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我队有台柳州产的ZL40装载机。当动臂提升到任何位置，且动臂与转斗操纵杆处在中位时，空载铲斗会自动前倾，重载铲斗前倾加快。这给物料的装车带来不便，每次在物料装车过程中都得扳动几次转斗操纵杆使铲斗后顺，否则还未等物料运上车就落地了。1．故障原因分析造成这种故障的
I have a team of Liuzhou ZL40 loaders. When the boom is raised to any position with the boom and bucket lever in the neutral position, the empty bucket automatically tilts forward and the heavy bucket forwards faster. This brings inconvenience to the loading of the material. Each time the loading process of the material has to be pulled several times, the dipper joystick is used to make the dipper smoothly. Otherwise, the material is not loaded onto the car and landed. 1. Analysis of the causes of such failure caused by failure