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在车辆维修过程中,经常会遇到制动鼓发烫,制动不灵的故障,造成上述故障的原因有:制动鼓圆度过大;制动蹄摩擦片与制动鼓间隙调整偏小;制动蹄和制动凸轮轴、套等锈蚀不能回位或回位偏慢;制动主缸、轮缸或快放阀等工作不正常,导致制动蹄摩擦片和制动鼓间长时间不正常摩擦,制动鼓发烫,制动蹄摩擦片和制动鼓接触表面因受高温影响而产生硬化层,使摩擦因数相应降低,制动效能下降等。在排除该类故障时,修理人员通常针对性地搪削
In the vehicle maintenance process, often encounter brake drum hot, brake failure, resulting in the failure of the reasons are: brake drum roundness is too large; brake shoe friction plate and brake drum clearance adjustment Small; Brake shoes and brake camshafts, sleeve and other rust can not return or return to the slow; brake master cylinder, wheel cylinder or quick release valve and other work is not normal, leading to brake shoe friction between brake pads and drum Prolonged abnormal friction, brake drum hot, brake shoe friction surface and brake drum contact surface due to the impact of high temperature hardened layer, so that the corresponding reduction in friction coefficient, braking performance decline. In troubleshooting this type of failure, repair personnel are usually targeted