Great Plains PT8030 V1012 Operator Manual - Manual (Page 26)

24
Section 4 Adjustments
10/10/12 PT6030 and PT8030 Pull-Type Planter 401-032M
Great Plains Mfg., Inc.
Check for Horizontal Alignment
Refer to Figure 4-3:
1.
Latch the appropriate hopper into place on the hopper
support.
2. The roll pin in the end of meter input shaft should be
centered (equal distances of the roll pin should pro-
trude from both sides of the shaft).
3. Rotate the input shaft so that the roll pin is horizontal.
4. Rotate the drive coupler so that the slots are horizon-
tal.
5. Release the clutch to engage the drive coupler with
the input shaft.
To adjust alignment:
•
With the hopper in place loosen the two 5/16" nuts.
•
Engage the clutch to the meter input shaft.
•
Align clutch with shaft and tighten 5/16" nuts to torque
values in the Specifications section.
Horizontal Alignment
Figure 4-3
12396
Depth Adjustment
The planting depth of the row unit is controlled by 2 walk-
ing gauge tires located next to the disks.
Adjust the planting depth as follows:
1. Raise the planter to remove weight from the gauge
tires.
Raise the T-handle and move it forward to decrease the
planting depth, see Figure 4-4. Moving the handle rear-
ward increases the planting depth. Small increments of
depth adjustment can be made by walking the T-handle
from side to side.
T-Handle Adjustment
Figure 4-4
12345
After one row is set to the desired depth, move the T-han-
dle on the other rows to the same location.
Down Force Row
Standard Spring Package
The standard down force spring package, consists of 2
non-adjustable springs applying approximately
90 lbs. of down force.
Optional Medium and Heavy Duty Spring Package
The medium and heavy duty spring packages consist of 2
or 4 adjustable springs, respectively. The medium duty
package can be adjusted from approximately 100 to 200
lbs. down force. The heavy duty package can be adjusted
from approximately 200 to 400 lbs. of down force.
Spring Adjustments
•
All spring adjustments must be made with the planter in
the fully raised position.
NOTE: The maximum down force stated before is
reached when the parallel arms are all the way up.
•
The spring package is adjustable from 90 lbs. to 325 lbs.
of down force when the parallel arms are horizontal.
Consult the “Down Force Pressure Chart” on page
25
to obtain the desired down force
NOTE: To adjust the spring tension, lift the plunger by
pulling up on the roll pin handle and sliding the handle
adjustment assembly into the appropriate hole, see
Figure 4-5.
.
•
Two springs can be purchased at your Great Plains
Dealer to make the medium duty package into a heavy
duty package or two springs can be removed from the
heavy duty package to make a medium duty package.
Add or subtract springs by removing the cotter key at the
end of the spring pivot rod. Slide the rod inward to add or
remove a spring from each side. Then attach or remove