Learning

just replaced the power steering pump and lines ,when I was cleaning up, I found a small mushroom shaped orfice lying on bench.it has about a 1/4 " stem with an o-ring with a chamfered hole and a rounded 3/8 "top with a slightly worn surface with a very small hole thru center ,
never noticed it from any of the fittings or reservoir, and cant find anyplace that looks like it would fit
unfortunately ,my son had just removed an engine from a Subaru and I'm not sure it was from his job .
only problem after install was i cant get the air bled out and pump is very noisy
anyone have any ideas on what this part may be or if it belongs in this steering circuit ?

4.3L XJ

So my first question is what oil are you using in the system now?

Learning

prestone power steering fluid ,
states 50,000 mile conventional oil for all manufactures
does not state viscosities or type

4.3L XJ

The reason I asked is that if you are getting air into the oil, it has to have a source, unless the oil does not have antifoam stuff in like say tractor hydraulic fluid. I tried to find pics of the components, but could not for the saginaw pump. However I vaguely remember that there is an orifice under the fitting for the high pressure hose. You might see if it will fit there after you pull that fitting out of the pump housing

Learning

thanks for your efforts ,I too looked for a break down of components to no avail , just have not found a good location for part , I will look under pressure line this weekend .

Learning

installed complete new pump and reservoir ,bled it the same with same oil ,zero issues quiet as a church mouse
getting tired of new junk parts .
thanks for your input