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74 Cj5 Proportion Valve Leak

Discussion in 'Intermediate CJ-5 and CJ-6 Tech' started by dkozma, Aug 29, 2018.

  1. Aug 29, 2018
    dkozma

    dkozma New Member

    New York
    Joined:
    Jun 17, 2014
    Messages:
    22
    Hi Folks,

    Installed new Proportion valve. Worked fine for a while then started leaking at the warning switch.
    Brake system is new. Aside from a faulty switch, are there any other possibilities in the system that could cause it to fail?
     
  2. Aug 29, 2018
    timgr

    timgr Jeepin' Nerd Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    18,914
    Faulty part. Should not leak. The warning switch section is simple - look at the TSM. It's a piston that only moves when there is a pressure imbalance between the front and rear circuits. There should not be any (or very much) pressure that can leak out of the switch part.
     
    Last edited: Aug 29, 2018

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