Great Plains 3N-4025P Operator Manual - Manual (Page 76)

72 3N-40P Table of Contents Index Great Plains Manufacturing, Inc.
196-538M Table of Contents Index 2014-01-29
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 142
• coulter depth setting - “Frame-Mounted Coulters” on
page 75
• coulter mount adjustment - “Individual
Frame-Mounted Coulter Depth” on page 77
• coulter down-force spring setting - “Frame Weight” on
page 93
• row unit down-force spring setting - see:
“10P Series Row Unit Down Pressure” on page 96
“10HD Row Unit Down Pressure” on page 103
“20P Series Row-Unit Down Pressure” on page 110
“25 Series Row Unit Down-Pressure” on page 116
• press-wheel height setting - see:
“10 Series Opener Depth” on page 99
“10HD Press Wheel Adjustments” on page 107
“20P Series Press Wheel Adjustments” on page 114
“25 Series Press Wheel Adjustments” on page 122
Frame Height
Frame height is determined by an adjustable hydraulic
depth control valve, and has a significant effect on
planting depth.
Frame height adjustment methods depend on coulter
configuration. Frame-mounted coulters (FMC) are
standard on some 3N-40 models and optional on others.
The 3N-4010HDP accepts either FMC or unit-mount
coulters (UMC), although only one type of coulter can be
installed simultaneously.
For adjustments:
Refer to Figure 89
1.
Frame-Mounted Coulters (FMC)
frame height information begins on page 75.
2. Unit-Mounted Coulters (UMC, 10HD and 25P only)
frame height information begins on page 101.
3. No Coulters
use the same frame height setup as UMC, page 101.
Frame Height without
Frame-Mounted Coulters
Use these instructions with a drill having no coulters, or
having unit-mounted coulters (UMC). Adjustments to
individual unit-mounted coulters themselves (10HD
models only) are on page 101.
Figure 89
Coulter Configurations
27211
1 2 3
27213