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ChineseRepair of water seal and seat: If the water seal is worn and grooved, it can be smoothed with emery cloth. If it is worn out, it should be replaced; if the water seal seat is rough or scratched, it can be repaired with a flat reamer or on a lathe. The water seal assembly should be replaced with a new one during overhaul. Welding repair is allowed when the pump body has the following damages: the length is less than 30mm and does not extend to the cracks of the bearing seat hole; the flange joint with the cylinder head has a broken part; the oil seal seat hole is damaged.
The bending of the automobile water pump shaft must not exceed 0.05mm, otherwise it should be replaced. Damaged impeller blades should be replaced. The car water pump shaft bore is severely worn and should be replaced or repaired. Check whether the bearing of the automobile water pump rotates flexibly or has abnormal noise. If there is a problem with the bearing, it should be replaced.
After the automobile water pump is assembled, turn it by hand, the pump shaft should be free from jamming, and the impeller and pump casing should be free from rubbing. Then check the displacement of the car's water pump. If there is any problem, check the cause and eliminate it. If the car's water pump fails, the coolant will not be able to reach the corresponding place, and its performance will not be effective. Z will eventually affect the working condition of the engine.
The automobile water pump is one of the important components of the automobile engine cooling system. The function of the automobile water pump is to pressurize the coolant to ensure its circulation in the cooling system and accelerate the heat dissipation. As a long-running device, the car water pump will fail during use. How to check and repair these failures?
Check the pump body and pulley for wear and damage, and replace them if necessary. Check whether the automobile water pump shaft is bent, the degree of shaft neck wear, and whether the thread of the shaft end is damaged. Check whether the blades on the impeller are broken, and whether the shaft hole is severely worn. Check the degree of wear of the water seal and bakelite gasket, and replace with new ones if it exceeds the service limit. Check the wear of the bearing. Use the meter to measure the bearing clearance. If it exceeds 0.10mm, replace the bearing with a new one.
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