气缸盖在使用中,会因生产质量、碰撞、变形等因素,致使缸盖出现裂纹。气缸盖一旦产生裂纹,会出现漏水、漏气、漏油和窜气等故障,直接影响发动机的正常运转,如果气缸盖上产生较大的破裂,还会导致缸盖报废。因此,必须重视缸盖的裂纹,一旦发现,应立即进行检修。 缸盖裂纹的检查方法有好几种,常用的有观察法、油浸法、水压试验法等。观察法主要是通过摸和看进行检查,但对于细小的裂纹是不易被检查出来,有时候还得借助油浸法找出气缸盖上凭肉眼看不到的裂纹。油浸法比较简便易行,操作时只要用煤油将有疑问的部位洗净,接着在上面均匀地撒上白粉,由于油的渗透作用,白粉层会 Cylinder head in use, due to production quality, collision, deformation and other factors, resulting in head cracks. Once the cylinder head cracks, there will be leakage, leakage, oil leakage and blow-gas and other failures, a direct impact on the normal operation of the engine, if the cylinder head has a larger rupture, will lead to the cylinder head scrapped. Therefore, we must pay attention to the crack head, once found, should be immediately overhaul. There are several ways to check the cylinder head crack, commonly used observation method, oil immersion method, hydrostatic test method. Observation is mainly through the touch and look at the inspection, but for small cracks is not easy to be checked out, and sometimes have to find out by oil immersion cylinder head with the naked eye can not see the crack. Oil immersion method is relatively simple and easy to operate, as long as the use of kerosene will be suspected parts of the wash, and then sprinkle evenly on the white powder, due to the infiltration of oil, white powder layer will