Great Plains NP30A 30-foot Operator Manual - Manual (Page 98)

94 NP30A or NP40A Table of Contents Index Great Plains Manufacturing, Inc.
407-502M Table of Contents Index 2014-05-20
Row Implement Adjustments
Frame-Mounted Coulters (Option)
Refer to Figure 76
Coulters are factory-installed if ordered with the
implement, and are configured for in-row operation at
knife or tine shoe depth. They can be set for fixed or
limited castering.
Coulter depth is adjusted via the shaft , at the tool bar
clamp. Loosen the U-bolt nuts . Slide the shaft up or
down. Check coulter-to-knife/tine alignment. Re-tighten
nuts.
For in-row, adjust the coulter depth for a running depth
at the bottom of the knife or tine shoe, or about
3 ⁄
4
in (19mm) below application level.
For fields where frequent sharp turns are unavoidable,
you can reduce coulter plowing by allowing the coulter 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.
Refer to the Vantage I manual (204-376M) for further
coulter adjustments.
Coulter arms normally operate resting on their down
stops. They ride up and compress the springs briefly as
obstructions are encountered. Do not adjust the spring
tension
. If you service a coulter, reset the spring
tension to the factory length of:
9
7 ⁄
8
-10in (25.2 cm).
Figure 76
Frame-Mounted Coulter
31597
1
6
4
3
7
2
5
U
D
F B
5
1
2
3
5
6
7