I removed the pump, remove the 2 (or 4?) phillips heads and sealed the 2 surfaces with RTV sealant.
2 hours, and I took my time.
No leak for the last 6 months.
I have read of success stories fixing the pump if it is not working. Do a search.
Keep us posted.

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1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
609 Certified