When I rebuilt the brake master cylinder on my son's 79 B I couldn't get
fluid pumping through for anything. I must have tried for 2 hours with no
luck, and a lot of frustration. I finally came up with a simple idea that
worked perfectly. I had a spare filler cap for the master cylinder. I
drilled about a 3/8 inch hole through it. I then adjusted the pressure on
my compressor down to about 5 psi. I opened one bleed valve at a time and
applied pressure to the master cylinder with a rubber tipped blow gun. It
pushed the fluid through with no problems. It was the easiest bleed job I
ever did, and it didn't cost me a fortune. I just finished rebuilding the
master cylinder on my 80 B last night. After I get the calipers finished
and remounted I intend to use the same method for bleeding this one.
Does anyone have the secret for installing the metal retainers with out
bending them in the calipers? Those things are a royal pain to get in.
Ken
-----Original Message-----
From: owner-mgs@autox.team.net [mailto:owner-mgs@autox.team.net]On Behalf Of
James H. Nazarian, Ph.D.
Sent: Monday, December 03, 2001 8:00 PM
To: Ryan, Wesley
Cc: 'Bob Howard'; mgs@autox.team.net
Subject: Re: Clutch Problems
"Ryan, Wesley" wrote:
>
> Just a quick thought. according to my theory by using a mityvac system
(easy bleed) for a MC you are able to pull the fluid through without
actually pumping the petal. if this is true by just opening the
valve...eventually the fluid would run down. am I correct? The reason I ask
this is when I removed the hose directly attached to the Master cylinder no
fluid runs out at all. However if I push I hear the sound of air being
sucked in. would all of you agree that there is clog somewhere in the MC.
>
I went through the exact same routine two weeks ago with my son's 1972
MGB. I used to have an EeeZee Bleed. I always had good luck with it
until I lost it. For some reason that now evades me, I bought a MityVac
this time. I did not have good results with it. I was not able to get a
good suction from the clutch slave nipple; if the nipple is loose enough
to let fluid pass, it is also loose enough to allow air to be drawn
through to the MityVac.
I think that sound we both heard is a big ol' air bubble at the back end
of the MC piston. The EeeZee Bleed would push fluid down to the nipple
in one continuous motion from it's own reservoir. The MityVac can't do
that given the design of the MG Clutch Slave Bleeder Nipple.
That is just my frustrated opinion. I have every expectation that I will
have to buy an EeeZee Bleed to finish this job.
--
Jim
microdoc@zoominternet.net
1960 MGA 1600 Very Red
1974 MGB-GT Damask (Very Burgundy) Red
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