I can simplify that farther for you.
The part number is usually on the side facing out.
This of course isn't true with wheel cylinder cups or O ring type seals.

Stan Wilder

On Sun, 09 Jun 2002 15:58:41 -0700 "Thomas D. Hanlon"
<hanran@earthlink.net> writes:
>
>
> "Thomas D. Hanlon" wrote:
>
> > Jeremy,
> >
> > See my post of this morning, entitled, "Addendum to OOPS,
> Transmission
> > Leaking after clutch kit installation."
> >
> > I "think" I may have installed the transmission main shaft seal
> in
> > backwards, or I have damaged the seal in some way, or there is a
> > misalignment. Any, or all of these conditions will cause a leak
> of
> > transmission oil., I understand. I'll repull the transmission in
> the
> > morning.
> >
> > Stan Wilder has a post to the List today or yesterday about "the
> tapered
> > side of "a" seal facing the source of lubrication," or similar
> words, in
> > regard to brake cylinder seals. I'm still looking for it to
> determine if the
> > "rule" applies to transmission main shaft seals. Look for it and
> ask the
> > tech to consider if he may have installed the transmission main
> shaft seal
> > in the right direction, or damaged the seal, or if there is a
> misalignment..
> > I've asked myself all these questions, since I am the "neophyte
> driveway
> > mechanic." Be wary of my analyses, however, which are those of the
> amateur.
> >
> > Please let me know what your mechanic's replies were to the three
> > conjectures. I'll let you know of my findings.
> >
> > We may generate responses to our posts from other Listees.  Let me
> know if
> > you get any which cast different light on the topic.
> >
> > Thank you.
> >
> > Tom Hanlon
> > Palm Springs, CA
> > 84 Westfalia
> >
> > Jeremy Speer wrote:
> >
> > > Folks,
> > >
> > > So, i just had a new LUK clutch kit installed along with the
> pilot
> > > bearing and throw-out bearing.
> > >
> > > HOLY Cow! It's like i got a new van in the deal! My pilot
> bearing was
> > > SHOT... and all the seals were leaking. Also, my flywheel had a
> visible
> > > crack in it! There's not a hint of bearing noise anymore... and
> shifting
> > > is effortless. In fact, the engine is actually hard to hear at
> highway
> > > speeds.
> > >
> > > Now the bad news, my van never dripped a single drop of oil when
> parked.
> > > My father used to say VW's liked to "mark their turf." Not mine.
> Not, at
> > > least, until now.
> > >
> > > As best i can tell oil is seeping from right where the engine
> and
> > > transmission mate up. There is a triangular piece of metal the
> crossing
> > > exhaust pipe is attached to... the bottom of that piece of metal
> is
> > > dripping wet with oil. It stops dripping after i park for a few
> > > moments... and there does not seem to be any oil residue on the
> back
> > > hatch even after a few hours of highway driving.
> > >
> > > So... what did the shop guys forget? I'm taking the van back to
> the shop
> > > tomorrow, but i'm curious where all this dripping is really
> coming from.
> > >
> > > Opinions?
> > >
> > > Thanks,
> > >
> > > -jspeer
> > >
> > > '89 Westy, "Mystery Machine"
>
>
>

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