Thank you very much for all the ideas on piston removal. I will try the
compressed air first with C clips (well fencing wire) and then graduate to
grease.
Thank you again - this is fun. I have another question but will put that in
the next email.
Simon
'77 boxed up MGB
>From: "Richard Crump" <rcrump@enid.com>
>Reply-To: "Richard Crump" <rcrump@enid.com>
>To: <Ajhsys@aol.com>, <mgs@autox.team.net>
>Subject: Re: can't remove the brake piston
>Date: Tue, 1 Feb 2000 16:37:05 -0600
>
>Allen:
>I always throw the two caliper halves into the carburator acid vat after
>removal of the excess grease. Then I flush w/ water and finish up w/
>compressed air.
>Have done this countless times with no adverse effects.
>Richard
>----- Original Message -----
>From: <Ajhsys@aol.com>
>To: <rcrump@enid.com>; <mgs@autox.team.net>
>Sent: Tuesday, February 01, 2000 2:06 PM
>Subject: Re: can't remove the brake piston
>
>
> > In a message dated 2/1/00 2:02:19 PM Eastern Standard Time,
>rcrump@enid.com
> > writes:
> >
> > << I disapprove of compressed air. It makes a mess when and if the
>piston
> > blows out. Place a 3/8 fine thread bolt in the hole for the brake
>line.
> > Open the bleeder nipple. Take your grease gun and force it on to the
> > nipple. Start pumping. As one piston will get ahead of the other,
>place
>a
> > c-clamp on it before it makes it all the way out of the caliper and
>then
> > pump the other piston out. This is a kinder, gentler way to remove the
> > pistons and you have to clean the calipers up anyway. >>
> >
> > - - - - - - - - - - - - - - - - - - - - -
> >
> > If you are advocating pumping the caliper full of grease to push the
>pistons
> > out, I have to disagree. Everything I have read about brake systems
>says
>to
> > prevent contamination of the system with petroleum products. It would
>be
> > very difficult to remove grease from inside a caliper, and make it clean
> > enough to not contaminate new brake fluid. Plus, most of the books say
>to
> > extract the pistons using compressed air.
> >
> > The only way I can see to properly clean a caliper after doing this
>would
>be
> > to separate the caliper halves. This is not recommended as a normal
>rebuild
> > procedure.
> >
> > You (listers) can do what you want, but IMHO, do not pump grease into
>your
> > calipers. If I misunderstood your meaning, please write again and
>explain.
> > I am always open to new ideas, but Safety Fast where brakes are
>concerned.
> >
> > Allen Hefner
> > SCCA Philly Region Rally Steward
> > '77 Midget
> > '92 Mitsubishi Expo LRV Sport
> >
>
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