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一忌安装气缸垫涂黄油有些机工安装缸垫时涂上黄油,企图增加气缸的密封性,其实适得其反。当涂了黄油遇高温后,部分黄油流失,缸盖、缸垫与机体平面之间产生缝隙,高温高压燃气易从此处冲出,冲坏缸垫,造成漏气。另外,由于黄油遇高温后,产生积炭,缸垫老化变质,增加下次拆卸困难.二忌安装活塞销时用明火加温活塞由于活塞明火加温,容易引起变形,原因是活塞各部分厚薄不匀,活塞销座处最厚,因此各处热胀冷缩度不一,极易变形。还有用明火加温活塞,一般温度较高,自然冷却后里边金相组织遭到破坏,降低它的耐磨性,缩短其使用寿命。
Avoid to install the cylinder pad grease butter Some mechanic install the cylinder pad coated with butter, in an attempt to increase the cylinder seal, in fact, the opposite. When the butter coated with high temperature, part of the loss of butter, cylinder head, cylinder pad and the plane between the plane gap, high temperature and pressure gas easily washed out here, flushed cylinder pad, resulting in leaks. In addition, due to the high temperature butter occurs, resulting in coke, cylinder mat deterioration, increase the next disassembly difficult .Even when the piston pin is used to heat the piston to heat the piston as the open flame heating easily lead to deformation, the reason is the thickness of each part of the piston Uneven, the pinion piston seat at the thickest, so various degrees of thermal expansion and contraction, easily deformed. There are also open flame heating piston, the general high temperature, natural cooling inside the microstructure was destroyed, reducing its wear resistance and shorten its service life.