| 摘要 |
PROBLEM TO BE SOLVED: To increase an attitude change amount while reducing a travel manipulated variable of a machine main body for a ground contact part of a running device and facilitate the operation for operating an attitude controller of a work vehicle up to each operation limit position when performing rolling operation and pitching operation. SOLUTION: Either of two driving means positioned in a front part and a rear part on the left side and two driving means positioned in a front part and a rear part on the right side are driven and stopped. When either of two driving means which are driven and operated reach a terminal position in a driving operation possible scope, the execution of rolling operation is stopped, and then a command for continuing the execution is given during the execution of rolling operation driving and operating two other driving means, terminal reach operation that the other driving means which do not reach the terminal position in the driving operation possible scope reach the terminal position while the driving means reaching the terminal position of the driving operation possible scope are held at the terminal position is executed.
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