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discs/dana 30 problem

Discussion in 'Early CJ5 and CJ6 Tech' started by bkd, Nov 26, 2007.

  1. Nov 26, 2007
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
    Joined:
    Apr 29, 2007
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    3,294
    so I bled the brakes on the 6 today, rolled it out on the driveway to fire it up. When I went to roll it back in it wouldn't budge. I gave it an hour then pushed it in but it was tuff. Jacked the front end up and both front wheels were difficult to rotate. I hit the brake pedal and they froze up solid again. Line loc is in the off position. What should I be looking for? Don't even know where to start:(
    Jim S.
     
    bkd, Nov 26, 2007
    #1
  2. Nov 26, 2007
    sdcj6

    sdcj6 Sponsor

    San Diego
    Joined:
    Sep 25, 2002
    Messages:
    366
    Release pressure by loosening bleeder screw on caliper.
    Possible problems:
    master cylinder
    brake hoses (I have had this one)
    stuck pistons in calipers
    stuck calipers on mounts
    Is this a new Mico or used? Could be the problem, did you plumb it to the disks or the rear drums?
     
    sdcj6, Nov 26, 2007
    #2
  3. Nov 26, 2007
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
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    Apr 29, 2007
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    3,294
    yea there was a bunch of crap plugging the bleeders when I started....mico was used, plumbed to the front discs
    Thanks, Jim S.
     
    bkd, Nov 26, 2007
    #3
  4. Nov 26, 2007
    66cj5

    66cj5 Jeep with no name

    NorthWest Indiana
    Joined:
    Sep 10, 2003
    Messages:
    2,084
    sounds like the line lock isn't operating correctly to me.
     
    66cj5, Nov 26, 2007
    #4
  5. Nov 26, 2007
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
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    Apr 29, 2007
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    yea I layed awake last night thinking about it. When I bled the brakes we had a hard time w/ the front, when I went to bleed the LL I got nothing. I just assumed the bleeder was plugged. I think I'll go by the FLAPS and get a new bleeder and try it again tonight, seems the easiest place to start.
    Thanks, Jim S.
     
    bkd, Nov 26, 2007
    #5
  6. Nov 26, 2007
    Posimoto

    Posimoto Hopeless JEEP Addict

    Minden, Nevada
    Joined:
    Aug 7, 2003
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    4,538
    One more thing to check is for a slight amount of freeplay in the brake pedal. I had mine adjusted too tight and it wasn't allowing the piston to return all the way so it didn't release the pressure.
     
    Posimoto, Nov 26, 2007
    #6
  7. Nov 26, 2007
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
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    good point, I'll look at it tonight.......Thanks, Jim S.
     
    bkd, Nov 26, 2007
    #7
  8. Nov 26, 2007
    jzeber

    jzeber Well-Known Member 2022 Sponsor

    Morgan Hill, Ca
    Joined:
    Nov 15, 2003
    Messages:
    3,327
    I had a friend that did not remove the residual valve in his MC on a 72' when he converted to disc brakes. The brakes would get progressively tighter until the vehicle would not move. He could release the pressure and then drive a while until it would do it again.
    Just my $.02!
     
    jzeber, Nov 26, 2007
    #8
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