There have been a few power steering pump questions lately.
I've heard responders mention a power steering pump vacuum leak test to identify where air is getting into the power steering fluid system.
I've turned that over in my head quite a few times and am wondering how such a test would be performed.
What is the procedure to perform a power steering vacuum leak test?
Is there more than one way to skin this cat?
Edit: Add on questions
What is the tool used to create the vacuum?
Is it like a might-vac or something?