Great Plains 2015 Operator Manual - Manual (Page 17)

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15 4/18/05 Great Plains Mfg., Inc.
Section 4 Adjustments
2015 Three-Point Soybean Machine 173-088M
Closing Wheel Down Force Adjustment
Adjust the closing wheel down force to permit proper
closing of the seed trench. It is recommended to start with
the T-handle in the first of 4 notches, see Figure 4-5.
If the seed trench is not closing move the handle to the
next notch back and try again. Keep moving the handle
back until the seed trench is closing, by doing this elimi-
nates unnecessary down force and compaction. In
some field conditions, the T-handle can be left in the for-
ward slot to minimize down force.
Closing Wheel Alignment (Refer to Figure 4-6)
If one closing wheel is running in the seed trench or the
wheels are not centered over the seed trench, adjust the
closing wheels as follows:
1. Raise the drill slightly to remove weight from the
closing wheels.
2. Loosen the two 1/2" mounting bolts.
3. Turn the press wheel adjuster cam left or right to
center the wheels over the seed trench.
4. Tighten the 1/2" mounting bolts to the correct torque
value listed in "Section 2 Torque Values Chart" on
page 6.
Closing Wheel Offset
The 1x12 wheels can be offset to help prevent trash
from plugging the closing wheels. If the closing wheels
are not offset, the wheels should be located in the front
holes of the press wheel arm.
To offset the wheels, do as follows:
1. Raise drill slightly to remove weight on the closing
wheels.
2. Remove the 3/4” bolt attaching the wheel,
see Figure 4-9.
3. Move the wheel to the rear hole & attach with the
3/4" bolt. Tighten the bolt to the correct torque value
listed in "Section 2 Torque Values Chart" on page 6.
Closing Disk Adjustments
The closing disk options consists of two disks and a
6 1/2 x 12 press wheel. The disk down pressure can be
adjusted to provide closing of the seed trench.
To adjust the down pressure, ratchet the spring cam to
the next cam height by turning the head of the support
bolt clockwise. Refer to Figure 4-8.
Closing Wheel Adjuster
Figure 4-5
12346
Closing Wheel Alignment
Figure 4-6
12418
Closing Wheel & Offset
Figure 4-7
12347
Closing disk & Tube Holes
Figure 4-8
14913