How to Replace the Water Pump on a Jetta?

[Raquel]

The method for replacing the water pump on a Jetta is as follows: 1. Clean the pump shaft, and if necessary, lightly sand it with sandpaper. Wipe the pump shaft and static ring groove with a clean cloth, ensuring there are no debris or small particles. 2. Apply lubricant to the motor shaft and static ring groove. Wipe the new mechanical seal static ring with a clean cotton cloth, apply lubricant to the outer ring and end face of the static ring, then insert the static ring into the groove with the end face facing outward, ensuring it is flat. 3. Clean the moving ring, apply lubricant to the inner ring and end face, then gently rotate the moving ring to align it with the static ring end face, pressing the moving ring spring firmly. 4. Slide the impeller onto the pump shaft, place a small wooden block on the impeller, gently tap with a hammer to install the impeller in place, and tighten the impeller fixing screw. 5. Insert the motor and impeller into the pump body and adjust the impeller position as needed.