lubricant for assembling calipers and MCs

[Konstantin Bogach]

I don't have these Audi's greases.  I put Valvoline SynPower in e-brake cavity,
I have special grease for pins.  Now question arises: what composition O-ring I
should use on big threaded shaft (which seals e-brake cavity from brake
fluid)?  My research shows that it should be EPDM (Ethylen-Propylene rubber)
which is the best in brake fluids. But I can not find out how it works with
synthetic grease.  It is not good for petroleum greases.  There is not
synthetic oil/grease in compatibility chart and I don't know what is in
synthetic  lubs.  It is scary to think what happen if that o-ring disintegrate
and you lose brakes on a highway.

Konstantin.


Kneale Brownson wrote:

> Which lube, Konstantin?  There's a grease Audi specifies for the pins in
> the carrier and there's a different lube for the inside of the parking
> brake lever rod cavity.  I bought a tube of both from Carlsen Audi a couple
> years ago.  Linda told me it would be a life-time supply of each, but she
> didn't know I was so old my grandsons probably could use it for their
> lifetimes.  It was $20-30 for the two tubes, which are the size of a large
> tube of toothpaste.  They're G052150A2 Lithium Grease (for the parking
> brake cavity, I think) and G000650 Lubricating Paste for the pins.
>
> At 02:54 PM 03/06/2002 -0500, Konstantin Bogach wrote:
>
> >Hi.
> >
> >Can someone tell me what lubricant I can use for assembling brake
> >caliper?  I thought I can use brake fluid for this but I found out that
> >there is special lub for this.  Do I need to buy it? Can I use some
> >other more common lubricant?
> >
> >I still can not find information for what ID size of o-ring I should use
> >if a shaft size is 10mm (ID 10mm turned out to be too loose, in my
> >opinion)
> >
> >Thanks.
> >
> >Konstantin Bogach.