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Detroit Locker 12 Bolt Q

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by RedDwarf, Nov 13, 2001.

  1. RedDwarf

    RedDwarf 1/2 ton status

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    What tool do I need to open up a 12 Bolt Detroit? I may have a chance to get one but I want to open it up to check it for broken pieces. What do I need to take with me?
     
  2. Ryan B.

    Ryan B. 3/4 ton status GMOTM Winner

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    All that you will need is an allen (hex wrench) of the appropriate size, to get to the c-clips and slide the axles out.
    So bring an assortment of your allens.
    There shouldn't be any broken pieces to see. (no spider gears or clutches if it's a detroit c-locker for a 12-bolt rearend)
    And then of course the 4 bolts for the caps that hold the carrier in place. ...what are they 5/8" or 11/16"

    Ryan B
     
  3. RedDwarf

    RedDwarf 1/2 ton status

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    The locker will be out of the vehicle. What I need to know is What tool(s) I need to take the two halves of the Detroit Carrier apart so I can inspect the internal gears/springs and look for broken pieces or chipped parts.

    Thanks,
    Red
     
  4. Executioner

    Executioner 1/2 ton status

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    Its a trade secret, not too many know.
    Maybe you can get it out of Detroit/tractec/dyneer if you ask reall sweet.
    Good luck
     
  5. dogman

    dogman 1/2 ton status

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    whooo, hold on! inside a Locker, I remember some warnings about the spring inside that locker, If I remember correctly there was a set of holes that you put long bolts threw to unload the spring pressure slowly. when you take it apart.
    I can look tonight at the my detroit manual, its at home.

    I ain't stupid, just old..
     
  6. RedDwarf

    RedDwarf 1/2 ton status

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    Thanks Dogman.

    Executioner, you have 1097 posts, did you really need to post that [​IMG]
     
  7. Ryan B.

    Ryan B. 3/4 ton status GMOTM Winner

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    Alright dude, here's the scoop.
    Dogman's my dad and he found the Detroit Locker Owners manual, so I scanned it and posted it on my site for you or anyone else who cares to see the sections are for the 12 bolt c-locker.

    Dogman is right, (thats my dad) Straight from the owners manual- "CAUTION: Failure to use a restraining bolt or some other restraining means when seperating the differential case halves can cause injury, no spin differentials have compressed springs. Failure to observe these measures can cause part failure, or result in a mishap which can cause property damage, personal injury, even death."

    For the instructions on how to disassemble a locker and precautions, here:
    <a target="_blank" href=http://communities.msn.com/Ryans1972Blazer/detroitlocker.msnw?Page=1>http://communities.msn.com/Ryans1972Blazer/detroitlocker.msnw?Page=1</a>
    ...and if you can't enlarge this big enough or print it or something, just let me know and I can email these to you real easy.
    Ryan B
     
  8. dogman

    dogman 1/2 ton status

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    thanks Ryan for scan'n that last night.
    RedDwarf;
    your welcome, so be careful.
    If that doesn't work, I can Mail or fax a Copy to you&gt;PM me.
     
  9. RedDwarf

    RedDwarf 1/2 ton status

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    Hey, thanks guys! Y'all make a great team!

    I appreciate the help.
    Red
     
  10. dogman

    dogman 1/2 ton status

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    cool.
    could ya read enough of that manual to tell that you may want a rearend builder to take a look inside that locker for ya.. just the fact that its a press together thing I wouldn't do it.
    the price of a new locker vs/used +$ the set-up. it may be worth the peace of mind to go new.
    if your changing the ring and pinion too, have it set-up by a rear end shop.
    good luck!
     

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