我乡有一台东方红—75拖拉机,润滑系经二号保养后,使用时发现油温比水温高20℃左右,油压也很高,并且机油散热器进油管弯曲处爆裂。经几次焊补仍不管用,最后只得更换一根新的油管,但新油管使用几小时后也爆裂了。检查发现:发动机低速运转时,在机油细滤器处听不到转子转动的“嘶嘶”声。我们判断细滤器转子可能被卡死。 My hometown has an Oriental Red -75 tractor, lubrication system by the second maintenance, the use of oil temperature was found to be 20 ℃ higher than the water temperature, the oil pressure is also high, and oil radiator into the bend at the pipe burst. After a few welding still does not work, and finally had to replace a new tubing, but the new tubing burst after hours of use. Check found: the engine low speed operation, the rotor at the oil filter can not hear the rotation of the “hissing” sound. We judge that the fine filter rotor may be stuck.