Hyd Fluid Leak Puzzle

[Bernie Benz]

> From: Steve Sherman <spsherm at attglobal.net>
> Date: Thu, 21 Aug 2003 13:31:41 -0600
> To: 20v <200q20v at audifans.com>
> Cc: DAK <dak at rochester.rr.com>
> Subject: Re: Hyd Fluid Leak Puzzle
>
> Thanks to DAK and Bernie for the suggestions on the rack hose leak.  I
> tried that but it did not appear to be the problem.
>
> I did today notice a slight fluid leak on the bomb, the first since the
> last major dump and subsequent cleanup.  It appears to be coming from
> around the banjo bolt on the bottom, the one on the hose that goes to
> the pump.  In checking for "wet" spots up the hose and elsewhere on the
> body of the bomb, it would appear that the leak is coming from the banjo
> bolt connection itself.  There is no signs of oil further up on that
> line to hint that it is dripping from up there down. (BTW, the banjo
> bolt is tight, no looseness here)
>
> When I took a closer look at this banjo bolt, I could not see the Cu/Al
> crush washers under the head or under the hub.  I (vaguely) recall
> changing this same line out in my 86 5K, and in that case there were two
> crush washers one on either side of the hub the bolt goes thru.  But on
> my 20v, the head of the bolt appears to contact the hub of the line.
> Could it be that the wrench that installed the new bomb for the previous
> owner forgot the washers???
These Audi years were transition years from washers to o-rings, the former
externally visable, the latter not.  I defer to the experts as to whare your
bild date may fit.
>
> I'd appreciate it if anyone who has seen these parts recently could
> comment on if this fitting is supposed to have crush washers, and if
> they are visible from the outside when installed.
>
> TIA