Great Plains PD8070 Operator Manual - Manual (Page 29)

1/24/2006 401-266M
27 Adjustments
Refer to Figure 21
Alignment. If one closing wheel is running in the
seed trench or closing wheels are not centered
over the seed trench, adjust closing wheels as
follows.
1. Raise planter slightly to remove weight from
closing wheels.
2. Loosen two 1/2-inch mounting bolts (1).
3. Turn adjuster cam (2) left or right to center
wheels over the seed trench.
4. Torque 1/2-inch mounting bolts as recom-
mended on Torque Value Chart, “Appendix,”
page 52.
Refer to Figure 22
Offset. The closing wheels can be offset to help
prevent trash from plugging the closing wheels.
To offset the closing wheels:
1. Raise planter slightly to remove weight from
closing wheels.
2. Remove 5/8-inch bolt attaching wheel to
press wheel arm.
3. Move closing wheel to rear mounting hole and
reattach with 5/8-inch bolt. Torque bolt as rec-
ommended on Torque Values Chart, “Appen-
dix,” page 52.
If the closing wheels are not offset, mount wheels
in the front holes of press wheel arm.
Closing Disk Option
Refer to Figure 23
For proper seed-to-soil contact, the closing disks
must have enough down pressure to close the
seed trench without unnecessary soil
compaction.
To adjust down pressure on closing disks, ratchet
spring cam to next cam height by turning head of
support bolt (1) clockwise.
17889
Figure 21
Closing Wheel Alignment
17893
Figure 22
Closing Wheel Offset
17890
Figure 23
Closing Disk and Tube Holes