1.一台上海-50型拖拉机工作一段时间后,出现气缸盖与排气管之间渗机油故障。此故障出现后,不仅消耗机油过多,而且影响机车的整洁。出现此种故障其主要原因是:(1)活塞环在活塞环槽中的边间隙过大;(2)活塞环在活塞环槽中卡死;(3)活塞环磨损过大;(4)气缸套磨损过大。 排除方法:卸下气缸盖后,仔细清除气缸上部未磨损部位的积炭,取出活塞,把活塞环 1. A Shanghai -50 tractor after working for a period of time, there is leakage between the cylinder head and exhaust pipe oil failure. This failure occurs, not only consume too much oil, but also affect the locomotive clean. The main reasons for such failure are: (1) piston ring in the piston ring groove side gap is too large; (2) the piston ring stuck in the piston ring groove; (3) piston ring wear is too large; (4) Cylinder liner wear is too large. Remedy: Remove the cylinder head, carefully remove the upper cylinder unworn parts of the coke, remove the piston, the piston ring