在修理小型风冷柴油机过程中发现,在拆卸工艺设计上存在着两个问题:一是曲轴主轴承盖上没有设置专用拆卸螺孔,使曲轴拆卸困难(建议厂家在生产时应设置此螺孔);二是更换曲轴正时齿轮端的主轴承时,由于该轴承与甩油圈及曲轴正时齿轮接触面之间的配合间隙较为紧凑,所以,在使用拉钩拆卸正时齿轮和主轴承时,易使甩油圈(铝合金件)变形或损坏,从而增加 In the process of repairing a small air-cooled diesel engine, there are two problems in the design of the disassembly process. First, there is not a special disassembly screw hole provided on the main bearing cover of the crankshaft, which makes it difficult to disassemble the crankshaft (it is suggested that the screw hole ); The second is to replace the crankshaft timing gear end of the main bearing, due to the bearing and the oil thrower and the crankshaft timing gear contact surface with the gap between the more compact, so when using the pull hook to remove the timing gear and the main bearing, Easy to make oil circle (aluminum alloy) deformation or damage, thereby increasing