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1台W4-60型挖掘机,其发动机预热启动后,使用脚制动时,有液体从快速放气阀喷出,连续踏几次脚制动踏板,液体喷出现象消失。快速放气阀的功能是:当松开脚制动踏板时,制动气缸内具有压力的气体就会迅速排入大气,达到快速解除制动的目的。W4-60型挖掘机配置的是气压式单管路制动系统,出现此故障有3种可能:一是空气压缩机、气体控制阀等部件出现故障,有机油
A W4-60 excavator, the engine warm start, the use of foot brake, there is liquid from the rapid release valve spit out, continuous foot tread pedal pedal several times, the phenomenon of liquid spray disappears. Rapid deflation valve function is: When the foot brake pedal is released, the brake cylinder pressure gas will be quickly discharged into the atmosphere, to quickly lift the purpose of the brake. W4-60 excavator is equipped with pneumatic single-pipe braking system, there are three possible occurrence of this failure: First, air compressors, gas control valves and other components failure, organic oil