[A4] Clutch Woes - Round 3

Mon Jun 23 11:36:48 PDT 2008

On my 1994 90S (B4) I had the pressure up to 15-20 psi without trouble. It
didn't do much for bleeding the brakes. I still had to pump the pedal. But
it was great for the clutch.

Obviously, the reservoir is different between the B4 and what you have so
your mileage will vary.

Tom

On Mon, Jun 23, 2008 at 10:02 AM, Richard Hurt <rnhurt at gmail.com> wrote:

> So nobody has done this before at the "recommended" 30PSI?  Does the
> reservoir actually hold up at that pressure!?  Maybe I need to check that
> cesspit that is the Audi World Forums.  :(
>
> Later...
>  Richard
>
> On Mon, Jun 23, 2008 at 12:27 PM, Tom Christiansen <tomchr at gmail.com>
> wrote:
>
> > No, but a popped reservoir will...
> >
> > Tom
> >
> > On Mon, Jun 23, 2008 at 1:03 AM, Richard Andrews <
> > richard.j.andrews at gmail.com> wrote:
> >
> > > agreed but the slave wont put brake fluid anywhere need the paint,
> > >
> > > On Mon, Jun 23, 2008 at 1:33 AM, Tom Christiansen <tomchr at gmail.com>
> > > wrote:
> > >
> > >> Careful with that... Hydraulic fluid is supposedly really good for
> > >> stripping
> > >> paint. You really don't want to test that hypothesis on the paint job
> of
> > >> your car.
> > >>
> > >> Tom
> > >>
> > >> On Sun, Jun 22, 2008 at 4:46 PM, Richard Hurt <rnhurt at gmail.com>
> wrote:
> > >>
> > >> > OK,
> > >> >
> > >> > I have my power bleeder built (yea!) and have given it a test run
> > >> without
> > >> > much success (boo!).  I had a few small leaks which I've (hopefully)
> > >> fixed
> > >> > and now I'm must waiting for the stuff to dry.  I do have a couple
> of
> > >> > questions about the procedure though.  I used 10PSI just for a test
> > and
> > >> the
> > >> > reservoir enlarged quite a bit under the pressure.  Is this normal?
> > >>  What
> > >> > happens when you pump it up to the recommended 30PSI?  Will it
> hold!?
> > >> >  Also,
> > >> > I didn't get any fluid out of the slave at all.  I know its a low
> > >> pressure
> > >> > but I thought I might see something come out.  Do I have to pump the
> > >> pedal
> > >> > when pressure bleeding?
> > >> >
> > >> > Thanx!
> > >> >  Richard
> > >> > *
> > >> > Man, I don't want to blow up my reservoir...  That would suck!!!*
> > >> >
> > >> > On Thu, Jun 5, 2008 at 11:49 PM, richard valasek <rrv53 at comcast.net
> >
> > >> > wrote:
> > >> >
> > >> > > Richard: You definitely need to power bleed the system--nothing
> esle
> > >> will
> > >> > > work--believe me I tried with ruined parts as a result.
> > >> > > Richard
> > >> > > 98 A$ 1.8tq
> > >> > >
> > >> > > ----- Original Message ----- From: "Richard Hurt" <
> rnhurt at gmail.com
> > >
> > >> > > To: "Nicholas Stock" <nickstock at gmail.com>
> > >> > > Cc: "A4 Mailing List" <a4 at audifans.com>
> > >> > > Sent: Tuesday, June 03, 2008 7:30 PM
> > >> > > Subject: Re: [A4] Clutch Woes - Round 2
> > >> > >
> > >> > >
> > >> > >
> > >> > >  Thanks for the feedback.  I can confirm that there is no nipple
> on
> > >> the
> > >> > >> master cylinder as I just replaced it and have the old one to
> > >> reference.
> > >> > >> Bleeding from the slave nipple is what the Bentley recommends,
> > >> however
> > >> > it
> > >> > >> says to use the Audi power bleeder pumped up to 32 psi and open
> the
> > >> > slave
> > >> > >> nipple and let 100cc of fluid out.  Almost all of my past
> vehicles
> > >> have
> > >> > >> recommended the pressure bleeder but none of them has required
> it.
> >  I
> > >> > have
> > >> > >> always been able to manual method it - until now.
> > >> > >>
> > >> > >> Thanx!
> > >> > >>  Richard
> > >> > >>
> > >> > >> On Tue, Jun 3, 2008 at 10:22 PM, Nicholas Stock <
