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Rear brake seals

To: spitfires@autox.team.net
Subject: Rear brake seals
From: Alan Lemen <alemen@ftconnect.com>
Date: Mon, 06 Dec 1999 12:53:11 -0800
Sorry I cut and pasted to get the email address on the last one.

Alan

Alan Lemen wrote:

> > Folks, anyone got an idea as to the various rear brake cylinder diameters.
>
> I replaced the seals from a kit but apparently it looks like they are too
> small as they leak like crazy when I bleed the front. I had taken the old
> seals out put them aside and then installed the new ones. I knew they would
> be a bit smaller due to the swelling on the older ones. I never really did a
> comparison as they looked like the right thing and the part nos. were
> correct for my model year. They held fine when I was bleeding the rear, but
> had not really the the pressure up due to all the air still in the front
> calipers.
>
> I have seen 2 sizes advertised 11/16" and 5/8" .
>
> The old seals look like 11/16" and the new ones nearer 9/16" (both at the
> narrower part.) I will be measuring the piston tonight. My car is a '76
> 1500.
>
> Also my brake pistons won't come out as the park brake pivot lever is in the
> way. Which again seems to confirm the fact that they have been changed as
> they should not block the cylinder according to the Haynes manual. I have to
> remove the complete assembly to get the pistons out.
>
> Alan


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