1.受淹拖拉机的检修与保养检修前先用清水洗净拖拉机外表的泥沙污垢。(1)变速系统。首先拆卸离合器清除积水和杂物,如离合器花键轴锈蚀,可用砂布除锈,使从动盘能在花键轴上灵活移动,然后用柴油清洗离合器轴承、注入润滑脂。其次放净变速箱和后桥内齿轮油,向燃油箱内加入适量柴油,支起后桥,启动发动机(或用手动快速转动处于悬空状态的驱动轮),用一档和倒档启动各齿轮,运转3~5分钟后放出清洗油,若放出的清洗油中含泥沙杂质较多,应再洗一遍,直至除净箱体内泥沙,然后 1. Infected tractor maintenance and repair Before cleaning the tractor with a clean surface dirt. (1) transmission system. First remove the clutch to remove water and debris disassembly, such as clutch spline shaft rust, available emery cloth rust so that the driven disc can move flexibly on the spline shaft, and then clean the clutch bearings with diesel, into the grease. Second, put the net gearbox and the rear axle gear oil, add appropriate amount of diesel oil into the fuel tank, support the rear axle, start the engine (or manually rotate the drive wheel in a vacant state), and start gear with first gear and reverse gear , Run 3 to 5 minutes after the release of cleaning oil, if the discharge of cleaning oil containing sediment more impurities should be washed again, except until the net box body sediment, and then