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Re: MGB Brake Bleeding Problem

To: MG List <>
Subject: Re: MGB Brake Bleeding Problem
From: Max Heim <>
Date: Wed, 20 Jul 2005 20:14:01 -0700
If the pedal goes to the floor, and the fluid doesn't move in the MC, that
tells me the MC seals are blown internally. I believe that particular MC is
the very devil to rebuild (if it's the one I'm thinking of), so I'd just go
ahead and get a new one.

This may not be your only problem, by the way, but it's a start <g>.


Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires

on 7/20/05 6:53 PM, at wrote:

> Thanks, Dave,
> The master cylinder is holding brake fluid even with the bleed valves
> removed from the calipers and rear brakes.  The pedal (middle one) simply
> goes to 
> the floor.  I would think that fluid would leak if there was a  break
> somewhere.  I'm suspecting there is a lot of air and the system needs  primed
> or it's 
> clogged.  The car hasn't run for at least five years.
> Steve Hughes
> In a message dated 7/20/2005 8:35:22 P.M. Eastern Standard Time,
> writes:
> Steve,
> I have never had much trouble bleeding my 72 B.   Since none of the wheels
> want to bleed, I would suspect the master  cylinder or perhaps a leak that
> prevents any pressure to build up.   If the pedal is hard it may be a
> blockage between the M/C and the  front/back balancer that is mounted on the
> driver's inside front  fender.
> Good luck,
> Dave 72 B
> ----- Original Message -----
> From: <>
> To: <>
> Sent:  Wednesday, July 20, 2005 2:03 PM
> Subject: MGB Brake Bleeding  Problem
>> MGB experts:
>> I can't get front or back  brakes to bleed on the 72 MGB I acquired a
>> month
>> ago.  I  did get fluid once I took the bleed valves out but after
>>  rebuilding
>> the calipers: no fluid.  I haven't gotten any fluid to  bleed  from the
>> rear
>> brakes.  How do I get the  fluid to flow?
>> Thanks.
>> Steve Hughes
>>  Gainesville, FL

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