PS Pump.. rebuilds crap???

[Kneale Brownson]

At 12:22 AM 08/24/2000 +0000, quk at isham-research.freeserve.co.uk wrote:


> > << PS pump is leaking at the seams (a lot!) and I am leary about
> >  rebuilding it based on comments I've seen on the list.  Might be a waste
> >  of time.   >>
>
> > must have missed this.   are rebuilt ps pumps crap?
>
>No, not necessarily.  But it may be (in the older systems) that the
>pressure regulator (under the bomb) is the real culprit - not the pump.
>
>I've just been looking at a WR ur-quattro that's gone through three
>pumps in 3,500 miles.  I think the problem isn't the pump - I think
>the pressure regulator isn't opening a valve when it should and the
>'back pressure' up to the pump is destroying them.  There's no
>pressure regulation in the pump itself - it's all external.
>
>What happens to the pump if the external system backs pressure up?
>
>--
>  Phil Payne

Is this the source of Audi's famous belt squealing?

I thought there was a one-way valve into the "bomb"????