PADDY FILED WORK MACHINE

PROBLEM TO BE SOLVED: To provide a paddy field work machine in which air in a front transmission case is hard to flow into a rear transmission case through a first lubricant passage and a second lubricant passage.SOLUTION: A paddy field work machine includes: a first lubricant passage 18 that is provided over a front transmission case 14 and a rear axle case 16, and in which lubricant flows from the front transmission case 14 to the rear axle case 16; and a second lubricant passage that is provided over the front transmission case 14 and the rear axle case 16, and in which lubricant flows from the rear axle case 16 to the front transmission case 14. The first lubricant passage 18 and the second lubricant passage are constituted to allow the rear axle case 16 to move up and down, and have a portion positioned above the rear axle case 16 at the highest position. 【課題】前伝動ケース内の空気が第一潤滑油通路及び第二潤滑油通路を介して後伝動ケースに流入し難い水田作業機が要望されている。【解決手段】前伝動ケース１４と後車軸ケース１６とに亘って設けられ、前伝動ケース１４から後車軸ケース１６に潤滑油が流れる第一潤滑油通路１８と、前伝動ケース１４と後車軸ケース１６とに亘って設けられ、後車軸ケース１６から前伝動ケース１４に潤滑油が流れる第二潤滑油通路と、を備え、第一潤滑油通路１８及び第二潤滑油通路は、後車軸ケース１６の昇降を許容可能に構成され、かつ、最も上昇した状態の後車軸ケース１６よりも上方に位置する部分を有している。【選択図】図２