故障现象一辆中国重汽ZZ3311M4261W金王子自卸车,装配法士特9JS119变速器,在厂区内倒运生产原料,累计行驶里程约为6万km。据驾驶人反映,该车最近出现挂挡困难的故障现象,冷机时换挡需双手用力扳动换挡操纵杆才能挂入挡位,当车辆运行升温后,挂挡虽比冷机时用力小,但挂挡仍不顺畅,而且变速器内有明显的齿轮撞击声。故障诊断接车后首先试车,确认故障现象属实。该车换挡操纵采用双H双杆操纵机构和软轴操纵系统,换挡软 Symptom A Chinese Sinotruk ZZ3311M4261W Au Prince dump truck, assembled Fast 9JS119 transmission, in the plant reverse production of raw materials, the cumulative mileage of about 60,000 km. According to the driver reflects the car recently appeared to block difficult failure phenomenon, the cold when the need to shift both hands hard to shift the shift lever can be linked to the gear, when the vehicle is running warmed up, although hanging than the cold when the force Small, but the gear is still not smooth, and the gearbox has a significant impact gear. Troubleshooting After the first test car, confirm the fault phenomenon is true. The car shift control using double H double rod control mechanism and flexible shaft control system, shift soft