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Replacing master cylinder

Discussion in 'Early CJ5 and CJ6 Tech' started by outlaw5.9, Aug 8, 2009.

  1. Aug 8, 2009
    outlaw5.9

    outlaw5.9 New Member

    Michigan
    Joined:
    Nov 17, 2007
    Messages:
    27
    Is there any tricks that I will need to know when I put the new master cylinder on the '63. I have never worked on such a mechanism.
     
    outlaw5.9, Aug 8, 2009
    #1
  2. Aug 8, 2009
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
    Messages:
    4,275
    #1: You MUST bench-bleed a new MC or else you will never get a good pedal feel.

    #2: When you get it all installed, start bleeding from the wheel closest to the MC and then work away from it.

    #3: Bleed twice, and then top off the MC with fluid from a FRESH can of brake fluid. You might get away with three times, but if you run dry you have to start all over again so why chance it?

    #4. Brake fluid eats paint. DAMHIK. :rofl:
     
    w3srl, Aug 8, 2009
    #2
  3. Aug 9, 2009
    dohc281

    dohc281 It is what it is.

    Laurel Springs, N.J.
    Joined:
    Dec 30, 2004
    Messages:
    605
     
    dohc281, Aug 9, 2009
    #3
  4. Aug 9, 2009
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    Yes... That is typically the way it's done, and the way I've always done it.
     
    Patrick, Aug 9, 2009
    #4
  5. Aug 12, 2009
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
    Joined:
    Aug 3, 2003
    Messages:
    9,845
    I've never found any need to bench-bleed these old 'single' master cylinders, only on dual systems.

    I would bleed the farthest wheel first.
     
    PeteL, Aug 12, 2009
    #5
  6. Aug 14, 2009
    alexa

    alexa New Member

    Joined:
    May 1, 2008
    Messages:
    40
    There is a banjo fitting at the end of the Master Cylinder which uses a couple brass washers on either side to seal it. I never have much luck getting this to seal the first time. Only guidance I can give is just to keep trying.....
     
    alexa, Aug 14, 2009
    #6
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