how to replace master cylinder, step by step

[Bill Rowe]

I guess you missed my point.  The point I was trying to make is that
Bentley (and many on the list) do more than is required.  Bentley says
to bleed all 4 calipers starting w/ the right rear and then finish by
re-doing the right rear.  I just bleed the one I replaced.  Bentley also
says to bleed the clutch slave cylinder first and then the brake
calipers after replacing a brake MC.  I did neither and my clutch and
brake pedals are fine.  I've also never replaced my brake fluid or
coolant and all is fine. 

-----Original Message-----
From: Huw Powell [mailto:audi at mediaone.net] 
Sent: Friday, October 19, 2001 3:45 PM
To: rowe at yankeeprinter.com
Cc: 'Kneale Brownson'; 'scott hauver'; quattro at audifans.com
Subject: Re: how to replace master cylinder, step by step


> 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/