1990 740GL: Air-bound Power Steering pump??

Hello,

My power steering started to die at low RPMs, so I tried changing the
fluid. Didn't help. So, I got a used pump at a junkyard, and
installed it.

This pump doesn't seem to work at all (my old pump was pushing fluid
very well when I replaced the fluid).

Before I return this pump to the junk yard as dead, I want to make
sure that there isn't any way the pump could become "air bound." In
other words, I'm wondering if this pump is ok, but there is so much
air in the system that it can't push any fluid. Is there a way to
bleed the system and get some fluid into this dry pump? Or should a
working pump take care of this automatically?

Thanks,
Jay R.

 

I am not sure about Volvo but on other cars I have read that you are
supposed to jack the front tires off the ground and turn from lock to
lock half a dozen times with no load on the system. Good luck.
Chris V

 

Problem resolved. I installed a bad junkyard pump initially.
Replacement worked fine and sucked down nearly a quart of ATF.

Jay R.