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torque on 5/8 u bolts

Discussion in 'The Garage' started by ryan22re, Sep 13, 2005.

  1. ryan22re

    ryan22re 1/2 ton status

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    what should i torque 5/8 u bolts to? i was thinking 100 ft-lbs. forgot to ask the guys at the spring shop.

    ryan
     
  2. MarcS

    MarcS 1/2 ton status

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    95-130 ft-lbs in my Tuff Country spring install manual.
     
  3. 89GMCSuburban

    89GMCSuburban 1/2 ton status

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    110 in the Skyjacker manual
     
  4. trailblazr81

    trailblazr81 1/2 ton status

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    Ive done this a few times... I just go crazy with a big mutha of an impact wrench!!! Ive had 'em loosen up on me once...Wasnt pretty. Broke off the centering pin that holds the leaves together and the axle slid back and put the wheel into the fender. Luckilly I had some mud flaps on at the time so it didnt shred my tire while on the freeway!! Ever since then I make sure they are tight as hell!!! Had to tow it home about 50 miles. Double check and make sure those U-Bolts are tight!!!!
     
  5. MarcS

    MarcS 1/2 ton status

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    Oh yeah, a good point. Re-torque them after putting some milage on it.
     
  6. 89GMCSuburban

    89GMCSuburban 1/2 ton status

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    Yeah, check at least every tank of gas. Mine kept torquing down for about 5,000 miles while they stretched and they stay at 110 comfortably now, but I still check every oil change.
     
  7. spearchucker

    spearchucker 1/2 ton status

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    I know that should be done after changing suspension parts, but why is it that when you buy a new vehicle you don't have to keep retorquing the ubolts. :confused:
     
  8. ryan22re

    ryan22re 1/2 ton status

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    why dont you have to break in the engine or the diffs? i know that nissan has a break in for their diffs, but never heard of any other manufacturer saying that.

    ryan
     
  9. trailblazr81

    trailblazr81 1/2 ton status

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    Well I would still think a new vehicle would need to break in the engine. I would treat it as such. The diffs... I dunno. Dont when you rebuild an axle or chang the ring and pinion just drive it around for a bit then let it cool and be done?? My parents just bought a new vehicle and they have to bring it back to dealer after 1000 miles to be checked over. Maybe that has something to do with breaking in stuff...
     

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