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一台ZL50C型装载机,当铲斗升到顶,不放松换向阀操作手柄时,卸荷阀的阀盖与阀体的接合处向外喷油,喷出的油成薄雾状。铲斗下降时却无喷油现象。
A ZL50C-type loader, when the bucket rose to the top, do not relax the valve handle when the unloading valve bonnet and valve body outward joint injection, the spray of oil mist. When the bucket drops there is no fuel injection phenomenon.