Hanging rear caliper

Kneale Brownson kneale at coslink.net
Sat Apr 16 11:42:29 EDT 2005

What I wrote, Bernie, was that there COULD be corrosion on the piston,
especially if it was extended from the cylinder quite a bit by pad wear.  I
said nothing about it falling out of the cylinder.  DFIIIAB.

At 08:17 AM 4/16/2005 -0700, Bernie Benz wrote:
>Come on, get real, Kneale and Peter!
>Pistons can not extend far enough to drop out of the caliper seals, unless
>one forgets to install the rotor.  Using the passive pad wear detectors, I
>routinely wear my pads down to where the backing plates touch the rotor
>ridges.  Further, there is no piston "cocking force", tendency for the
>piston to cock or jam within the caliper bore.  They do get sludged up form
>lack of fluid change though.
>> From: Kneale Brownson <kneale at coslink.net>
>> So, have these gone unserviced for a year and a half?  Did you use new,
>> OEM, or some rebuilt stuff?  You might have corrosion on guide pins or the
>> caliper piston, especially if the pads are worn enough the piston is
>> extended quite a bit.
>> From: Peter Schulz <pcschulz at comcast.net>
>> Couple of thoughts...
>> Ebrake mechanism not fully releasing, or the pads are worn down to less 1/4
>> depth- and the caliper cylinder is extended to the point where its binding
>> on the cylinder walls.  If the Ebrake mechanism and cables are releasing
>> and functioning properly, drive the brake piston completely back into the
>> caliper.
>> -Peter

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