The Reasons for The Increase in Oil Temperature in The Custom Hydraulic System Measures to ensure the normal operating temperature of the customized hydraulic system: 1. When the set value of the pressure control valve is too high, the working pressure should be reduced to minimize energy loss. 2. When the hydraulic pump and its connection points leak, causing volume loss and resulting in heat generation, the connections should be tightened and the seals strengthened. 3. When the fuel tank volume is small and the heat dissipation conditions are poor, the fuel tank volume should be appropriately increased. In cases where necessary, a cooler should be installed.