Great Plains 3PYPA Operator Manual - Manual (Page 87)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 83
03/20/2012 Table of Contents Index 401-647M
Seed-Lok® Seed Firmer Lock-Up
Optional Seed-Lok® firming wheels provide additional
seed-to-soil contact. The wheels are spring loaded and
do not require adjusting. In some wet and sticky condi-
tions the wheels may accumulate soil. To avoid problems
associated with this, you can lock-up the firmers.
Refer to Figure 113
To lock up Seed-Lok® wheels:
1. Raise planter. Insert lift assist cylinder locks.
2. Rotate Seed-Lok® lock-up handle 90 degrees
down on top of row unit body.
3. Push up on Seed-Lok® wheel until wheel arm
latches up.
Press Wheel Adjustment
The press wheels close the furrow which gently presses
the soil over the seed to ensure good seed-to-soil con-
tact for even emergence.
To provide consistent seed firming, the press wheels are
free to move downward from their normal operating posi-
tion. This system maintains closing/pressing action even
if the row unit arm is lifted when the disks encounter
obstructions.
There are three adjustments available on the press
wheel assembly and a fourth option on press wheel
assemblies with cast wheels:
Refer to Figure 114
1.
Down pressure (shown at maximum)
2. Wheel stagger (shown staggered)
3. Centering (see Figure 116 on page 84)
4. Cast Wheel Plow Angle (see Figure 117 on page 85)
Press Wheel Down Pressure
Handle
sets down pressure, which may need adjust-
ment for different soil types and field conditions.
• Relax the handle forward (in the direction of travel) for
decreased down pressure.
• Pull the handle back for increased down pressure.
Note: Higher press wheel down pressures reduce the
down force on the main row unit shank compo-
nents, such as the openers. High press wheel set-
tings may require an increase in overall row unit
down force. See page 68.
Null4:
Figure 113
Seed-Lok® Lock-Up
22909
2
3
1
2
3
Higher press wheel down pressures reduce the down
force on the main row unit shank components, such as
the openers. High press wheel settings may require an
increase in overall row unit down force. See page 68.
Null4:
Figure 114
Press Wheel Adjustments
25118
1
3
2
1
1