l Keep radiators and water jackets clean The outside of the radiator is stained with dirt, oil, or the heat sink bends due to collision. This will affect the air circulation and increase the temperature of the cooling water. Clean and repair radiators in time. The cooling water is not clean, the more impurities are contained, the more scale is deposited, the heat-conducting capacity of the radiator is reduced, and the engine water temperature is increased. Therefore, don't add river water, pump water, etc., add clean soft water with less mineral content, and don't always change the cooling water to prevent abnormal engine water temperature. In order to ensure the heat dissipation effect, when the water jacket and the radiator are excessively fouled, chemical solvents should be used for timely cleaning. 2 Keep the amount of cooling water sufficient When the amount of cooling water is insufficient, it is easy to cause the engine to “panâ€. In this way, it will not only affect the normal operation of the engine, but also cause a large amount of cooling water to evaporate, so that water is often added and the scale of the cooling system increases. The main reason for the lack of cooling water is leakage (radiator, water pump, soft hose interface, etc.), followed by poor sealing of the radiator cover, or the opening pressure of the outlet valve is reduced, resulting in lower boiling point of the cooling water and gasification, increasing water consumption . The lower the outlet valve opening pressure, the greater the water consumption. To prevent cooling water from leaking and evaporating, always tighten and inspect the interfaces. In addition, when the orifice of the thermostat cap valve is blocked, the cooling water will not easily enter the water jacket, and the amount of cooling water will also be insufficient. At this point, the cap-shaped valve orifice can be slightly enlarged so that the water can fill the water jacket smoothly. 3 The cooling system must maintain the tension of the normal operation of the various components of the fan belt tension requirements, the fan blade collision deformation, should be repaired and restored in time, to maintain the integrity of the wind protection ring, so that concentrated air flow, improve cooling effect. The role of thermostat is to automatically control the engine operating temperature. Tests have proved that when the thermostat works normally, when the engine speed is 1000r/min, the cooling water in the water jacket is heated from 8-10cC to 58°C, which takes 6rnin. Without a thermostat, it takes 30 minutes. Therefore, we must pay attention to the working condition of the thermostat at ordinary times and find that the fault is eliminated in time. 4 The correct use of thermal insulation device shutters is the main thermal insulation device of the engine. Some drivers believe that when the temperature reaches 80°C, the blinds should be opened and timely dissipated. This is not correct. To prevent the cooling water temperature from being too low, it must be correct. The use of thermal insulation devices should be used at any time during the driving process to adjust the water temperature using blinds to ensure that the engine is often operated at normal water temperatures to extend its service life.
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