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3P3025AH
Operating Instructions
Great Plains
| 411-332M | 2019-02-19
25
Wing Lock and Wing Flex Option
The stack fold planters can be configured as either a
rigid wing machine with the wing lock option, or a flexible
wing machine with the wing flex option. Narrow row
models (15” and 20”) are only equipped with the wing
flex option.
Wing Lock Option
With the wing lock option, rigid links hold the top fold
linkages in a fixed position. The planter unfolds to a level
position. The wings are locked into that position by
installing the inner and outer wing lock pins.
The outer wing lock pins are installed to lock the fold
extension frame and outer wing frame together.
The inner wing lock pins are installed to hold the wings
rigid and protect the fold cylinders.
Wing Flex Option
With the wing flex option, wing flex cylinders allow the
wings to flex up and down. The wing flex cylinders are
tied into the fold hydraulic circuit. They completely retract
during the fold/unfold operation by receiving oil from the
folding circuit.
Every time the machine is raised the wing flex cylinders
must also retract to gullwing the planter and allow the
openers to clear the ground.
Figure 19
Inner and Outer Wing Lock Pins
38367A
1
2
1
2
1
Figure 20
Wing Flex Cylinders
68090
1