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Crown Dual Master Cylinder

Discussion in 'Early CJ5 and CJ6 Tech' started by Mark Andrews, Sep 6, 2019.

  1. Mark Andrews

    Mark Andrews New Member

    On a Crown JO945556 dual master cylinder (67-70 CJ5), which port is for the front brakes, and which for the rear brakes?? Crown tech support doesn't know. "We only duplicate an original part, without knowing it specific functions". This is supposedly the duplicated Wagner-Lockheed original. Thank you.
     
    Mark Andrews, Sep 6, 2019
    #1
  2. Rick Whitson

    Rick Whitson Detroit Area 2024 Sponsor 2022 Sponsor

    Welcome from Michigan. You will get an answer, I believe it is the back is the front and the front is the back. I am thinking about putting one on my 64 CJ 5, bought the right bracket, from a member, but have not done the job as of yet. I want to put 11" brakes on the front first. I have all the parts probably will do the job this winter. Good Luck
     
    Rick Whitson, Sep 7, 2019
    #2
  3. jzeber

    jzeber Well-Known Member 2022 Sponsor

    This is correct. Rear port to front brakes and front port to rear brakes.
    From a while back when I first did this conversion, post #42 on page 3. D27 Disc brake swap on my 71'
     
    jzeber, Sep 9, 2019
    #3