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Torque for leaf spring to axle u-bolts??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Waxer, Jun 11, 2002.

  1. Waxer

    Waxer 1/2 ton status Author

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    It's been a while and I was wondering if anyone knew offhand what the torque setting was for these. I installed my front zero rates yesterday with new u-bolts front/rear from ORD. I currently have the front torqued down to 90ft lbs. but I'm curious as to what the correct torque setting is. Thanks in advance.
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I think it's more like 125-140...90 seems a bit low.

    Rene
     
  3. 84Sierra

    84Sierra Registered Member

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    I think it's 150. I'll check when I get home tonight.
     
  4. jberg62

    jberg62 1/2 ton status

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    I too would say 150 ft. lbs.
     
  5. chevyfumes

    chevyfumes Court jester

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    Watch for the muzzleflash!
    My directions called for 90-110...
     
  6. Waxer

    Waxer 1/2 ton status Author

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    Thats what came to mind when I installed my new suspension from ORD over a year ago. Somewhere around 90 or just a little bit higher.
     
  7. Boss

    Boss 1/2 ton status Author

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    It's definately 150lb.
    Boss
     
  8. rampage

    rampage 1/2 ton status

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    The Chevy manual calls for 140.
     
  9. Stoopalini

    Stoopalini 1/2 ton status

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    Will over tightening the U bolts cause problems?

    I just tightened mine down as much as I could. Will this cause any issues for me?

    Now, over tightning the leaf spring eye bolts I can see causing problems, but U-bolts?

    Thomas.
     
  10. 70~K5

    70~K5 1/2 ton status

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    From the Chevy service manual... Tighten diagonally opposite nuts to 40- 50 ft. lbs. Then tighten all nuts as shown to specifacations which for a C- K truck is 140 ft lbs. Also the caption to the pic says... NOTE: "U" BOLTS MUST BE LOCATED AROUND THE AXLE TUBE SO THE LEGS PASS THE SPRING SEAT WITHIN .060. And it's all caps like I typed it. /forums/images/icons/shocked.gif
     
  11. trailblazer87

    trailblazer87 1/2 ton status

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    If you over tighten theonly problem that could arise is breaking your U-bolts, and you would notice this immediatly! You could possibly crush your spring perches but this is unlikely, it would also limit the amountthat your springs could flex but this would be marginal.
     
  12. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    Mine are IR244 tight.
     

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