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我公司2000年10月购进的一台长江起重机厂QY20A型汽车起重机,仅使用了半年多,主机 6135Q-2d柴油机的气门摇臂处就开始出现撞击异响,且响声逐渐加大。 拆检时发现,气门间隙过大,第V缸尤为严重(达2 mm左右)。调整后异响消失,但使用几天后又出现同
My company purchased in October 2000 a crane factory in the Yangtze QY20A crane, only used more than six months, the main engine 6135Q-2d diesel engine began to appear at the valve rocker impact noise, and gradually increased the sound. Disassembly found that the valve clearance is too large, V-cylinder is particularly serious (up to 2 mm or so). Allergenic disappeared after adjustment, but after a few days with the same appearance