Master cyl install
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Suspension, Brakes and Tires Discussion, Master cyl install in Item Specific Cadillac Discussion; ok how to do it and what to look for?...
  1. #1
    1969cadillaceldorado's Avatar
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    Master cyl install

    ok how to do it and what to look for?

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    terrible one's Avatar
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    Re: Master cyl install

    You disconnect all lines to and from, then unbolt it from the booster. Then you install the new one and hook the lines back up. Then you go buy some brake fluid and bleed all 4 brakes, then fill it up and you are done.

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    Re: Master cyl install

    Be sure to bench bleed the master cylinder first! Or it'll be a real pain to get all the air out later!

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    Re: Master cyl install

    ok well i didnt didnt bench bleed it yea i wish i would of now and i couldnt bleed the back brakes well it stops pretty good so idk if i need to but how do u bleed the back brakes

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    Re: Master cyl install

    You might have to keep bleeding them until you get all the air out of them. The rear lines are much longer than the fronts, so it will take a lot more fluid to flush all the air out.

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    Re: Master cyl install

    how do i bleed the back brakes i cant find anywhere to bleed them

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    Re: Master cyl install

    One the back side of the drum backing plate, you will see the bleeder screw. It's usually near where the brake line goes through it.

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    Re: Master cyl install

    Quote Originally Posted by caddydaddy
    One the back side of the drum backing plate, you will see the bleeder screw. It's usually near where the brake line goes through it.
    well in the middle of the axle all the rear lines meet up thats where i bled it is that bad that i did or what?

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    Re: Master cyl install

    Yeah, that's not the place to bleed the line, you'll still have air from that junction to the brake cylinders. Do you have a service manual for your car? Because I'm not too familiar with the '69 Eldo to tell you exactly where the bleeder screw is. It should be on the back side of where the brake drum is. It does have drum brakes in the rear, right?

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    Re: Master cyl install

    no i dont have a service manual but where i did bleed it,it worked cause took a while to get the air out but i just need to ask is it safe to drive car if there is still air in the brake system??

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    Re: Master cyl install

    No offense... but if you cant even find the bleeder screws im very curious on how your going about "bleeding" the brakes.

    '69 Eldo's did not have rear discs yet so you are going to be bleeding a wheel cylinder. There is a junction back there which you bled (somehow ) follow the lines that split off to each wheel. Right above the line where it screws into (ON THE WHEEL CYLINDER) is a bleeder screw...

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    Re: Master cyl install

    And remember, bleed until fluid is coming out of all 4 lines.

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    Re: Master cyl install

    The other thing to make sure of when you replace a master cylinder is that the push rod is properly adjusted to the new cylinder. You need the factory shop manual to make this adjustment. In 90% of the times that you are working on the car, the factory service manual will be a great help in saving you time and removes the risk factor of doing more damage than repairs... I have seen many good parts ruined or replaced because of lack of knowledge in determining if the part is good or bad. The service manual will take a lot of that risk out of the equation. It might be the best $25 you will ever spend on that car.... Junk..

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    Re: Master cyl install

    ok where i bled the brakes was the rite place the brakes place said it was so anyways CAR IS BEING SOLD i have put $600 into this car and i get everything to work and now i something is burning inside the car dont know what it is and i dont fill like dropping anymore money on this car but if someone can help me out with my new problem that would be great but if not ill sale it

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