Great Plains YP1625A Operator Manual - Manual (Page 80)

76 YP1125A & YP1625A Table of Contents Index Great Plains Manufacturing, Inc.
401-625M Table of Contents Index 2013-08-13
Press Wheel Adjustments
Attached to the rear of each row-unit is one of several
press wheel options.
To provide consistent seed firming, 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 discs encounter
obstructions.
Refer to Figure 103
Press wheels are attached to each row-unit body. The
press wheels close the seed trench and gently press soil
over seed.
An adjustable spring in the press wheel mechanism
creates the down pressure needed to close the seed
trench. The amount of force needed will vary with field
conditions.
To adjust, move adjustment handle.
• For less down pressure, move handle forward toward
planter.
• For more down pressure, move handle back away
from planter.
Note: Increased press wheel spring force may require
increased row-unit down force to maintain depth.
Note: The factory setting on the press wheel is staggered
to achieve optimum residue flow.
Refer to Figure 104
To adjust press wheels from staggered to even, remove
5 ⁄
8
inch bolt , and lock washer . Reinstall spacer ,
press wheel and hardware to the other hole location.
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 105
1.
Determine how far, and in which direction, the press
wheel assembly needs to move to center the wheels.
2. Raise planter and install lift assist cylinder locks. See
“Important Safety Information” on page 1.
3. Loosen the
1 ⁄
2
inch hex-head bolts and .
4. Turn the hex head cam under the forward hex
head jam bolt , and move the required amount.
5. Tighten both hex-head bolts and .
If press wheel adjustments do not provide satisfactory
furrow closing, your conditions may require alternate
press wheels. A variety of wheel assemblies are
available. Consult your Great Plains dealer.
Figure 103
Press Wheel Adjustment
21948
More Down
Pressure
Less Down
Pressure
Figure 104
Press Wheel Stagger
22907
2
3
4
1 5
1 3 4
5
Note: Do not loosen the two forward bolts.
Figure 105
Press Wheel Centering
(View from beneath opener)
25277
9
8
7
c
7
8 9
c
9
8 9