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一台柳工产ZL50D型装载机,出现行走故障。现象是挂前进各挡时,既不前进也不后退;挂空挡时,只能后退;倒挡正常。经过对油路、电路的分析,基本上确定两者匀无故障。由变速器工作原理可知:若变速器内部各挡密封圈使用几年均未更换,有可能损坏并造成活塞卡滞。设想如果变速器内部的倒挡缸活塞因密封圈卡死,导致倒挡摩擦片始终在起作用,则挂空挡、倒挡时机器就会后退;而挂前进挡时,相当于前进和后退同时作用,机器既不会前
A Liugong ZL50D-type loader, appeared walking fault. The phenomenon is hanging forward when the block, neither forward nor backward; hanging neutral, only back; reverse normal. After the oil circuit, the circuit analysis, basically make sure both are uniform. From the working principle of the transmission we can see: If the gearbox internal retaining ring used for several years are not replaced, may damage and cause piston jamming. Imagine if the reverse gear piston internal piston seal stuck, resulting in reverse friction plate is always in effect, then the gear, gear reverse will reverse; and linked to the forward gear, the equivalent of forward and backward at the same time The machine neither before