Roger Garnett wrote:
>
> On 18 Nov 97 at 16:57, Heather & Joe Way wrote:
>
> > > "Gently move the piston up and down in the cylinder bore to free the nylon
> > > guide bearing..." That might work on a brand new assembly. Out of five
> > > master cylinders I have recently disassembled, only one nylon bearing (the
> > > one out of my Midget) came out relatively easily.
> > > Steve Byers
>
> > I have a porta-power pump set up with a collection of adapter fittings
> > to pump out pistons. Sometimes it's necessary to seal other ports with
> > plugs or clamps. 1500lbs of hydraulic pressure will almost always move
> > them--
>
> But, but, but-- the main reason there is a problem, is that there is another
> circlip under the nylon part. This is what keeps keeps the piston from pushing
> it out. Even a lot of pressure isn't going to work, unless you expect the
> piston to shear the circlip. (that would make a mess! )
>
> I've tried tapping into the nylon with long sharp screws- no go. Best still
> seems to be to break it up, and remove the pieces.
> ________________________________________________________________________
> Roger Garnett (Roger-Garnett@cornell.edu)
----
You're quite correct, Roger. I meant to respond to the question (which
was in the original post but has been snipped) of the stuck secondary
piston with the description of my pump. I should have made it clear that
I was *not* suggesting the use of a pump to "blow out" the nylon sleeve.
I have no good answer for that problem.
Joe
--
==brake cylinders sleeved with brass==
==One-Wire conversions and rebuild
kits for GM alternators 1963-85==
==Quincy, CA==
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