Question about 1986 Ford F 250

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I installed a master cylinder on a 1990 Aerostar van. The instructions that came with the part said not to bench bleed, it may cause leaks. I bleed it on the vehicle with the bleed screw on the master cylinder and I still have air. What do I need to do?

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Bleed it from wheel to wheel the one fartest from the cylinder andworking away around till yo are at the closest, you need a quart of dot 3 brake flid to do it and two people to do it, pump the pedal three times ad release the cylider valve and do so til yo get clear brake fluid do this which each wheel and keep filling the master cylinder, do this twice if it's working the pedal will keep rasing. if the pedal becomes sollid and still not all the way up then adjust the rear brake start wheels where te wheels barely touch the drums, aslo there is a compensating valve on the rear axle remove the nutthat holds it to the bed and open it wide open and continue to bleed, that should fix you up.

Posted on Jun 21, 2009


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