Disc Brake Swap Problems

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Old Jan 23, 2010 | 06:16 AM
  #1  
BerBer5985's Avatar
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Disc Brake Swap Problems

I finished my disc brake swap with CPP's front disc brake swap kit and I bled the brakes, or at least I thought I did and it seems like it has no brake pressure still. I hooked it up from the master cylinder to the prop valve that came with the kit, and then the hardlines to the front and rear brakes that also came with the kit. It also seems to me that fluid is leaking out of the back of the master cylinder where the master cylinder bolts to the power brake booster. There is no brake pressure. Did I hook it up right, or what did I do wrong and is there a way to fix it?? I hate brakes!
Old Jan 23, 2010 | 06:30 AM
  #2  
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First make sure the lid is on good. If it is than it sounds like you have a bad master cylinder. Than it will have to replaced.

Plus it will take several times bleeding to get all the air out.
Old Jan 23, 2010 | 07:38 AM
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Well the master cylinder is brand new. IS it possible they sent me the wrong one. And why would it be leaking? I just worry that maybe I didn't hook it up right or I'm missing a piece. I think I should only need just the new prop valve that came with the kit to swap and no other metering valve or anything. Any ideas guys?
Old Jan 23, 2010 | 09:45 AM
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Always bench bleed the master cylinder off the car.

That way you can verify that it is good.
Old Jan 23, 2010 | 09:55 AM
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I did bench bleed and I don't recall it leaking. I don't know why it would be now. A leaky master cylinder would explain why the brakes aren't working. I'm gonna check it out again. I had to hook up the brakes in a hurry because I had to roll the car out of the garage, so I just used the emergency brakes to stop the vehicle during the roll. I was thinking I just hooked it up wrong but I kept noticing a little brake fluid on the floor and all the lines didn't appear to be leaking, so I finally traced it to it slowly dribbling out of the bottom where the master cylinder bolts to the brake booster. I'm gonna check it once again and just take the thing off and check it.
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