Found that the hydraulic system oil temperature is too high, should first check whether the hydraulic tank oil level is too low. If the oil level in the tank is too low, the flow rate of the hydraulic pump will be too small, and the system will not have enough flow rate to bring the heat generated by its work, which will lead to the increase of the oil temperature of the system. In addition, the oil quantity in the tank is less and the hydraulic system is too short of oil, which speeds up the circulation speed of the hydraulic oil in the system, and can not fully statically dissipate the oil, resulting in the increase of the oil temperature.
If it is found that the oil level of the hydraulic tank is too low, the same grade hydraulic oil should be added in time in strict accordance with the regulations. If the hydraulic oil is not mixed, the viscosity of the hydraulic oil will be too low or too high, and the system power loss will increase. Cause oil temperature to rise. If the viscosity is too low, the leakage increases and the oil temperature increases. Pay attention to oil filtration when refueling. The oil should be added to the tank through the oil filter. After refueling, the core of the oil filter should be cleaned and the new filter element should be replaced.