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1 制动底板与制动鼓摩擦一辆 JT662A 型大客车,其后轮保养不久,行驶中便出现“吱吱吱”的摩擦声。收车回场后,对车轮进行检查。在分析该故障原因时,开始大家都认为,制动鼓、制动蹄等刚卸下保养不久,且未换件,不会出现制动鼓与制动底板摩擦,怀疑是漏装某一零件所致。但承修作业人员却否认漏装零件,分解后也说明并未漏装。据承修人员回忆说,该车轮的轮毂及制动鼓总成装回半轴套管上,拧紧轮毂轴承调整螺母之后,制动鼓不能转动,同时,用扳动制动鼓检查有无径向间
1 Brake plate and brake drum friction A JT662A bus, the rear wheel maintenance soon, there will be driving “squeaky” friction sound. After returning to the car, check the wheels. In the analysis of the cause of the malfunction, we all began to believe that brake drums, brake shoes, etc. just unloaded shortly after maintenance, and did not change parts, there will be no friction brake drum and the brake floor, suspected to be missing a zero Due to pieces However, the repair workers denied missing parts, decomposition also shows that no missing. According to the repair staff recalled that the wheel hub and brake drum assembly installed on the half-shaft sleeve, tighten the hub bearing adjustment nut, the brake drum can not rotate at the same time, with the brake drum to check whether the diameter To the room