某些型号的柴油机曲轴前油封处的轴颈上,设置了1个可更换的耐磨套,一旦该套发生磨损,需将该套及油封一并更换。通常在更换曲轴前油封及耐磨套前,须首先拆卸安装在柴油机前端的所有附件,然后拆卸柴油机前端盖,最后拆卸耐磨套。拆卸耐磨套时,一般采用捶打敲击方法,该方法不仅效率低,还极易损伤轴颈。为此,笔者设计了1款曲 Some models of diesel crankshaft front oil seal at the journal, set up a replaceable wear sleeve, wear the sleeve, the sleeve and the oil seal to be replaced. Usually before replacing the crankshaft oil seal and wear sleeve, first remove all attachments installed on the front of the diesel engine, then remove the front cover of the diesel engine and finally remove the wear sleeve. Demolition wear sleeve, the general method of hammering percussion, the method is not only inefficient, but also easy to damage the journal. To this end, I designed a song