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更换顶置式配气机构的摇臂轴时,只是正确地将摇臂、摇臂弹簧、垫片及开口销等机件装于摇臂轴上是不够的,还要注意下面两个问题,一是摇臂轴上的定位孔偏位使轴有前后端之分,安装时摇臂轴前后两端不可颠倒。二是拧紧支座固定螺母的扭力必须符合要求,否则,易造成配气机构机件的不正常磨损,引起配气机构出现异响,甚至造成摇臂轴折断等不良后果。 在BJ492Q型汽车发动机的检查维修
When replacing the rocker arm shaft of the top-mounted gas distribution mechanism, it is not enough to attach the rocker arm, rocker arm spring, washer and cotter to the rocker shaft correctly. Also pay attention to the following two problems, one Is the rocker shaft positioning hole offset so that the shaft has the front and rear ends of the points, the installation of rocker shaft front and rear ends can not be reversed. Second, tighten the support nut torque must meet the requirements, otherwise easily lead to abnormal wear and tear of the valve mechanism parts, causing abnormal sound institutions, and even cause rocker shaft broken off and other adverse consequences. In the BJ492Q car engine inspection and maintenance