Automobile water pump assembly four-hole pulley function
The main function of the four-hole belt wheel of the automobile water pump assembly is to drive the coolant circulation and ensure that the engine works at a suitable temperature.
Automobile water pump assembly four-hole pulley is an important part of the engine cooling system, its specific functions include:
drive coolant circulation : The pump assembly rotates to push the coolant to flow in the channel of the engine, ensuring that the coolant can circulate between the engine and the radiator, taking away the heat generated by the engine and preventing the engine from overheating .
Maintain the normal working temperature of the engine : by circulating the coolant, the water pump assembly helps to maintain the normal working temperature of the engine, improve the combustion efficiency and emission performance, and extend the engine life .
Reduce air resistance and ensure coolant flow : the pump assembly can reduce the internal air resistance of the water jacket, provide enough coolant flow and pressure to ensure the normal operation of the cooling system, especially for the long time and high load operation of the engine .
In addition, the construction and components of the pump assembly include:
pump body : responsible for pumping and circulating coolant main parts, usually by the pump shell, impeller and bearing composed of .
motor : power source used to drive the operation of the water pump body, usually driven by the automobile engine through the transmission belt .
bearing : parts that support the pump rotor to ensure smooth operation of the pump .
seal : an important part to prevent coolant leakage and ensure the normal operation of the pump .
fan : drive the water pump through the transmission belt, increase the cooling effect .
transmission belt : connecting the engine and the pump parts, transfer power to make the pump run .
The common faults and causes of the four-hole belt wheel of the automobile water pump assembly mainly include the following:
water leakage : cracks in the pump shell or poor water seal may cause water leakage. When the pump shell cracks are light, it can be repaired by bonding method, and it needs to be replaced when it is serious. If the water seal is not properly sealed, decompose the water pump to check, clean or replace the water seal .
loose bearing : bearing wear or poor lubrication will lead to loose bearings, which is manifested as abnormal sound of the water pump bearing or unbalanced rotation of the pulley when the engine is idling. Check the bearing clearance, more than 0.10mm should be replaced with a new bearing .
insufficient pump water : water channel blockage, impeller and shaft slip, water leakage or transmission belt slip will lead to insufficient pump water. The fault can be removed by dredging the water channel, reinstalling the impeller, replacing the water seal and adjusting the tightness of the transmission belt .
pulley failure : friction or wear between the pulley and the belt will cause the belt to slip or break, affecting the normal operation of the pump. Check belt wear and replace with new belt if necessary .
Testing and maintenance methods :
Check pump body and pulley : Check pump body and pulley for wear and damage, replace if necessary. Check whether the pump shaft is bent, the shaft journal is worn, and the shaft end thread is damaged .
Check the impeller and bearing : check whether the blade on the impeller is broken, shaft hole wear condition, check the bearing wear condition, beyond the use limit should be replaced with a new part .
Adjust belt tightness : Check the tightness of the transmission belt and adjust or replace the new belt if necessary .
Replace seals and bearings : replace aging seals and worn bearings to ensure the normal operation of the pump .
Preventive measures :
Regular inspection and maintenance : Check all parts of the pump regularly to ensure that they are in good condition.
Replacement of aging parts : timely replacement of aging seals and worn bearings to prevent leakage and loosening.
Keep the coolant clean : Keep the coolant clean to prevent impurities from clogging the channel or damaging the impeller.
reasonable use of grease : reasonable use of grease to prevent bearing damage due to poor lubrication .
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