测量叉车液压系统某些点的液体压力、流量及温度等参数，可逐个测出系统中液压泵、液压阀及液压缸等元件的内泄漏量，并对某些压力控制阀进行调压检测，从而实现液压系统的故障诊断及状态监测。文章以产品作实例，介绍具体检测程序和方法。 Measuring the liquid pressure, the flow rate and the temperature at some points of the hydraulic system of the forklift truck, the internal leakage of the hydraulic pump, the hydraulic valve and the hydraulic cylinder in the system can be measured one by one, and some of the pressure control valves can be pressure- In order to achieve the hydraulic system fault diagnosis and condition monitoring. The article takes the product as an example, introduces the specific testing procedures and methods.