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  • brakes

    I am having a problem with brakes. I have totally rebuilt the system on a '52 Commander. There are no leaks. I have bled the system every which direction with a pressure tank. All 4 cylinders are rebuilt and the Master is new. I have about a 2 inch pedal and it will pump up to about 4 inches, but while setting overnight there will be no pedal by morning, but it will pump to 4 again and hold for quite a while....problem ??.......Brad

  • #2
    Did you use dot 5 brake fluid? Everything I have read says not to use a pressure bleeder with dot 5 because this fluid attacts air and it is very difficult to get the air bubbles out.

    Butler, PA
    63 Avanti
    Butler, PA
    63 Avanti R1 R2899


    • #3
      I used 3 as stated on the box for the new master cylinder...thanks...Brad


      • #4
        Be sure that you have the M/C to pedal rod adjusted properly! Read the shop manual, there should be minimal play before you start to feel resistance. Start there. Also sounds like "maybe" a bad M/C, but I'd check the adjustmant first.

        GO COLTS



        • #5
          I replaced the old cleaned rebuilt master cylinder with a new one and it doesn't act much better......Brad