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problems with spring u-bolts

Discussion in 'Early CJ5 and CJ6 Tech' started by oddfirejeeper, Apr 28, 2013.

  1. Apr 28, 2013
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
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    May 5, 2004
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    ok, i finally got around to installing my re-built dana 44. About 6 months or so i had some u-bolts made for my axles. everything was great except that the threads are not long enough. After a few choice words and finished being hard on myself i decided to purchase a die and make more threads on the bolts. Well, as with everything else there is a snag. It seems like the bolt shoulder where i am making the new threads is ever so slightly smaller than where the other threads are. So it seems like the threads are not as deep as the others.
    Should or could i use these or should i just get new spring u-bolts? The place i had make them will not take them back because they were custom made to order (i'm assuming right now until monday). i'm worried that there won't be enough thread to get it good and tight and stay tight.
    Here are some pictures as i know everyone likes those.
    [​IMG]
    rear 3:73 with trac-loc axle out.
    [​IMG]
    re-built 4:27 with powr-lok almost in.
    [​IMG]
    And picture of my storage unit. oops i mean my jeep
     
  2. Apr 28, 2013
    wheelie

    wheelie beeg dummy 2024 Sponsor 2023 Sponsor

    York, PA
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    Can the place that made them "re-thread" them for you, to add more threads? I had some made for my truck and, I don't recall that it was terribly expensive. I would not take any chances with my u-bolts though. They have to be right, whatever it takes. I also don't recall there being a shoulder on mine but, I may be wrong about that. Seems to me they could lengthen the threads bit, if not, have new ones made. Safety, ya know?
     
  3. Apr 28, 2013
    Mike S

    Mike S Sponsor

    Cameron Park Ca.
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    Sounds like the existing threads were rolled, not cut.

    Can you get away with using some washers to position the nuts so they stay on the threaded section?
     
  4. Apr 28, 2013
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Sep 21, 2002
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    You say they were custom made, did you tell them how long to make the threads or give them an old u-bolt to copy?
     
  5. Apr 28, 2013
    PeteL

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

    Hills of NH
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    I agree with Mike S.

    Cut threads are not as strong as rolled in any case. Use spacers or new u-bolts, IMHO.
     
  6. Apr 28, 2013
    Mike S

    Mike S Sponsor

    Cameron Park Ca.
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    Gosh, I love to hear that :D:D

    Thanks Pete.
     
  7. Apr 28, 2013
    JAlves

    JAlves Sponsor

    Yuba City, CA
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    Oct 8, 2009
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    And while you are out getting new bolts, buy a set of stands before one of those straps break and you get crushed.
     
  8. Apr 28, 2013
    wheelie

    wheelie beeg dummy 2024 Sponsor 2023 Sponsor

    York, PA
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    Mehhhhh.:D:D
     
  9. Apr 28, 2013
    PeteL

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

    Hills of NH
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    I agree with JAlves too... ;-)

    The straps are strong enough, but you have all your eggs in one basket - or on a single hook. You are betting your life on a bunch of possibilities.
    I do a lot of heavy lifting in my work. Your primary set-up should always have a redundant back-up.

    As we say in fire/rescue, no one calls us when they do something smart...
     
    Last edited: Apr 28, 2013
  10. Apr 28, 2013
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
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    Last edited: Apr 28, 2013
  11. Apr 29, 2013
    duffer

    duffer Rodent Power

    Bozeman, MT
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    O'Reilly's has the right ones also, complete with hardened washers and nuts. Unless you have a very non-standard spring arrangement, best and cheapest to just buy them off-the-shelf.
     
  12. Apr 29, 2013
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
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    i'm going to call there tomorrow as it was crazy busy at work. didn't have time for lunch either. it wasn't expensive to have them built and i agree it has to be right. after all it's the axles they are holding on.
     
  13. Apr 29, 2013
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
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    mike, that is what my friend said too on the rolled not cut threads. and i would have to use about an inch worth of washers to make it work.
     
  14. Apr 29, 2013
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
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    i gave them the dimensions that was in my jeep catalog and i may have told them the length but not the threaded length. i should have just brought down the old ones from the dana 44 and had them copy them
     
  15. Apr 29, 2013
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
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    you think an inch worth of spacers would be good? i would think it would move around more like that?
     
  16. Apr 29, 2013
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
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    believe me i was not under that while it was up. i only drug the axle out once everything was disconnected as a unit then sat it down on blocks.
     
  17. Apr 29, 2013
    PeteL

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

    Hills of NH
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    An inch sounds like too much. They would stick down and hang up on rocks.
     
  18. Apr 29, 2013
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
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  19. Apr 29, 2013
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
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    yeah i thought it to be a little excessive
     
  20. Apr 29, 2013
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
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    now one thing i forgot to mention is i have a lift kit on my jeep. it only has 3 or 4 leafs and not the massive amount of leafs stock was. i'm assuming that might make a difference even though it has had the lift on there for quite some time.
     
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