| 摘要 |
PROBLEM TO BE SOLVED: To improve the durability in a power transmission structure between a steering shaft and a pitman arm.SOLUTION: A work vehicle includes an arm support shaft 45 which is disposed at a bottom part of a transmission case 3 so as to swing a pitman arm 44. A pinion gear 42 provided in a lower part of a steering shaft 41 in the transmission case 3 is engaged with a steering gear 46 provided at the arm support shaft 45 in the transmission case 3 to allow the steering shaft 41 and the arm support shaft 45 to coordinate. The steering shaft 41 is supported at upper and lower positions sandwiching the pinion gear 42 by a lower part first bearing part 43d provided at the lower side of the pinion gear 42 and an upper part first bearing part 43u provided at the upper side of the pinion gear 42 in a lower part of a space in the transmission case 3. |
