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变速器轴承异响的原因

2016-09-20

　　柴油汽车在行驶中变速器除直接挡外，其余各挡都有不同程度的异响。从变速器的结构分析看，柴油发动机的动力由变速器第1轴输入，经中间轴常啮合齿轮传至中间轴，通过第2轴上的滑动齿轮（齿套）移动挂上所需挡位，由第2轴输出。该变速器在直接挡时异响较小，因为直接变速器内第1轴、第2轴经滑动齿套连成一体，动力由第2轴直接输出，所以异响来自于第2轴前轴承。原因主要是变速器齿轮油数量不足、较脏或第1轴常啮合主动齿轮上的两通孔被污物堵塞，故造成第2轴轴承润滑不良，而使轴承烧蚀，造成变速器轴发出异响。

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