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12bolt pinion torque

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Impex, Jan 17, 2001.

  1. Impex

    Impex 1/2 ton status

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    My rear pinion seal was bad, leaking all over so today when im changing it the bolt on the pinion came off with my fingers! Since it was so loose i could not mark it so i would know where to stop tighting it. so what is the torque for this bad boy?

    [​IMG] [​IMG]
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    there is no torque setting that I know of for your situation. They are torqued on to X foot pounds when new, then when you remove them, like you said, you are supposed to mark the threads. I had two loose pinion nuts on my trucks though, one I ended up replacing the yoke. I didn't do it "by the book" however I didn't have any problems. Just left the truck on the ground, parking brake on, and took the breaker bar and wrenched on it till I thought it was good. Never leaked again, nor did it wear out. BTW, my leak was BECAUSE the nut was loose, not cause the seal was bad...much easier fix : )

    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://yeagerd.home.mindspring.com/index2.html>http://yeagerd.home.mindspring.com/index2.html</A>
     
  3. Executioner

    Executioner 1/2 ton status

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    Someone is right, it could be 100 lbs./ft. , or it could be 250 lbs./ft.
    Do you feel lucky today ?
    If you want to do it right, you need to disasemble the rear end, at least remove the axle shafts.
    Please understand Pinion Bearing Preload !
    Good luck
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    better yet DON'T learn about pinion bearing preload, 'cause then you'll wonder if it's gonna come apart on you all the time : )

    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://yeagerd.home.mindspring.com/index2.html>http://yeagerd.home.mindspring.com/index2.html</A>
     
  5. 1990K5

    1990K5 1/2 ton status

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    you have a crush sleeve in the pinoin odds are that crush sleeve was already "crushed" which requires x amount of ft.pounds, i would just use a breaker bar and snug it back up not really putting the monkey grind on it.
     

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