On May 19, 1:08=A0am, "Steve W." <csr684...@[EMAIL PROTECTED]
> wrote:
> hillpc wrote:
> > Got a buddy of mine's 66 Mustang over here to troubleshoot no brakes,
> > among other problems. =A0Manual drums. =A0Been sitting for several
years=
..
> > Master cylinder empty, front drivers brakes all dirty and gunked up,
> > looking oily, so I suspect wheel cylinder slight leak. No other
> > obvious leak points, though the metal brake line going to the back
> > looks so heavily rusted I wouldn't trust it, especially with the
> > single reservoir master cylinder. =A0I put fluid in the old master
> > cylinder and there's absolutely no pedal firmness, though I haven't
> > bled any wheel cylinders yet. =A0I did let some fluid out the little
> > allen plug on the front bottom of the master cylinder. =A0The brand
new
> > fluid immediately turned dirty opaque brown after pumping the brakes.
> > And to top it all off, the rubber gasket will not fit back inside the
> > cap now. =A0Do these things grow in size or is there some trick to
> > installing them (and which way is up)? =A0My inclination at this point
> > is to buy a new or rebuilt master cylinder and front drivers wheel
> > cylinder. =A0Any comments?
>
> They swell if they get contaminated with any type of petroleum product.
> I would replace the master, ALL rubber lines and all wheel cylinders.
> Also you will want to look over the steel lines REALLY close. If they
> look rusty replace them. Being a popular vehicle there are all stainless
> kits available as bolt on items to replace the lines. Not really cheap
> bust for a pony car I'd spend the money.
>
> Keep in mind that a car is rather difficult to stop if the brakes fail.
> How much is your friends life worth?
>
> --
> Steve W.
> Near Cooperstown, New York
>
> Life is not like a box of chocolates
> it's more like a jar of jalapenos-
> what you do today could burn your ass tomorrow!- Hide quoted text -
>
> - Show quoted text -
What Steve said. The swollen gasket is a sign that you should not
trust ANY rubber in the system, period. it's time for a full brake
job including hoses. If the shoes are not contaminated you can reuse
them but everything hydraulic should be cleaned and rebuilt - or just
buy new wheel cylinders if you don't feel comfortable doing them
yourself (probably not a bad idea, at least 50% of the time when
trying to rebuild you will find at least one cylinder with pits that
won't hone out.) Replace all hoses, replace or rebuild the master
cylinder, and consider buying a new brake hard line kit for the
vehicle - being a popular model you can probably get new all stainless
lines from any number of vendors.
You probably can get "driveway brakes" by bleeding them; the fact that
one front wheel was oily tells me that it leaked all the way down so
there's tons of air in there. I wouldn't drive more than in and out
of the garage like that though.
Now is a good op****tunity to remove the backing plates, bead blast and
paint them, weld up any grooves that have formed where the shoes ride,
and repack the wheel bearings.
good luck
nate
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