Now that I'm thinking about this, I'm fairly certain that the last pair of
rear wheel cylinders I installed had coil springs inside to keep the pistons
out; the rubber boots kept the pistons from falling out completely.

Does you old cylinder have the springs inside?

Dave

On Sat, Mar 28, 2009 at 8:46 AM, Edward Maglott <
emaglott@buncombe.main.nc.us> wrote:

> I can add some additional info to my saga now.  (I have the
> previously mentioned videos posted
> at:  http://www.youtube.com/user/emaglott  watch the piston on the
> right side.)
> I hooked up my pressure bleeder and put about 10psi on the
> system.  The piston stayed out against the shoe.  when I open the
> bleeder valve, the piston moves back into the cylinder away from the
> shoe. Close the bleeder, it moves back out.  I was still suspicious
> of the boot so I pulled it back, sort of inside out on the
> piston.  Then the piston stayed out when I opened the bleeder valve
> on the cylinder.  Then I took off the pressure bleeder and it still
> stayed out, even when I opened the bleeder valve.  When I put the
> boot back in place, it went back to its old habit of pulling back
> into the cylinder.  So I'm pretty sure it has something to do with
> the dust boot (ha ha).  I'm gong to take off the cylinder and put my
> old one back on (the one that wasn't leaking yet) and see if I get my
> nice firm pedal back.
>
> Edward
>
>
>
>
> <Snip>
>