This is a GM Metric Saginaw power steering pump from an '81 C-10. I think a couple billion were made, so SOMEONE has to know what this screw/bolt is/does on the back of the unit. Does it adjust pressure? How do you set it? Is it OK to zing it on and off with an impact wrench? I tried moderate pressure with a ratchet and stopped before I busted my knuckles!
03-17-2012 05:28 AM
Ayuh,.... That's just a mountin' stud.....
In some applications, it's the tensionin' stud...
03-17-2012 05:37 AM
LOL, x2. Yep, its a mounting stud.
03-18-2012 10:15 AM
Actually, it does two things. Yes, it's a mounting stud. It also holds the sheet metal reservoir to the cast pump body. You need to swap it from the old pump to the rebuilt one.