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Date:         Mon, 15 May 2006 20:44:51 -0400
Reply-To:     Edward Maglott <emaglott@BUNCOMBE.MAIN.NC.US>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Edward Maglott <emaglott@BUNCOMBE.MAIN.NC.US>
Subject:      Brake system overview
Content-Type: text/plain; charset="us-ascii"; format=flowed

Still trying to bleed my brakes, and getting no, or very little fluid from the front calipers. See my original message below. Now I'm wondering if the 2 circuits coming from the master cylinder are really front and rear, not split diagonally like I thought. Can anybody confirm this? If so, which line from the MC is for the front brakes and which for the rear? Maybe I need to bleed the offending circuit of the MC better before trying to bleed the lines.

Edward

>Here's the short version of the events. Replaced Master cylinder. Broke >off a bleeder on one of the rear cylinders, so the project stalled. I went >out of town, etc, about 3 weeks pass. Anyway, put in the replacement rear >wheel cylinder, and start to bleed again. rear wheels bleeding fine. At >one point I was getting fluid out of LF, but I don't think the RF ever was >giving me much. Now I pump the pedal and then hold it to the floor, open >the bleeder and get a very slow minimal flow of fluid. The caliper is >actually loose like there is no pressure in it pushing on the piston. I >suppose it could be seized but I don't think so since it is only a year or >2 old. And the LF is doing the same thing now. > >Bentley talks about pushing the lever on the brake pressure regulator >toward the rear axe while bleeding. I think that instruction is from >another car, since there is no lever on the brake pressure >regulator. There is a procedure to test the Brake Pressure regulator, >that involves removing it from the body and tilting it forward. Should I >have to do that to bleed the brakes? I could find no hydraulic schematic >in the Bentley, but assume this is a dual diagonal braking system.


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