86 4kcsq vacuum pump

[quk@sievers.com (Phil Payne)]

In message <863453065@triad1.com> rwoods@triad1.com (Ron Woods) writes:

> As a matter of fact, there are only TWO nuts holding this pump onto the head
> near the front opposite the intake side. Turns out, once you remove the two
> nuts, the entire pump will come right off. Actually the push rod inside had
> enough pressure on it that it pushed the pump off as I removed the nuts. There
> is a rubber o-ring seal recessed into the pump, which I did not have a new one.

Fascinating.  It sounds very much like this pump is mounted using the fittings 
originally cast into the head for the fuel pump in the early carburretor 
models.

This fuel pump was secured by two large Allen screws.  The O-ring went into 
a recess in the pump - not circular, but a kind of 
 
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A long lever protruded from the pump and rested on the underside of the cam.  I 
wonder if the same lobe is used to drive your vacuum pumps?

As for ticking - the old fuel pump was a _horror_ for it.  You could reduce the 
problem by loosening the screws, exerting upward pressure on the pump, and 
retightening the screws.  But it started again within a month.
 
--
 Phil Payne
 phil@sievers.com
 Committee Member, UK Audi [ur-]quattro Owners Club