
2019-04-12
417-459M
NP2540
Adjustments
90
Vantage I Coulter Force
Coulter springs are set to 400 pounds. In normal
operation at target running depth, the spring is at full
extension or only slightly compressed. It compresses
briefly as obstructions and denser soil are encountered.
In heavy no-till conditions, you may observe the springs
in compression most of the time. This means that the
blades are not reaching the desired coulter depth. If
applicator weight is available, you can increase the
spring down-force to compensate.
•
In light but rocky conditions, the factory spring
setting may be higher than needed. You can extend
blade life by reducing the force at which the blades
ride up over obstructions.
•
Applicator weight, in almost all applicator
configurations, is generally sufficient to load the
coulters to the full 400 pound factory setting.
Setting all springs above 400 pounds might require
the optional weight kit with some lighter triple-coulter
configurations.
If all springs are continuously in compression, the
coulters can lift the wing frames off the ground (at the
gauge wheels), resulting in uneven coulter depth
and/or uneven seed depth. If already operating at
maximum down-pressure, reduce coulter depth.
To adjust the coulter spring:
1. Raise the applicator and install transport locks.
2. Determine the new spring length
desired
.
3. Measure the current length of the spring(s) to be
changed. If already as short as 9
3
/
4
inches, or as
long as 10
1
/
4
inches, do not further adjust them.
4. Loosen the jam nut
.
5. Rotate the adjuster nut
until the spring is at the
new length. Tighten the jam nut.
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.
Although a nominal 20 inches in diameter, blades are
lightly larger and vary slightly with blade style.
Spring Length
Force at Blade
10.25 inches
300 pounds
10.0 inches
400 pounds
9.75 inches
525 pounds
5
6
7