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o-ring on pistons in wheel cylinders

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  • Brakes: o-ring on pistons in wheel cylinders

    In 1952 and 1953 Studebaker changed the wheel cylinder guts to have pistons with o-rings. They used the same cores and shoes as used on earlier models. I have often wondered what was the real purpose behind this. The pistons are slightly smaller as are the holes on the wheel cylinder cups. Was this suppose to stop fluid from getting by the pistons? or???

    In 1954 they eliminated the o-rings

    Does anyone know the reason for the change??? thanks in advance
    Milt

    1947 Champion (owned since 1967)
    1961 Hawk 4-speed
    1967 Avanti
    1961 Lark 2 door
    1988 Avanti Convertible

    Member of SDC since 1973

  • #2
    Many many years ago (in the '70s or very early '80s) there was a question about these in Turning Wheels Co-Operator section. The specific reason for the O-rings was not known by person answering the question, but they did note that since the use of these was over a relatively short term, there must not have been any real advantage to the o-ring type design over the standard style piston.
    Paul
    Winston-Salem, NC
    Visit The Studebaker Skytop Registry website at: www.studebakerskytop.com

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    • #3
      Oh WHERE is Earle Haley when you need him?
      RIP Earle.

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      • #4
        Originally posted by skyway View Post
        Oh WHERE is Earle Haley when you need him?
        RIP Earle.
        here he is!
        Bez Auto Alchemy
        573-318-8948
        http://bezautoalchemy.com


        "Don't believe every internet quote" Abe Lincoln

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        • #5
          Originally posted by bezhawk View Post
          here he is!
          I thought that was Jack!
          Brad Johnson,
          SDC since 1975, ASC since 1990
          Pine Grove Mills, Pa.
          '33 Rockne 10, '51 Commander Starlight. '53 Commander Starlight
          '56 Sky Hawk in process

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          • #6
            New replacement OEM Wheel Cylinders for the '47 to ''53 Champion, Commander and Trucks, Lockheed Style Brakes have had NO "O" Rings for decades and work just fine.
            StudeRich
            Second Generation Stude Driver,
            Proud '54 Starliner Owner
            SDC Member Since 1967

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