东方红—75/54拖拉机发动机转速随负荷而变化,使发动机止推瓦磨损加剧,造成曲轴轴向间隙增大,为此应即时更换。 为避免更换止推瓦时造成许多零件不必要的拆卸,巧换止推瓦的方法可为:放出油底壳机油,拆下油底壳(不用卸下发动机,可直接在车上更换),将第五道曲轴瓦座拆下,取下止推瓦和下瓦片(不要拆下其它座瓦)。然后将M6×25螺栓插到第五道曲轴 Dongfanghong -75 / 54 tractor engine speed varies with load, the engine thrust pad wear increased, resulting in crankshaft axial clearance increases, this should be replaced immediately. In order to avoid unnecessary disassembly of many parts when replacing the thrust washer, the way to change the thrust washer is to discharge the oil in the oil pan, remove the oil sump (without replacing the engine, replace it directly in the vehicle) Remove the fifth crankshaft bush, remove the thrust shoe and the lower shoe (do not remove the other shoe). Then insert the M6 ​​× 25 bolt into the fifth crankshaft