拆曲轴正时齿轮的两种工具在维修 S195柴油机中,曲轴正时齿轮的拆卸普遍感到很困难。这是因为:曲轴正时齿轮的孔与曲轴外径的配合是采用静配合,装配时先将正时齿轮内孔加热,使孔膨胀后套进曲轴上,冷却后就很紧地固定在曲轴上;二是由于曲轴主轴颈的直径大于曲轴正时齿轮的外径,使拆卸时无法敲打齿轮的里端面;三是由于曲轴正时齿轮的里端面与主轴颈的端面之间装配后一般只有1.5毫米的缝隙,有的没有缝隙,采用一 Two tools to disassemble crankshaft timing gear In the maintenance of S195 diesel engine, crankshaft timing gear disassembly generally felt very difficult. This is because: Crankshaft timing gear hole and the outer diameter of the crankshaft is the use of static fit, the first gear assembly when the hole heating, the hole after the expansion into the crankshaft, cooling is very tight on the crankshaft The second is due to the diameter of the crankshaft main journal larger than the outer diameter of the crankshaft timing gear so that the demolition can not beat the gear in the end face; third is due to the crankshaft timing gear in the end face of the main journal assembly between the general only 1.5 mm gap, some without gaps, using one