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SM 465 rebuild/overhaul

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Jmask, Oct 31, 2002.

  1. Jmask

    Jmask Registered Member

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    Has anyone done this?? I am about to overhaul mine and I have the kit and all, but I cannot find manuals or instructions on what to look for while Im there. I'll be doing the xfer case too. I have thought about buying one at the boneyard, but you never know what your getting and I wont spend 850 for a rebuilt when I can do it myself. Any tips? Any help is appreciated
    Thanks /forums/images/graemlins/grin.gif
     
  2. TopOff

    TopOff 1/2 ton status

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    Peterson's 4 wheel drive mag just had an article on this a couple of months ago. There is shop in LA area (I think) that puts a sleeve between 3rd and 4th gears. Apparently the pin between these gears tend to wear and third or fourth gears tend to pop out.

    That about all I recall.
    Good luck.
     
  3. imiceman44

    imiceman44 1 ton status

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    ...Yeah if you don't have that magazine, I could scan it for ya.
     
  4. Jmask

    Jmask Registered Member

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    Yes please scan that article and send it to jmask99@yahoo.com
    much appreciated. I have had a hell of a time trying to get service manuals/info on the sm465.
     
  5. imiceman44

    imiceman44 1 ton status

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    I have yet to find a book or a source that has those, but this article will show you the weeknesses in it and point you to areas of concern, it would be no more than a guide to things to do.
    Actual instruction don't exist in this article.
    I will scan it for ya tomorrow.
     
  6. Waxer

    Waxer 1/2 ton status Author

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  7. m j

    m j 1/2 ton status

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    I think that article is a bunch of BS.\

    first of all, they call the gears on the countershaft 1 through 4.
    4th is direct and therefore is NOT on the countershaft.

    secondly, their story that the 3rd gear popout is because the counter gear snapring can break is pretty fishy to me.
    the shifter or the shift clutches never come in contact with the countershaft so how would a loose counter gear knock the shift clutch from the speed gear?

    IMO the popout is a result of the wear on the shift forks preventing full engagement of the shift clutches.

    that article is full of nice pictures but I think it would be best to ignore the text and captions.
     
  8. m j

    m j 1/2 ton status

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  9. TopOff

    TopOff 1/2 ton status

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    Awesome, Thanks M_J!
     
  10. BigOrange90Jimmy

    BigOrange90Jimmy 1/2 ton status Premium Member

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    mj you are quite the man!
     

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