红旗100和上海120推土机驱动轮漏油是较普遍的问题,其漏油部位多发生在封油面处,有的经多次返工仍不能根除。漏油原因主要是油封(自紧油封)质量差,钢环及软木环粘接不牢,钢环翘曲不平,油封预压量过小,封油面产生划痕,密封组件间压力降低,组装时夹进异物或将油封碰伤等。 Red flag 100 and Shanghai 120 bulldozer drive wheel oil leakage is a more common problem, the oil leakage parts occurred in the sealing surface, and some can not be eradicated after repeated rework. The main causes of oil leakage are oil seals (self-tightening oil seals) of poor quality, poor adhesion of steel rings and cork rings, uneven warpage of steel rings, too small pre-pressure of oil seals, scratches on sealing surfaces, and pressure drop between seal components. Foreign matter is caught in the assembly or the oil seal is scratched.