw.
3. As blades wear, keep the release height constant
by raising the applicator weldment on the coulter
arm. Loosen the bolts
. Slide the weldment up.
Tighten the bolts.
If the application height is still too low after this
adjustment, the coulter blades may be worn and in
need of replacement.
Refer to the Vantage I manual (204-376M) for further
coulter adjustments.
Vantage I Blade Wear
Blade wear is normal and the rate of wear varies with
field conditions and operating depth. Consider replacing
the blade when the initial diameter has been reduced by
1 to 2 inches.
Note: Although a nominal 20 inches in diameter, blades
are lightly larger and vary slightly with blade style.
Figure 49
Vantage I Coulter, Left
31655
6 1
4
3
2
5
3
1
2
5
4
6
Figure 50
Vantage I Coulter, Right
31597
5
5