All caliper seals are square section o-rings. They get that tapered look after
they have been in use for a long time. It is the deflection of the seal, and
its return to it's normal shape, that pulls the piston back after you let off
the brakes. After many years the seal becomes permanently deformed.
The trick for getting the boot to open up and fit around the piston (after the
initial fitting of the boot lip into the caliper bore) is to apply air, at a
very low pressure, to inflate the boot as you press the piston into the boot.
Of course, you have to first block off the other side by installing a piston
and clamping it in place so it doesn't blow blow out when you apply the air.
Richard Mayor
BN7L-466 Vintage Racer
Portland, Oregon
> From: simon.lachlan@homecall.co.uk
> To: healeys@autox.team.net
> Date: Thu, 26 Apr 2012 18:06:00 +0100
> Subject: [Healeys] fitting piston/caliper seals
>
> Hi,
>
> Can someone kindly remind me of the proper/easiest way to fit the seals
into
> my MkII BT7's callipers? I'm referring to the rubber boot things that go
> into the outer groove within the bore and the groove around the top of the
> piston.
>
> Likewise, don't I recall that the inner seal was slightly tapered? My new
> ones are square in cross section.
>
> Simon
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
http://autox.team.net/mailman/options/healeys/mayorrichard@hotmail.com
_______________________________________________
Support Team.Net http://www.team.net/donate.html
Suggested annual donation $12.75
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
Unsubscribe/Manage:
http://autox.team.net/mailman/options/healeys/mharc@autox.team.net
|