Great Plains 3S-4010HDF Operator Manual - Manual (Page 45)

Great Plains Manufacturing, Inc. Adjustments 41
03/28/2012 196-522M
Frame Height without Frame-
Mounted Coulters
Use these instructions with a drill having no coulters, or
having unit-mounted coulters. Adjustments to individual
unit-mounted coulters themselves are on page 45.
If the drill has frame-mounted coulters, use the height
procedure on page 37.
Refer to Figure 46
Frame height
is measured from the bottom of the
opener tool bar (the largest of the tool bars), and is mea-
sured with the drill lowered.
The recommended height depends on your field condi-
tions (see table below), and whether unit-mounted
coulters are installed.
For no-till conditions, a 26in (66cm) height allows the
opener parallel arms to run parallel to the ground giving
the opener the maximum upward or downward flotation.
In loose or conventional planting conditions, a frame
height above 26in (66cm) helps keep the no-till spring
forces from burying the openers.
Note: Setting the frame above the 26in (66cm) limits the
opener downward flotation.
Note: Running with the frame below 26in (66cm) limits
opener upward flotation and could cause opener
damage especially at center of the drill.
Crushing Hazard: Make all down-stop adjustments with cir-
cuit in neutral and drill raised (actuator plunger not in contact
with down-stop). Loosening the down-stop with circuit active
and drill lowered results in rapid lowering of the frame.
Field Result Inconsistency Risk:
Make sure the drill is level and the lift system bled and re-
phased before adjusting the tool bar height. If the center sec-
tion does not consistently stop at the set height, or the wings
do not run at the same height as the center, the lift system may
have air or be out of phase (above), or the wings may not be
level. See “Leveling Drill” on page 66.
Conditions
Opener
Tool Bar Height
Light no-till, or conventional till-
age, with unit-mounted coulters
or no coulters
Above 26in
(above 66cm)
Moderate to challenging no-till
with unit-mounted coulters At 26in
(66cm)
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27213
FigureSpacer:
Figure 46
UMC/NC Frame Height
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