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我公司一台柳工产ZL50C装载机,在工作时水温升高快、散热不良,水温极易达到沸点,使机器不能长期正常工作 一般来说,造成水温升高的原因有:水泵泵体有故障,水泵流量小,水量不足;节温器失灵,冷却水无法正常循环;冷却系统常年使用硬水,造成水箱、发动机水道内水垢积聚过多,堵塞水道,使传热效率大大降低。根据上述故障原因,首先检查了皮带的松紧度和两只蜡质节温器,但均未发现问题。为检查水泵本身是否工作正常,打开发动机油底壳,将水泵取出并用塞尺测得水泵叶轮与壳体之间的间隙为2.031mm,证明此值在标准范围（1.905±0.254）mm
Our company a Liugong ZL50C loader, the water temperature rise fast at work, poor cooling, the water temperature can easily reach the boiling point, the machine can not work long-term In general, the reasons for the water temperature rise: pump Body failure, pump flow is small, insufficient water; thermostat failure, cooling water can not be normal circulation; cooling system perennial use of hard water, resulting in water tank, engine waterway scale accumulation too much, blocking the waterway, greatly reducing heat transfer efficiency. According to the above reasons, first check the belt tightness and two wax thermostat, but did not find any problems. To check that the pump itself is working properly, open the engine oil sump, remove the pump and measure the gap between the pump impeller and the housing with a feeler gauge to 2.031 mm, proving that this value is within the standard range (1.905 ± 0.254) mm