> > nickstock at gmail.com
> > >> >
> > >> > >> wrote:
> > >> > >>
> > >> > >>  Richard, on my 2000 A4 1.8T, there was a nipple on the top of
> the
> > >> > gearbox
> > >> > >>> housing which I believe was the master cylinder bleed (I could
> be
> > >> > >>> wrong..but
> > >> > >>> fluid definitely came out under pressure, it's been a while!). I
> > >> used a
> > >> > >>> motive power bleeder when doing my brakes and bled the clutch at
> > the
> > >> > same
> > >> > >>> time (probably not that necessary..but I thought, what the
> > hell...).
> > >> I
> > >> > >>> purchased the motive power bleeder from ECS tuning, but I'm sure
> > you
> > >> > can
> > >> > >>> find it elsewhere...hope this helps!
> > >> > >>> Does the Bentley not indicate where the clutch bleed is?
> > >> > >>>
> > >> > >>> Regards,
> > >> > >>>
> > >> > >>> Nick
> > >> > >>>
> > >> > >>> On Tue, Jun 3, 2008 at 7:11 PM, Richard Hurt <rnhurt at gmail.com>
> > >> wrote:
> > >> > >>>
> > >> > >>>  OK, I just replaced both the master & slave clutch cylinders on
> > my
> > >> '98
> > >> > Q
> > >> > >>>> 30v
> > >> > >>>> and boy was it fun!  The master was by far the hardest and took
> a
> > >> > couple
> > >> > >>>> of
> > >> > >>>> hours.  The secret to my installation was to use the firewall
> > >> > seal/steel
> > >> > >>>> washer off of the old master.  The new seal was too big for me
> to
> > >> get
> > >> > in
> > >> > >>>> properly.  I'm talking about the seal that goes around the main
> > >> line
> > >> > >>>> against
> > >> > >>>> the firewall - it only keeps out the rain and drafts and should
> > be
> > >> > fine
> > >> > >>>> to
> > >> > >>>> use the old one.  The slave was really not too bad at all.  I
> > took
> > >> off
> > >> > >>>> the
> > >> > >>>> drivers side front tire and had my Dad guide me in.
> > >> > >>>>
> > >> > >>>> Now for the big question: how the hell do you bleed the clutch
> > >> > >>>> system!?!?!
> > >> > >>>> We tried the old 2-man manual method but didn't get anywhere.
>  We
> > >> also
> > >> > >>>> tried
> > >> > >>>> the tube in a mason jar method with about the same results.  I
> > >> looked
> > >> > a
> > >> > >>>> little bit on-line and it seems like our cars (+ SAAB & Volvo)
> > >> require
> > >> > a
> > >> > >>>> pressure bleeder.  You can't use a vacuum bleeder because it
> just
> > >> > sucks
> > >> > >>>> the
> > >> > >>>> juice out of the master cylinder and I know that the manual
> > method
> > >> > >>>> doesn't
> > >> > >>>> work.  All we got were some light puffs of air coming out of
> the
> > >> > system
> > >> > >>>> but
> > >> > >>>> the pedal still drops right to the floor with no resistance at
> > all.
> > >> > >>>>
> > >> > >>>> Can anybody point me in the right direction here?  Any
> > >> recommendations
> > >> > >>>> on
> > >> > >>>> a
> > >> > >>>> pressure bleeder?  How about a DIY model?  The manual says it
> > needs
> > >> a
> > >> > >>>> pressure of 32 psi but that seems quite high to me.
> > >> > >>>>
> > >> > >>>> Thanx!
> > >> > >>>>  Richard
> > >> > >>>> _______________________________________________
> > >> > >>>> A4 mailing list
> > >> > >>>> A4 at audifans.com
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> > >> > >>>>
> > >> > >>>>
> > >> > >>>
> > >> > >>>  _______________________________________________
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> > >> > >>
> > >> > >
> > >> > >
> > >> > >
> > >> > _______________________________________________
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> > >> >
> > >> _______________________________________________
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> > >>
> > >
> > >
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