Removing master cylinder 1962 Buick

Discussion in 'Classic Buicks' started by frankie62, Jan 4, 2014.

  1. frankie62

    frankie62 Active Member

    Hey everyone! Hope your New Year is going great so far.
    My 62 Lesabre has a single master non power assist. Previous owner had replace the master cylinder and it is not the correct unit. I BELIEVE it is a unit for a 62-66 full size chevrolet non power assist with 1in bore, base on pictures I've looked at. I wanted to remove it to see what the back looked like to confirm this yesterday but I could not get the pedal rod to separate from the master. Are they connected? I took the pin and washer off where the rod and the pedal connect but I could not get the rod off the pedal, is there a trick? I've never removed one before. It moves a little and then just jams and won't slide off that little pivot pin.

    If this is in fact a master from a chevrolet it opens up the door for folks on here looking for dual master setups that would work for our buicks. Thanks for the help! [​IMG]
     
  2. CameoInvicta

    CameoInvicta Well-Known Member

    To remove the master, you need to first remove the push rod from the pedal, like you were trying to do. If you remove the brake line & brake pressure switch first, you should be able to move the pedal around to a position where it will be easier to free the push rod. Don't be surprised if it takes a little force.
     
  3. frankie62

    frankie62 Active Member

    I was giving a good amount of force. There were a good amount of play in the, I feel enough to get the rod off the pedal. Is the rod attached to the master cylinder? I'm confused! Lol
     
  4. CJay

    CJay Supercar owner Staff Member

    There is a metal cup that fits on the back of the master that keeps the rod in place. Without the cup/ retainer, the rod would fall out of place and the pedal would go to the floor. Once the rod is disconnected from the pedal, you should be able to remove the master and rod as a unit and separate it on the bench
     
  5. frankie62

    frankie62 Active Member

    That's what I was thinking it was like. I will go down there and apply more muscle when it gets above freezing. I'm more curious than anything. The master cylinder on there works, the only issue is that the brake light switch doesn't because this master isn't designed for a hydraulic switch like was on there. The cobbled adaptors leak and cause air to get into the system. I plan on plugging it like it's supposed to be and switching to a traditional brake pedal switch. OR if a dual off a 67 Chevy would transfer, move it to the distribution block! :)
    [​IMG]
     
  6. nineteenfifty5

    nineteenfifty5 Well-Known Member

    I have a spare new in the box dual master power booster set up for sale , I used this same set up on my wife's 62 it's set up for drum drum pm me if your interested

    also this set will work on most early buick with drum drum
     
  7. tobyj1975

    tobyj1975 Member

    Hi, I am trying to convert to Power Brakes on my 1962 Buick LeSabre and I am having a hard time finding a Booster and Dual Master Cylinder kit for this car. For now I was wanting to keep it drum/drum. I have done my research and realize i would need the proper proportioning valve as well. I can't seem to get a straight answer from Summit or Jegs on a Universal. Sounds like you have some experience with this so I thought I would throw this out there. I know this is an old thread.
     
  8. telriv

    telriv Founders Club Member

    On a drum/drum set-up you DON'T NEED a proportioning valve.
     
  9. tobyj1975

    tobyj1975 Member

    Ok. I've got that backwards then. Thanks
     
  10. TheRev

    TheRev Silver Level contributor

    Frankie 62 - I had to grab the booster/master from the engine side of the firewall and pull and push it around to get the rod off the brake pedal. This technique worked within about 1-2 minutes. I made efforts to get it to slip off while laying on the floor but no dice.

    Toby, call Booster Dewey in Portland, Oregon for a booster. You can get a master married to the booster and shipped to you from him, or you can just buy your own master. boosterdeweyexchange.com/
     
  11. tobyj1975

    tobyj1975 Member

    TheRev - Cool! Thanks! I will check that out
     
  12. TheRev

    TheRev Silver Level contributor

    I used a 64 booster on mine. I understand you can use a 67 Wildcat drum/drum booster/master on the full size 62s as well.
     
  13. tobyj1975

    tobyj1975 Member

  14. TheRev

    TheRev Silver Level contributor

    Not sure, honestly I would just call Booster Dewey and take the guess work out of it. Lots of Buick guys have gotten brake parts from him, he knows this stuff inside and out.
     
  15. tobyj1975

    tobyj1975 Member

    Cool. Will do. Thanks again
     

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