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1．维修要点(1)薄壁轴瓦不允许修刮,只能按相应尺寸选配现代发动机曲轴主轴承和连杆轴瓦的耐磨合金涂层均很薄,加工的尺寸精度很高,粗糙度很低,一般不允许修刮,只能按相应的尺寸选配;如果没有合适尺寸的轴承,可采用基孔制的方法磨削曲轴。对于三层合金轴瓦(由钢背-铜铅合金-表层构成),电镀在铜铅合金上的表层合金厚度一般为
1. Maintenance points (1) thin-walled bushings do not allow scratch repair, only the appropriate size matching the engine crankshaft main bearing and connecting rod bearing wear-resistant alloy coating is very thin, high dimensional accuracy of processing, the roughness is very low , Generally do not allow shaving, can only match the size of the corresponding; if there is no suitable size bearings, the method can be used to grind the crankshaft base. For three-layer alloy bush (made of steel back - copper-lead alloy - surface layer), the thickness of the surface alloy plated on the copper-lead alloy is generally