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农用运输车、拖拉机、汽车的传动系、制动系、转向系等工作正常时,驾驶员手握方向盘感到很轻松,有时可短暂松手,机车仍能直线行驶,机手也不会感到疲劳。如果上述系统发生某种故障,将直接反映到方向盘上,机手操纵方向盘会感到异常。另外,如机车有液压制动装置时,当液压制动系统出现制动失灵等故障时,可用脚感法快速诊断故障部位
When working properly, such as farm tractors, tractors, car powertrains, braking systems, steering systems, etc., the driver can feel relaxed while holding the steering wheel. Sometimes the driver can take off his hand briefly and the locomotive can still travel in a straight line without the driver feeling tired. If any of the above systems have a fault, they will be directly reflected on the steering wheel, and the steering wheel will be abnormal. In addition, if the locomotive has a hydraulic brake device, when the hydraulic brake system failure occurs such as brake failure, the foot can be used to quickly diagnose the fault site