Great Plains PD8070 Operator Manual - Manual (Page 28)

PD8070
401-266M 1/24/2006
26
Refer to Figure 18
2. Loosen hex-head bolt. Move wheel and
arm out on o-ring bushing.
Refer to Figure 19
3. Loosen pivot bolt. Turn hex adjuster so
roll pin (1) is at 1 o’clock. Use this as the
starting point for adjustments.
4. Move wheel arm in so side gauge wheel
contacts opener disk. Tighten hex-head
bolt to clamp arm around bushing and
shank.
5. Check the wheel-to-disk contact. Lift
wheel and arm. When let go, the wheel
should fall freely.
• If wheel does not contact disk from 4
to 8 o’clock, move hex adjuster until
wheel is angled for proper contact with
disk.
• If wheel does not fall freely, loosen
hex-head bolt and slide wheel arm out
just until wheel and arm move freely. Re-
tighten hex-head bolt.
6. Keep turning hex adjuster and moving
wheel arm until the wheel is adjusted
properly. When satisfied, tighten pivot
bolt to 110 foot-pounds.
1 x 12 Closing Wheel Option
The closing wheels can be adjusted for down
pressure, alignment and offset.
Refer to Figure 20
Down Pressure. Adjust the closing wheels
so they have enough down force to close
the seed trench without unnecessary
compaction.
Start with T-handle in first notch. If the seed
trench does not close, move handle to next
notch and try again. Keep moving handle
back just until the seed trench closes.
17916
Figure 18
Loosen Hex-Head Bolt
Starting Point
17914
Figure 19
Turn Hex Adjuster
17888
Figure 20
Closing Wheel Down Pressure