dgracer

Did a search and there were theories of what has to be done but does anyone know the actual procedure (not bleeding in general, but in consideration of the ABS unit)? I've bled several non-ABS cars before but this would be my first ABS equipped bleed.

thanks,
DG

King of the Road

I have done it on a Volvo, Passat, 328i all with ABS using the vacuum system. As long as you use the right equipment, I did not see any difference

fuzzy02CLS

iTrader: (2)

What I have read is that the ABS unit is a self contained unit seprate from the rest of the brake system. It only needs to be bleed when you replace the master cylinder. For regular brake fluid changes or regular bleeding, or brake work use standard bleeding procedures.

Smitty

and how exactly do you bleed the ABS unit if you replaced the Master cylinder?

fuzzy02CLS

iTrader: (2)

It's in the service manual if someone can scan the pages. I heard it basically the same for every ABS equiped car, not sure however.

Smitty

you can Pressure Bleed it through the Master cylinder... NOT VACUUM bleed throug calipers..(vacuum bleeding will not get the air out of the ABS unit.

or

you can manually crack each line open on the ABS unit while someone pumps the brakes and holds the brake pedal down.. then close it before they let the pedal up.. But this method is VERY MESSY...

dgracer

How would one pressure bleed through the master cylinder?

Smitty

need a pressure bleeder system silly goose...

I was not too happy with this one since it claimed that it is a 1 man job...

I used it but still needed to have my buddy pump the brakes while I bled the system at the bleeders on each calipers.

http://www.motiveproducts.com/

Smitty

P.S. this company has free shipping if you wish to order one.

http://www.apexperformance.net/brake%20bleeders.htm

dallison

i use a one man bleeder for all my cars. i just havent done it yet to my cl. its about 18 inches long. most of it is clear tubing and about 2 inches of black tubing.

all ya do is open the nipple on the caliper after placing the tubing on it. and theb you can pump the brakes.

of course start from the furthest wheel from the brake fluid reservior and work your way up

Smitty

true but your talking about just bleeding the brake system..
We are talking about bleeding the ABS unit.