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吉尔—130型汽车在我们地区使用的数量不少,该车在使用的初期,曾多次发生冲毁缸垫的故障,经多次检测、分析、试验,我们认为冲毁缸垫的主要原因是: 1.缸盖螺栓拧紧扭矩偏低(按原厂规定:在0～25℃为7～9kgf·m)。尽管吉尔—130型汽车发动机在工作温度时,由于铝缸盖与缸盖螺栓膨胀不同会相对地自动增加紧固力,然而还不能确保密封。据有关资料提供的数据,当缸盖螺拴的总预紧力等于缸盖上最大气压力
Jill -130-type cars in our area a lot of use, the car in the early stages of use, there have been many times the breakdown of the cylinder head gasket failure, after repeated testing, analysis, testing, we think the main reason for crashing the cylinder head gasket YES: 1. The cylinder head bolt tightening torque is low (according to the original regulation: 7 ~ 9kgf · m at 0 ~ 25 ℃). Although the Jill-130 car engine at operating temperature, due to the expansion of the aluminum cylinder head and cylinder head bolt will automatically increase the relative fastening force, but still can not ensure the seal. According to the information provided by the data, when the total preload of the cylinder head bolt is equal to the maximum pressure on the cylinder head