Great Plains 3S-4000HDF Operator Manual - Manual (Page 60)

56 3S-4000HD/HDF Table of Contents Index Great Plains Manufacturing, Inc.
195-067M Table of Contents Index 2013-06-13
Frame Level
Refer to Figure 58
The 00HD Series openers are designed to produce
optimal results when the opener frames are level with the
ground. Operating with drill frame level is also
recommended, and this is set by hitch height (page 18).
If planting depth is not as desired on just one or two drill
sections, first check the setup items for “Leveling the
3S-4000HD/HDF Drill” on page 80. Then check and
adjust the following items:
• opener sub-frame adjustment: all gauge wheel
trunnions in same frame pivot holes -
see “Opener-Subframe Adjustment” on page 60
• opener pivot height: all openers pivoting in same hole
at their mounts (possibly excepting rows in tire tracks)
- see page 62
• opener press wheel height: all row units set the same -
see page 65
• opener spring down-force: all row units set the same
(possibly excepting rows in tire tracks) - see page 62.
Refer to Figure 59
This photograph illustrates openers too high in front.
Increase hydraulic pressure and/or lengthen opener
springs.
Check sub-frame pivot in use at higher pressures.
Refer to Figure 60
This photograph illustrates openers too low in front, also
known as “bulldozing”. Decrease hydraulic pressure
and/or shorten opener springs.
Check sub-frame pivot if pressures have recently been
reduced.
FigureSpacer
Figure 58
Frame & Openers Level
29131
FigureSpacer
Figure 59
Openers Too High in Front
29132
FigureSpacer
Figure 60
Openers Too Low in Front
29133