Great Plains 1625AHL Operator Manual - Manual (Page 90)

86 1625AH Table of Contents Index Great Plains Manufacturing, Inc.
411-020M Table of Contents Index 2014-04-21
Press Wheel Adjustments
The press wheels close the furrow, gently pressing the
soil over the seed to ensure good seed-to-soil contact for
even emergence. The press wheels are free to move
downward from their normal operating position. This
system maintains pressing action even if the row unit
arm is lifted when the disks encounter obstructions.
Refer to Figure 92
There are three adjustments available on the press
wheel assembly:
1. Down pressure (below)
2. Centering (page 86)
3. Wheel stagger (page 87)
or angle (page 87)
Press Wheel Down Pressure
Handle
sets down pressure, which may need
adjustment 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
components, such as the openers. High settings
may require an increase in overall row unit down
force. See page 71.
Press Wheel Centering
If one press wheel is running in the seed trench, or the
wheels are not centered over the trench, the angle
of
the press wheel assembly can be adjusted as follows:
Refer to Figure 93
1.
Determine how far, and in which direction, the press
wheel assembly needs to move to center the wheels.
2. Raise planter and install gauge wheel and
mainframe lift cylinder locks. See “Raising Planter”
on page 29 and See “Install Lock Channels” on
page 31.
3. Pick some reference points on the unit to be
adjusted and an adjacent row unit. Measure the
distance between them.
4. Loosen the
1 ⁄
2
inch hex-head bolts , .
Note: Do not loosen any bolts forward of the aft two
hex-head bolts.
5. Turn the hex head cam under the forward hex
head bolt , and obtain the new distance between
the reference points.
6. Tighten both hex head bolts , .
Figure 92
Dual Press Wheel Adjustments
17888
3
2
1
1
1
Figure 93
Dual Press Wheel Centering
17889
1
2
3
4
1
2 3
4
3
2 3