34Great Plains
| | 4/22/19
Great Plains
|
34
196-366m
Adjustments
Coulter Adjustments
The drill is assembled so that when the coulters are at
two inches deep, the seeding depth is about one inch.
This is a good baseline setting for most seeding
operations. As field conditions warrant, you can change
settings on the entire drill or individual coulters.
To prevent uneven seeding depth and excess opener wear, run
coulters at least 1 inch below seeding depth.
Hydraulic Depth Control
Refer to Figure 12
The field-lift cylinder on the left transport wheel is
equipped with a hydraulic valve that regulates coulter
depth. Use the valve and knob shown to adjust coulter
depth.
Turn the knob clockwise to lower the coulters. Each
clockwise rotation will lower the coulters about 3/32
inches. Make depth adjustments with the implement
slightly raised. After adjusting the valve, raise and lower
the implement several times and recheck coulter depth.
The depth stop regulates depth on all coulters. If the
ends of either box run higher or lower than the center,
the field-lift system may be out of phase or have air in it,
or the frame sections may not be level. Refer to
“Rephasing Lift System,” page xxvii,
“
Bleeding Lift
Hydraulic
s,”
page xxii, or “Leveling Frame Side-to-Side,”
16271
Raise Coulters
Lower Coulters
Figure 12
Depth Control Adjustment