[V6-12v] Clutch Master and Slave Cylinders

George Tur getur at optonline.net
Tue Oct 30 17:54:37 PDT 2007

On Tuesday 30 October 2007 19:23, Casimiro Izquierdo wrote:
> Well, the semi-dealer mechanic wants a fortune to change these two
> cylinders.  My home visiting mechanic did not show up today, so it looks as
> if I will have to do this job by myself.
> There are some small problems though.
> 1- I have no idea where these cylinders are located.  I gave a very
> perfunctory look from above and could not find anything that looked like
> these cylinders. 2- I know that they work with brake fluid, do I have to
> drain the system and then fill it up and bleed the brakes?  A lot of air is
> going to get into this system if I do that. 3- Does anyone have any
> graphics or pictures that show the location of these cylinders? 4- Any idea
> about the order in which these units should be replaced?
Not sure of the exact placement of the master clutch and slave clutch 
cylinders on a 90 model, but take a look at the clutch pedal and you should 
see the rod for the master clutch cylinder right below the clutch pedal pivot 
point. The clutch master cylinder will be mounted to the firewall internally. 
On the other side of the firewall you should see two lines coming out of the 
master cylinder, one line will go up to the brake reservoir, while the other 
line (usually the lower and a hard line) will go to the clutch slave 
cylinder. Typically on the Audis the clutch slave cylinder is mounted on the 
top of the transmission housing.

I've never done one of these jobs myself, just observed and handed over 
wrenches and odd tools while friends have worked on their cars and yes they 
have had to bleed the system on their cars and the slave cylinder was always 
a bear to get at.

Hope this helps

George Tur
ex 95 A6Q owner

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