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Soft, then hard brake pedal

Discussion in 'Early CJ5 and CJ6 Tech' started by oldyellercj, Aug 19, 2006.

  1. Aug 19, 2006
    oldyellercj

    oldyellercj SUPER DAVE

    No. CAlifornia
    Joined:
    Feb 23, 2006
    Messages:
    44
    in the morning on the way to work the brake pedal is just right, stops great the longer I drive it the harder the pedal gets, to the point of stoping the Jeep if I let go of the gas when I get home (7miles). It has what I call power brakes(?) I blead the booster and it relieved the pressure now the pedal is mushy but the brakes work...this is what I have for (power) brakes

    :flag: :beer:
     
    oldyellercj, Aug 19, 2006
    #1
  2. Aug 19, 2006
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
    Messages:
    12,382
    That's a hydro-vac, an add on booster unit. One thing you could check is the master cylinder push rod adjustment, you should have tiny bit of free play. Other wise fluid gets trapped and every time you use the brakes more gets trapped if the m/c pistons don't return fully when you let off the brakes.
     
    Glenn, Aug 19, 2006
    #2
  3. Aug 19, 2006
    Posimoto

    Posimoto Hopeless JEEP Addict

    Minden, Nevada
    Joined:
    Aug 7, 2003
    Messages:
    4,539
    I had this problem exactly. Not enough slack in the push rod so the piston wasn't returning far enough to release the pressure in the system. Put in a little slack and everything was fine.
     
    Posimoto, Aug 19, 2006
    #3
  4. Aug 20, 2006
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    Yup, sounds like the pushrod is too tight...
     
    Patrick, Aug 20, 2006
    #4
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