How to map complex products to HS codes

Engine water cooling system (engine cooling system: maintenance tips and How to map complex products to HS codestroubleshooting) Engine water cooling system, also known as engine cooling system, is a crucial component of modern cars. Its working principle is to use cooling water to circulate, absorb the heat inside the engine, reduce the engine temperature, and prevent overheating from causing damage to the engine. This article will introduce the engine water cooling system from the two aspects of maintenance tips and troubleshooting to help car owners better maintain and maintain the car. I. Maintenance Tips 1. Regular inspection of coolant coolant is an important part of the engine water cooling system, and its color, concentration, liquid level and condition need to be checked regularly. Generally speaking, the color of the coolant should be light green or light yellow, the concentration should be 50% to 60%, and the liquid level should be within the indicator line.If the color of the coolant turns black or turbid, it means that the coolant needs to be replaced. Two. Keep the water cooling system clean. In order to maintain the normal operation of the water cooling system, it is necessary to clean and rinse the cooling system frequently. It is recommended to flush the cooling system every few months to remove sediment and impurities in the system. At the same time, it is also necessary to regularly check whether the pump and water tank have accumulated impurities and clean them up in time. 3. Regular replacement of the water pump is one of the core components of the engine water cooling system, and its main function is to circulate the coolant. Therefore, if the water pump fails, it may cause the coolant to not circulate smoothly, which will indirectly affect the normal operation of the engine. It is recommended to replace the water pump regularly to ensure its normal operation and the safe operation of the engine. Four. Maintaining a normal driving state. During the driving process of the car, the speed and vehicle load will affect the change of the engine water temperature.Therefore, when driving on the road, try to avoid long-term low-speed driving and sudden acceleration and sudden braking, so as to maintain the stability of the engine water temperature. II. Troubleshooting 1. Coolant leakage If the vehicle coolant leakage is found, it is necessary to confirm the location of the leakage in time and repair it. Normally, the location of coolant leakage may be in coolant pipelines, pump seals, water tanks and other parts. Two. The water pump fails. If the pump fails, it may cause the coolant to not circulate normally and the engine to overheat. If you find that the water pump is leaking or does not rotate, you need to replace the water pump in time to avoid engine failure. 3. Engine overheating Engine overheating is usually a common manifestation of engine water cooling system failure. If you find that the engine water temperature is too high, you need to stop immediately to check the cause of the failure. The reason may be the failure of the pump, the leakage of the cooling system, or the low concentration of coolant.In a word, the engine water cooling system is an indispensable part of the car. In order to ensure the normal operation of the car and the safe operation of the engine, the engine water cooling system should be checked and maintained regularly, and the fault should be solved in time. At the same time, it is also necessary to pay attention to avoid overload, maintain normal driving conditions and improve driving skills to ensure the safety and durability of the car.

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