Great Plains 3N-4020 Operator Manual - Manual (Page 64)

60 3N-4010F/3N-4010HDF/3N-4020F Table of Contents Index Great Plains Manufacturing, Inc.
196-359M Table of Contents Index 2013-10-29
Frame Level
When beginning planting, check frame level with row
units in level ground.
If one or both wings are angled up or down, check and
adjust the following items:
• “Level Frame Side to Side” on page 102
• coulter depth setting - see “Frame-Mounted
Coulters” on page 63
• coulter mount adjustment - see “Individual
Frame-Mounted Coulter Depth” on page 65
• coulter down-force spring setting - see “Frame
Weight” on page 68
• row unit down-force spring setting - see:
“10 Series Row Unit Down Pressure” on page 71
“10HD Row Unit Down Pressure” on page 78
“20 Series Row-Unit Down Pressure” on page 85
• press-wheel height setting - see:
“10 Series Opener Depth” on page 74
“10HD Press Wheel Adjustments” on page 82
“20 Series Press Wheels” on page 89
Frame Height
Frame height is determined by an adjustable hydraulic
depth control valve, and has a significant effect on plant-
ing depth.
Frame height adjustment methods depend on coulter
configuration. Frame-mounted coulters (FMC) are stan-
dard on some 3N-40 models and optional on others. The
3N-4010HDF accepts either FMC or unit-mount coulters
(UMC), although only one type of coulter can be installed
simultaneously.
For adjustments:
Refer to Figure 86
1. Frame-Mounted Coulters (FMC)
frame height information begins on page 63.
2. Unit-Mounted Coulters (UMC, 10HDF only)
frame height information begins on page 76.
3. No Coulters
use the same frame height setup as UMC, page 76.
Figure 86
Coulter Configurations
27211
1 2 3