1、如果液压机油温过高，要查看压力控制阀的调定值是否偏高，如果过高，降低机器工作压力
2、待1000吨四柱液压机设备自然冷却后，打开放油螺塞，取油样。
3. Check the viscosity index of the oil. If the viscosity is too low, it will affect the pressure index of the small hydraulic press.
4. If the oil is obviously turbid and the hydraulic oil is mixed with water, it is recommended to replace it as soon as possible.
5. When replacing the hydraulic oil, be sure to release all the oil in the hydraulic system of the whole small hydraulic machine, including the hydraulic tank, and replace all the new oil. At the same time, ensure that the hydraulic oil shall not be less than 100kg each time.
6、由于液压机液压泵和它连接处的泄漏而发热时，要紧固各连接处，加强密封;
7. When the capacity of the hydraulic oil tank is too small and the heat dissipation condition is poor, the capacity of the oil tank should be increased and the cooling equipment should be installed;