GREAT PLAINS Yield-Pro YP4025A-48TR20, Operator'S Manual, Page: 122 / 190

2019-03-19 Table of Contents Index 411-198M
YP4025A-48TR20 Table of Contents Index Maintenance and Lubrication 118
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 13 on page 118 (which depicts
product 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 product 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 YP4025A-48TR20 product, and periodically
thereafter, for example, if soil conditions change
dramatically.
Refer to Figure 132 (which depicts product 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 118 for adjustments.
Wing Leveling, Inboard End
Wing leveling check/adjustment is required prior to first
use of the implement name, and periodically thereafter,
for example, if soil conditions change dramatically.
Before performing this operation:
•
Lower unfolded product 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 23).
Refer to Figure 133
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 118.
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.

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 132
Wing Level Check
29278
Figure 133
Wing Level Check, Inboard
29291