Great Plains PD8070 Operator Manual - Manual (Page 27)

1/24/2006 401-266M
25 Adjustments
Coulter Depth
Optional coulters allow row unit to penetrate tough
ground conditions. Adjust coulters to run at the same
depth as the opener disks.
Refer to Figure 14
1. To adjust coulter depth, loosen 3/4-inch jam nut (1)
and 3/4-by-3-inch hex bolt (2).
2. By turning cam hex (3), rotate cam casting to the
desired height. Each notch represents about 1/4
inch of depth.
3. Torque bolt and jam nut to values recommended on
Torque Values Chart, “Appendix,” page 52.
Opener Seeding Depth
Seeding depth is controlled by gauge wheels mounted
on the sides of the opener disks.
Refer to Figure 15
To adjust seeding depth:
1. Raise planter to remove weight from side gauge
wheels.
2. Raise and move T-handle.
• Move T-handle forward for deeper seeding depth.
• Move T-handle back for shallower seeding depth.
3. Move T-handles on all row units to the same loca-
tion.
Side Gauge Wheels
Refer to Figure 18
The side gauge wheels have two, interrelated
adjustments:
• angle of side gauge wheel, and
• distance between side gauge wheel and opener
disk.
Refer to Figure 17
Adjust side gauge wheel angle so the wheels contact
the opener disks between 4 and 8 o’clock.
At the same time, keep the side gauge wheels close to
the opener disks so openers do not plug with soil or
trash but far enough out so the disks and wheels turn
freely.
To adjust side gauge wheels:
1. Raise implement slightly to remove weight from
side gauge wheels.
15053
Figure 14
Row Unit Mounted Coulter
12345
Figure 15
Opener Depth Adjustment
Side Gauge
Wheel
Side Gauge
Wheel
Opener
Disks
Incorrect Correct
Figure 16
Side Gauge Wheels
17812
8 o’clock
4 o’clock
Figure 16
Side Gauge Wheels