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一台WA470-3型装载机启动后不能行走或行驶速度低、推进功率小,尤其在坡面上功率更显不足。分析故障原因可能是:液压浊油位过低、过高或进油管漏气、油液黏度指标选用不当;散热片表面沉积污垢、风扇转速过低或散热器、油管堵塞;系统压力调整不当、液压泵磨损或变速器内漏,使系统压力不足;变速器零件损坏;连续超负荷运行。
A WA470-3 loader can not walk or drive at a low speed after start-up, and the propulsion power is small, especially when the power is more insufficient on the slope. Analysis of the cause of the malfunction may be: hydraulic turbid oil bit is too low, too high or into the tubing leakage, improper selection of oil viscosity indicators; fouling sink surface deposition, fan speed is too low or radiator, tubing plug; system pressure adjustment is not appropriate, Hydraulic pump wear or transmission leakage, the system pressure is not enough; transmission parts damaged; continuous overload operation.