Great Plains YP4425A Operator Manual - Manual (Page 108)

104 YP4425A Table of Contents Index Great Plains Manufacturing, Inc.
401-805M Table of Contents Index 2012-02-23
Wing Leveling
Center Section Level Check
Vertical height and side-to-side level of the center section
cannot be adjusted, but needs to be verified before
checking/adjusting the wings. Soil accumulation on the
wheels, for example, can cause the center section to tilt.
Refer to Figure 12 on page 104 (which depicts a twin-row
YP40 planter on a paved surface - actual measurement must
be with rows pulled forward in soil)
1.
Measure the elevation of both left and right sides of
the planter center section, at the ends of the center
section tool bar.
Wing Leveling
Wing leveling check/adjustment is required prior to first
use of the YP4425A planter, and periodically thereafter,
for example, if soil conditions change dramatically.
Refer to Figure 124 (which depicts planter on a paved surface
- actual measurement must be with rows pulled forward in
soil)
2.
Measure the outside ends of each wing section. This
should be the same as measured at step 1 above.
See page 104 for adjustments.
Wing Leveling, Inboard End
Wing leveling check/adjustment is required prior to first
use of the YP4425A Planter, and periodically thereafter,
for example, if soil conditions change dramatically.
Before performing this operation:
• Lower unfolded planter in soil. Pull forward until gauge
and caster wheels are in normal planting position.
• Row unit coulter/planting depths, and row unit
down-pressures must all be equal.
• Check center section height and level (page 20).
Refer to Figure 125
1.
Measure the height of the inboard end of each wing,
directly under the wing flex pivot.
2. Compare this height to that of the center section
obtained at step 1 on page 104.
3. If the heights differ by more than 1 inch (2.5 cm),
check them again after leveling the wing ends. If they
still differ, the thrust washers in the wing pivots may
be worn and in need of replacement.
Note: Any unevenness in ground that tilts the wings or
center section causes the inner wing ends to move
up or down slightly with respect to the center frame.
Figure 124
Wing Level Check
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Figure 125
Wing Level Check, Inboard
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