Great Plains YP4025F-1670 Operator Manual - Manual (Page 103)

Great Plains Manufacturing, Inc. Table of Contents Index Maintenance and Lubrication 99
2014-09-08 Table of Contents Index 401-571M
Wing Leveling, Inboard End
Wing leveling check/adjustment is required prior to first
use of the YP40 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 23).
Refer to Figure 126
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 98.
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.
Wing Leveling, Outboard End
Refer to Figure 125 on page 98 and Figure 127
1. Measure from the bottom of the wing tool bar to the
ground at the outer end of each wing.
2. Compare to the measurement at the outer end of the
center tool bar, at the wing pivot location. All
measurements should be identical, and close to
26 inches (66 cm).
3. If measurements do not match, loosen upper gauge
wheel jam nut
, and adjust eyebolt link length with
adjuster nut .
4. If adjustments are needed on either side, re-check
the other side after each adjustment, and re-adjust it
as needed.
5. Once level, tighten the lock nut .
Figure 126
Wing Level Check, Inboard
29291
Figure 127
Leveling Outer Wing
29314
2
1
1
2
1