Must the Passat water pump be replaced if it leaks coolant?

[VanAngelina]

Passat water pump leaking coolant can be replaced. Insufficient lubrication on the sealing surface of the water pump causes dry friction or scratches on the sealing surface, leading to water pump leakage; excessive axial movement of the water pump rotor and excessive interference between the auxiliary seal and the shaft prevent the moving ring from moving flexibly on the shaft. When the pump rotates, wear on the static and moving rings results in uncompensated displacement, causing leakage. Coolant: The full name of coolant should be antifreeze coolant, meaning it has antifreeze properties. Coolant prevents the freezing of the liquid in cold winter conditions, which could otherwise crack the radiator and damage the engine cylinder block or head. Car water pump: