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Great Plains
| 411-332M | 2019-02-19
28
3P3025AH
Operating Instructions
c. On planters with lift assist, if the inner lock pin is
locked in position
, then close the 90° lock
valve located on the right-hand wing flex
cylinder. This disables the gullwing function
during field operation of the lift assist. The 90°
lock valve should be opened to fold or unfold the
planter. or to resume normal gullwing function.
Understanding Gullwing Function
d. Up flex motion can also be limited by installing
cylinder stops on the wing flex cylinders
.
Install cylinder stops on the wing flex cylinder
rods if you do not want the maximum up flex.
Cylinder Stop Kits 810-423C are available, but
not supplied with the planter. Generally the only
reason to limit up flex is to reduce the time for
the wings to return from the gullwing position to
the planting position when the machine is
lowered.
When folding 15” and 20” planters, the cylinder stops must be
removed from the wing flex cylinders to prevent damage to the
planter.
1
Figure 24
90° Lock Valve
68090
5
Figure 25
Down Float Stop (lowered position),
Inner and Outer Wing Lock Pins
38367A
1
1