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Re: TR-4A - Flushing brake lines, how to?

To: Joe Curry <spitlist@gte.net>
Subject: Re: TR-4A - Flushing brake lines, how to?
From: fred thomas <vafred@erols.com>
Date: Sat, 15 Aug 1998 07:54:27 -0700
Cc: triumphs@Autox.Team.Net
References: <v03102807b1f8dbf78870@[128.84.47.176]> <35D54576.F6057809@ricochet.net> <35D54850.74253C0E@gte.net>
Joe Curry wrote:
> 
> Alan,
> One problem with using compressed air to blow out brake lines is that
> unless there is an adequate desiccator in-line, compressed air typically
> carries a great deal of moisture.  Because silicon based brake fluid
> does not absorb moisture the way other types do, you could be
> introducing a different type of contaminant into the system.
> 
> Just a thought!
> 
> Joe Curry
> 
> Alan Myers wrote:
> >
> > How about a turkey baster? Might need a rubber hose on the end to bring
> > it down small enough for the brake pipes. I agree you should keep the
> > alcohol away from the rubber parts. Does your car have the restrictor
> > inline to the rear brakes? Might want to remove it before flushing. The
> > manual I have says to use "methylated spirits" which I looked up in my
> > British to American translation dictionary and found was plain old
> > denatured alcohol solvent (get it at a hardware or paint store). Might
> > want to blow a little compressed air to push out as much alcohol as
> > possible before reassembling. Then be sure to "waste" plenty of the
> > fresh, clean brake fluid as a final flush.
> >
> > Alan Myers
> > San Jose, Calif.
> > '62 TR4 #CT17602
> >
> > Philip E. Barnes wrote:
> >
> > > At 11:06 AM -0700 8/13/98, John Cowan wrote:
> > > >     I plan to flush the brake lines on my TR-4A with alcohol before
> > > >reinstalling the Master Cylinder.  The best approach would seem to be
> > >
> > > >disconnecting one line from its slave cylinder, starting from the
> > > farthest
> > > >most, flushing out the open line, reconnecting it and then moving on
> > > to the
> > > >next.  Then, when all four have been done and reconnected, opening up
> > > the
> > > >bleed valves one at a time on the slave cylinders to flush them out,
> > > too.
> > > >Then, repeating the whole process with fresh brake fluid, using the
> > > >reinstalled MC.
> > > >    The question is, what can I use initially to pump the alcohol
> > > through
> > > >the system?  I don't want to use the MC, since I only want to put
> > > brake
> > > >fluid into it.  Any suggestions would be appreciated.
> > >
> > > I'd be very reluctant to run alcohol through anything other than the
> > > brake
> > > pipes themselves. (Perhaps I misunderstand you.) Using a large syringe
> > > to
> > > force the alcohol through the pipes ought to work. I'd try to get a
> > > good
> > > lab-grade isopropyl or methyl-alcohol; they are very dry. Blow them
> > > out
> > > with compressed air when you're done.
> > >
> > > Phil Barnes (peb3@cornell.edu)
> > > Cortland, NY (nowhere near New York City)
> > > '71 TR6  CC61193L (21 year owner)
> >
> > --
> > MZ
> 
> --
> "If you can't excel with talent, triumph with effort."
> 
>  -- Dave Weinbaum in National Enquirer

If I may add = why do we bleed brakes = to remove air, and trying to blow 
the system out will certainly leave air. (also moisture)


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