View single post by Tom Bradley
 Posted: 07-15-2019 05:45 am
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Tom Bradley

 

Joined: 07-15-2013
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 This looks like what happened after I bought a rebuild kit for my master cylinder. When I took it apart I found that the O-rings were already going bad. Apparently someone put Buna-N O-rings in the kit, which do not hold up with brake fluid instead of Viton O-rings. My guess is that if you take the master cylinder apart you will find one or more o-rings disintegrating.