我厂于年初承修一辆使用不到一年的长安之星新车,报修项目是发动机前端漏机油。经检查发现曲轴前油封处漏油,但更换曲轴前油封后漏油更严重。在进一步检查中发现,曲轴前油封轴颈处有两道与曲轴轴线平行的沟(长约为 I plant in the beginning of a less than a year to use the Changan Star car repair, repair project is the engine front leakage of oil. After inspection found crankshaft oil seal at the front of the oil, but the replacement of the crankshaft oil seal before the more serious oil spills. Upon further examination, it was found that there were two grooves parallel to the crankshaft axis at the crankshaft front oil seal journal