Great Plains YP3025 Operator Manual - Manual (Page 96)

92 YP3010HDP/3020P/3025 Table of Contents Index Great Plains Manufacturing, Inc.
401-703M Table of Contents Index 2013-09-09
Marker Shear Bolt Replacement
Refer to Figure 121
If a marker gets caught or hits an obstruction, it is
designed to fail a shear bolt at the fold, pivot on a pin,
and swing back.
The shear bolt is a hex head cap screw,
1 ⁄
2
-13 x 2
1 ⁄
2
in Grade 5, Great Plains part number
802-130C, plus a
1 ⁄
2
-13 lock nut, Great Plains part
number 803-019C.
Install a replacement shear bolt on the vertical faces on
the side opposite from the pivot bolt. Do not use a higher
grade bolt, or marker hang-ups may result in machine
damage. Do not use a lower grade bolt, or you may
experience nuisance shears.
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 92 (which depicts 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 YP30 planter, and periodically thereafter, for
example, if soil conditions change dramatically.
Refer to Figure 122 (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 92 for adjustments.
Figure 121
Marker Shear Bolt
29292
Figure 122
Wing Level Check
29278