Re: Brembo caliper rebuild kits

[Jaap Bouma <j.h.bouma@domain.elided>]

At 11:23 PM 4/5/99 -0400, John Katos wrote:
>Are you sure the piston rotated? I had the same symptoms with my Milano and 
>it turned out that the pads had worn to the point that the retaining spring 
>was keeping the pads from contacting in the front. The front of the pads
were 
>held apart and this caused accelerated wear on the inside of the pad. The 
>creaking was the metal retaining spring being flexed.

Quite sure, yes. The edge of the piston has a cut-out, so that it touches
the pad at about 3/4 of its circumference. Unless I'm very wrong, the
piston should be positioned so that this cut-out is at the top. Three of
the pistons in my calipers were sitting correctly, one had been rotated,
causing excessive wear at the top of the pad (i.e. the leading edge when
the car was going forwards). I'm guessing that this caused the piston to
tilt in its bore, with metal to metal contact as a result. Then again, the
excessive wear at the top of the pad may have caused the pad to push
against the retaining spring. I didn't check this as I dismantled the brakes.
Thanks for the feedback!


Best, Jaap Bouma (Netherlands)
'87 GTV6 2.5 Grand Prix

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