| 摘要 |
PROBLEM TO BE SOLVED: To provide a layout of a passage through which lubricant is circulated in a transmission case so as to downsize and reduce the production cost of the transmission of a working vehicle equipped with HST for driving for running and HST for turning. SOLUTION: This transmission of a working vehicle is provided with right and left axles that are differentially connected to each other and two HSTs 25, 28 for changing transmission continuously power to the axles. This transmission is configured such that when operating one HST 25 the right and left axles are driven in the same direction so as to make the vehicle body to go straight, and when operating the other HST 28 a relative rotation difference is given to the right and left axles so as to turn the vehicle body. The two HSTs 25, 28 are disposed to face each other, sandwiching a transmission case 22. Further, lubricant introduced into a housing of one of the two HSTs is caused to pass through a pipe member 79, to be introduced to the housing of the other HST, and to be discharged to the transmission case through the housing of the HST.
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