Brakes again

Brett Dikeman brett at
Tue Aug 24 02:22:05 EDT 2004

At 11:52 AM -0700 8/13/04, Bernie Benz wrote:
>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!

These pins came off a caliper that was 'rebuilt' a little over a year 
ago, maybe two.

The one on the left is the lower pin.  Both had intact boots.  Both 
had the boot seal area sandblasted clean and then sanded smooth- and 
coated with grease before installation.  Both were 'turned' using an 
electric drill and polished to a mirror finish, and the inserts were 
sanded of any burrs.

Both had plenty of grease in them when they came off this evening- 
but with the lower one, the grease was full of rust.  It's a little 
hard to tell from the photo, but the right pin has much more rust 
around the seal area of the boot.

The passenger side pins were in practically perfect condition.  The 
calipers were rebuilt at the same time...

"They that give up essential liberty to obtain temporary
safety deserve neither liberty nor safety." - Ben Franklin

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