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Re: I've had it! (with looking for brake air)

To: "MG LIST" <mgs@autox.team.net>
Subject: Re: I've had it! (with looking for brake air)
From: Max Heim <mvheim@studiolimage.com>
Date: Wed, 11 Aug 1999 17:59:37 -0700
Hmmm, hard to see how air (at atmospheric pressure) could leak in 
anywhere without brake fluid (at much higher hydraulic pressure) leaking 
out. It just doesn't work that way (especially at the bleed valve -- if 
it had an air leak, it would squirt fluid every time you applied the 
brakes). It would seem that you just haven't managed to bleed all the air 
out of the system yet. Don't take this as a knock -- I haven't either and 
my MC has been in for months.

Otherwise you may have a bum MC (internal leak), or an undetected fluid 
leak elsewhere (the caliper piston seals? steel line fitting at the MC?).

FWIW Midas, etc, don't seem to be able to bleed it any better than I can.

Question: is the fluid level going down?


Dan Ray had this to say:

>Yes, I'm afraid I might just break my long streak of never taking the B to a
>mechanic.
>The new White Post M/C is in and working ok, but there is air getting in
>SOMEWHERE in the front system, I think on the right side line. This is the
>same symptom I've had for a while, replacing M/Cs, etc. Is it possible that
>the bleed valves on the caliper is leaking air?
>There are no external leaks. Hmmph...maybe I'll try my Loctite teflon sealer
>trick on the bleed valves.
>I'm at the end of my rope with looking for the air!
>
>Dan
>73 B
>
>


--

Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the red one with the silver bootlid.


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