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Brake Master Cylinder Anatomy

I had a used master cylinder(m/c) laying around here for years.  I've been hanging onto it for just this purpose.  I think most of the info is covered in the videos.  Basically, it's just an FYI kind of page.  Most people have had to replace one, let alone, take one apart.  Keep in mind, I'm not a brake expert by any stretch of the imagination, so if you see/hear something that's way out of whack, feel free to email me about it.  Enjoy :)