Brakes again

Kneale Brownson knotnook at
Tue Aug 24 09:19:43 EDT 2004

What KIND of grease, Brett?  Was it the Audi  spec?  I've seen rust come
back under the boot without it encroaching on the pins themselves.  I've
started to make sure there's a little G000650 in the groove on the pin
where the boot seats.  I've disassembled several calipers where I've used
G000650 as the lubricant over the last five or six years and found no rust
on the pins.  I wonder if there is some anti-hydroscopic property to the
Audi-supplied lubricant missing from other brands???  Or maybe it has a
clinging/coating property others lack???

At 02:22 AM 8/24/2004 -0400, Brett Dikeman wrote:
>At 11:52 AM -0700 8/13/04, Bernie Benz wrote:

>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...

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