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What is the principle of the Toyota Vios water pump?

1 Answers

Reagan

07/29/25 9:21pm

The principle of the Toyota Vios water pump is: The engine drives the water pump bearing and impeller to rotate through the pulley. The coolant in the water pump is driven by the impeller to rotate together, and under the action of centrifugal force, it is thrown to the edge of the water pump housing, generating a certain pressure, and then flows out from the outlet channel or water pipe. The repair method for water pump leakage is as follows: 1. Remove the water pump: Loosen the generator belt, remove the four screws around the water pump, and pry it open with a flat-head screwdriver. 2. Disassemble the water pump: Use a special tool to first remove the water pump bearing, then remove the impeller and sealing assembly from the bearing. 3. Replace the sealing ring, new gasket, new V-belt, and new pulley. 4. Assembly: Use a special tool to first press the bearing onto the impeller, then press the impeller and sealing assembly into the specified position, and press the bearing onto the pulley seat. During operation, the bearing end face should be pressed flush with the housing, ensuring the impeller plane is 0.1-0.3mm lower than the pump housing plane. 5. Inspection: The assembled water pump should have a shaft that can rotate flexibly, and the bearing should have no noticeable radial clearance. 6. Fill with new antifreeze.

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