我连有一台铁牛-55型拖拉机,发现油底壳“倒喘气”(从加油口往外喷气),并且从机油量油尺孔往外冒机油,一个班次要耗机油2～3公斤。开始我们认为是活塞、活塞环与缸套密封不严而产生漏气,但根据机车情况一分析,认为不是上述原因:1.因为该机修后使用时间不长,活塞环是新换的,前一段时间工作一直正常;2.机车未发现有烧机油现象。于是,我们检查了气缸盖罩上的 I even had a Tractor-55 tractor and found that the oil sump was “out of breath” (jetted out of the fuel filler port) and took oil from the dipstick hole of the oil and ran 2 to 3 kg in one shift. Initially we think that is the piston, piston ring and cylinder liner lax seal, but according to an analysis of the locomotive, that is not the above reasons: 1. Because the machine does not last long use, the piston ring is a new change, the former Work has been normal for some time; 2 locomotive did not find a phenomenon of burning oil. So, we checked the cylinder head cover