Re: Rear Brake Options - '83 Ur-Q

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <365850A4.83778F5D@cablemichigan.com> johncorbishley writes:

> Share??
>
> Phil Payne wrote:
>
> > In message <3658318F.D9ECDB6C@cablemichigan.com> johncorbishley writes:
> >
> > > ... the inside pad on the rear passenger side was
> > > right down to the metal, while the other pad has plenty of material.
> >
> > > ... the pins are corroded and full of gunge.
> >
> > > Any ideas as to what caused the one pad to disintegrate, ...

Self-defining.

The brakes are applied, and released.  Because the pins are gunged,
only one side releases.

Look at the way the system works - the piston exerts direct force
against one pad.  Dear old Newton tells us there's an equal and
opposite force - this drags the caliper across and pulls the other
pad into contact.  When the pressure goes, only the first pad (the
one addressed directly by the piston) releases - the stiffened pin
just holds the other one in place.

I have a set down in the garage that I removed last weekend - just the
same.  What I can't figure out is _why_ one of the pins was gunged,
since the boot appears to be in perfect order.

--
 Phil Payne
 Phone: 0385 302803   Fax: 01536 723021
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