how to replace master cylinder, step by step

[Huw Powell]

> I just replaced my brake MC and I didn't have to bleed the system.
> Bentley goes as far as recommending bleeding the clutch slave cylinder
> after replacing the brake MC but all I did was bench bleed the brake MC
> prior to installation and when I was done all was fine.  Clutch did not
> sink to floor and refuse to come back up and the brake pedal was firm
> and car stops fine w/ no spongy feeling.  I've also replaced individual
> brake calipers and only bled that one instead of all 4 and had no
> problem. Am I lucky or just plain stupid???

I hate to be rude, but probably both.  Swapping a master should not
require bleeding the clutch, it takes luck to do it without any air in
the system.  Swapping a caliper also, shouldn't *require* bleeding more
than that cylinder.

However, since you are supposed to change your brake fluid every two
years, these are good opportunities to flush out all that horrible black
goo passing itself off as hydraulic fluid in your lines.

-- 
Huw Powell

http://www.humanspeakers.com/audi/

http://www.humanthoughts.org/