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[alfa] Re: Rattling brake pads



But if there's axial slop in the piston-pad-disc assembly, then your pedal travel is going to be longer than it needs to be. If that's the case, I would recommend some kind of shim, although I don't understand why this piston wouldn't just stay put after pressure is released. Perhaps the problem lies with the master cylinder or pressure regulator, and it's only apparent on the new caliper because the pistons on the other side are too crusty to move that freely in their bores.

-Joe


At 3:30 PM +0000 7/1/04, alfa-digest wrote:

Date: Thu, 1 Jul 2004 19:36:55 +0930
From: "The Baylys" <dabaylys@domain.elided>
Subject: Re: [alfa] Rattling brake pads

Mark,

you can buy 'anti-squeal' which is just a rubber/silicone compound you apply
to the backing plate of the pad where the piston touches.  A smear of this
should fix the noises.

Then again, the noise will likely disappear after a few miles.

Beatle
Oz
- ----- Original Message -----
From: "Mark Denovich" <denovich@domain.elided>
To: <alfa@domain.elided>
Sent: Thursday, July 01, 2004 10:25 AM
Subject: [alfa] Rattling brake pads


 Put new pads (Carbotech Hawks) and rotors all the way around on my '86
 Spider.   I also replaced the driver's rear brake caliper as the
 piston was hopelessly stuck in the bore.   I was low on patience and
 shelled out the $100 for a refurb unit.

 Everything works great.  The new pads kick ass.   The only problem is
 that in the newly replaced caliper the pads flop around a bit and make
 noise.   It seems like the pistons retract far enough to allow them to
 move around and make noise.   This noise goes away with the lightest
 touch on the brake pedal.   I confirmed that the pads have a ton of
 clearance at rest, and that nothing else is loose.   Pad spring is
 properly installed.

 Should I just live with it?   I only hear the noise when I'm driving
 next to a Jersey barrier where it is reflected back at me.
 >
 --Mark

 PS:  The Alfa Wiki is currently off-line.  For some reason power
 problems only seem to occur when my sysadmin is on vacation.   It's
 hosted for free so I can't really complain.   Need to invest in UPS.
 > This also explains the gmail.com email address.
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