Brakes again

Bernie Benz b.benz at
Fri Aug 13 14:52:13 EDT 2004


These guide pins have 3 flats on their diameter to allow for displaced air
and/or grease to escape as the pin moves into the blind hole in the caliper.
Therefore, penetrating oil should be able to easily flow down the pin if
held in a vertical position.  Soak it, and then don't be timid with a wrench
on its hex head.

Have you ever, or how long has it been since you last flushed the brake
fluid?  Dito, rebuilt all calipers?  If you have a frozen guide pin with an
in tact boot, I can guess the answer!


> From: "Derek Pulvino" <dbpulvino at>
> Date: Fri, 13 Aug 2004 09:43:27 -0700
> To: 200q20v at
> Subject: Brakes again
> Ok, pulled off the caliper last night and as predicted, one of the guide
> pins is sticking.  All boots are fine, so no need to purchase replacements,
> but anybody have any suggestions on how to remove frozen guide pins?
> I thought about turning it with a wrench to break it free, but the nightmare
> scenario I pictured was turning to the breaking point.  BTDT's?
> Peter gave some pretty detailed instructions on rebuilding the caliper,
> however as I just have guide pin issues, and would rather not rebuild the
> caliper and bleed the lines, any reason to do this if the caliper is in fine
> working order?
> tia
> dp

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