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Pinion Nut Size *help* update

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 1979Jimmy, Jul 22, 2002.

  1. 1979Jimmy

    1979Jimmy 1/2 ton status

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    Well took off the driveshaft last night and went to remove the pinion but no ratchet i had was big enough. I didnt measure it. I was sondering if you guys knew the size of the pinion nut on a dana 44 so i can pick up the apropriate size ratchet on the way home. Thanks.

    update: Ok now i cant get the dan thing off I locked the hubs and chalked the wheels but the nut wont budge. am i not doing something i just bathed it in penetrating oil and ill try in a bit. also what does the pinion nut need to be torqued too?
     
  2. smack

    smack 1/2 ton status

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    Re: Pinion Nut Size

    I'm pretty sure it's and inch and a quarter.
     
  3. Leadfoot

    Leadfoot 1/2 ton status Premium Member

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    Re: Pinion Nut Size

    it may be 1 1/4" but I think I remember 1 5/16" too. Let us know what you find. Thanks.
     
  4. Executioner

    Executioner 1/2 ton status

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    Re: Pinion Nut Size

    Lets give 1 and 1/8 a try !
     
  5. 45acp

    45acp 1/2 ton status

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    Re: Pinion Nut Size

    My D60 (D44?) is 1.3125 (1 5/16) and requires a standard socket not a heavy wall or impact socket because it is to thick.
     
  6. 1979Jimmy

    1979Jimmy 1/2 ton status

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    Re: Pinion Nut Size

    Good call, 1 and 1/8 fit. I found that out after a few trips to the hardware store. I just dont have sockets that big. If i just habd tighten the nut when i put it back on will i do any damage or does it have to be torwued to a specific number?
     
  7. Leadfoot

    Leadfoot 1/2 ton status Premium Member

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    Re: Pinion Nut Size

    Ex, do you know if all pinion nuts are the same 73-87 GM? I am almost positive I had to use a 1 5/16", but then again that might have been on the t-case (non-pinion) end. Wouldn't be the first time I was wrong.
     
  8. 1979Jimmy

    1979Jimmy 1/2 ton status

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    Re: Pinion Nut Size

    the 1 and 1/4 was way to big....
     
  9. BowtieBlazer

    BowtieBlazer 1/2 ton status

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    Re: Pinion Nut Size

    1 1/8 fit my pinion nut on both front and rear axle and my NP 208 front yoke
     
  10. 1979Jimmy

    1979Jimmy 1/2 ton status

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  11. Twiz

    Twiz 1/2 ton status

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    Here's a sure fire bet to get the pinion nut back on exactly the same as you took it off. (I assume your changing the pinion seal?)

    Mark the pinion shaft, nut and yoke.
    Use something that will not rubb off or cleaned off.
    Also, count the threads that stick out past the nut to make sure get the nut all the way on.

    When you reassemble it, simply align the marks, makeing sure you have the same amount of threads showing as before.

    The pinion nut is a style of locking-nut, it will require some effort to losen, and probably be hard to turn threw out removeal and installation.
     
  12. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    Yo dude, I hope you've got a good 1/2 or 3/4" breaker bar and a long ass cheater pipe. I rebuilt a 12 bolt recently, and had a hell of a time with the pinion nut. Was even worse cause it was sittin loose on the ground and not bolted to the truck. I had to use a 1/2" breaker bar with about a 4 foot pipe on the end...It didn't break loose till I jumped on the damn bar a few times. If you still cant get it, maybe try stickin the socket on the nut and bracin the end on the ground and roll the truck forward....That might break it loose, I've never tried it, but maybe it's worth a shot. /forums/images/icons/grin.gif
     
  13. BowtieBlazer

    BowtieBlazer 1/2 ton status

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    electric impact had a little trouble but zipped mine off pretty well
     
  14. Leadfoot

    Leadfoot 1/2 ton status Premium Member

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    Re: Pinion Nut Size

    Thanks! I must be smokin' the good stuff again...... /forums/images/icons/tongue.gif
     
  15. 1979Jimmy

    1979Jimmy 1/2 ton status

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    thanks guys, last night all i was doing was rolling the truck up onto the tire chalks. lol /forums/images/icons/laugh.gif
     
  16. Executioner

    Executioner 1/2 ton status

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    Re: Pinion Nut Size

    Not sure about 79-87, but yes 73-79 the transfer case output
    yoke nut is 1 AND 5/16 !
     
  17. KRAZIE87K5

    KRAZIE87K5 1/2 ton status

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    I couldnt get mine off either... and ended up at a local drive line shop. They used a 3/4" drive impact rated at 750ft/lbs! Took this guy all he had to hold it in one place when he pulled the trigger! I used anything I could find, but I could break it loose. Good luck to ya!

    -Dan
     

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