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Loose Lug Nuts After Disc Brake Conversion

Discussion in 'Intermediate CJ-5 and CJ-6 Tech' started by mikemac61, Sep 7, 2018.

  1. Sep 7, 2018
    mikemac61

    mikemac61 New Member

    Georgia
    Joined:
    Sep 5, 2018
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    6
    I have a 73 cj5 and I just completed a disc brake conversion on the front. I'm still shaking it out but noticed today that my lug nuts loosened on the left front. I installed a corvette type mc and bias valve as well. Like I said, I'm still working out the kinks but I've never seen the lug nuts go loose like that. Thoughts?
     
  2. Sep 7, 2018
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

    Tantallon, Nova...
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    What sort of wheels & nuts are you running?

    Did you change the studs when you converted?
     
  3. Sep 7, 2018
    mikemac61

    mikemac61 New Member

    Georgia
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    Sep 5, 2018
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    yes, I changed the studs...15" alum wheels...would the studs possibly stretch a little after initial install?
     
  4. Sep 7, 2018
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

    Tantallon, Nova...
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    Your wheels- do they use flat shouldered lug nuts or tapered? If flat shouldered did you grease the studs before putting the lug nuts on?
     
  5. Sep 7, 2018
    mikemac61

    mikemac61 New Member

    Georgia
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    no, they're tapered...it appears one of the wheel weights was just slightly rubbing the caliper mount bracket. Seems odd but I guess that little bit of mechanical interference could have caused it.
     
  6. Sep 7, 2018
    Daryl

    Daryl Sponsor Sponsor

    Bonney Lake, WA
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    Or your studs were not quite all the way pressed in.
     
    dnb5853 and timgr like this.
  7. Sep 7, 2018
    mikemac61

    mikemac61 New Member

    Georgia
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    Sep 5, 2018
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    good point...re-torqued today and drove around after getting the balance weights moved and it appears to be ok...just keep an eye on it for a while I guess...
     
  8. Sep 8, 2018
    47v6

    47v6 junk wrecker! Sponsor

    Washington DC.
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    Check the run out of your disks. If greater than .005, it can cause problems. I had issues with lug studs loosening because of it.
     
  9. Sep 8, 2018
    timgr

    timgr Jeepin' Nerd Sponsor

    Medford Mass USA
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    +1.
     
  10. Sep 8, 2018
    Focker

    Focker Ran when parked... Runs while moving. Staff Member Sponsor

    Tri-Cities WA
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    Aug 18, 2014
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    What Daryl said.

    Also, you should always re-torque your wheels after 20 or so miles, especially if running aluminum wheels.
     

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