| 摘要 |
A winged implement includes an hydraulic control circuit having two operator-controlled valves, including a work valve and a transport valve. Using only these controls, and without leaving the tractor cab, the operator can (1) fold the implement for transport; (2) unfold the wings; (3) place the implement in the field use position with substantial constant down pressure on the wings; and (4) raise the wings and center section to an intermediate position with the wings inclined upwardly for end row turns.
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