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Transfer Case Drive Gear

Discussion in 'Early CJ5 and CJ6 Tech' started by tripilio, Jan 27, 2020.

  1. Jan 27, 2020
    tripilio

    tripilio Proud American!

    Miami
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    I need to torque the transfer case drive gear after mating my T90 to my D18. Service manual calls for 130 to 170 lb-ft. Where should I hold (without destroying anything) to torque that nut to such high value?
    Thanks! IMG-20200126-WA0010-1032x581[1].jpeg
     
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  2. Jan 27, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member 2020 Sponsor

    Denver, CO
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    I think I strapped mine down around my benchtop and had it set-up so the torque wrench handle was out in front of the bench and around the 4 oclock position so that it the applied force was downward and the passenger side of the TC would be levered into the bench. You could also bolt it to the engine first and do it underneath - I've done it that way as well, but its a bit more goofy to install an OD if that is the case - but not a huge issue.
     
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  3. Jan 27, 2020
    ITLKSEZ

    ITLKSEZ Volvophilic

    Post Falls, ID
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    I wouldn’t be too concerned about damage, as long as you don’t mar any critical surfaces with clamping pressure. You won’t apply forces anywhere near what it’ll see in everyday use.
     
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  4. Jan 27, 2020
    Fireball

    Fireball Member 2020 Sponsor 2019 Sponsor

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    If you've got the top cover off the transmission, you can put it into two gears at once to keep it from turning.
     
  5. Jan 27, 2020
    tripilio

    tripilio Proud American!

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    I meant to hold it so it would not spin when I torque it. I have to transmission cover installed, but I guess I could remove it and lock it there. Any other alternative?
     
  6. Jan 27, 2020
    Fireball

    Fireball Member 2020 Sponsor 2019 Sponsor

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    You could try a large pipe wrench on the rear output flange with the transfer case in High. Or even bolt a large bar or 2x4 to it using the flange bolt holes.
     
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  7. Jan 27, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member 2020 Sponsor

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    kind of realized that after fireball posted his comment....I did the transmission into 2gears so it locked in place. You could put a clamping mechaninsm on the output yoke of the TC (or front yoke if its in 2wd)....I think I used a block of wood and a pipe wrench on the output yoke...of if its in place under the jeep, you could mount the driveshaft and block the wheels....If I did it today, I would probably get a second set of hands and have someone put a yoke wrench on the output yoke...I made one when I did the locker install:
    Fino's 1970 Mini Build Thread
     
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  8. Jan 27, 2020
    tripilio

    tripilio Proud American!

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    Ok, I will use my yoke tool on the TC, then. That sounds better. Thanks a lot!(y)
     
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  9. Jan 27, 2020
    Twin2

    Twin2 not him 2020 Sponsor 2019 Sponsor

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    believe it or not
    I just stuff a rag in between gears
     
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  10. Jan 27, 2020
    Fireball

    Fireball Member 2020 Sponsor 2019 Sponsor

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    It would never occur to me to do that, but thinking about it... of course that will work. Clever, I like it!
     
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  11. Jan 27, 2020
    ITLKSEZ

    ITLKSEZ Volvophilic

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    That’s a motorcycle axle adjuster trick. :sneak:
     
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  12. Jan 27, 2020
    tripilio

    tripilio Proud American!

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    Enough to hold over 130 foot pound?
     
  13. Jan 27, 2020
    Twin2

    Twin2 not him 2020 Sponsor 2019 Sponsor

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    and a few other things . used to change gears on big production machines

    Enough to hold over 130 foot pound?
    yes just ball/roll rag up before getting it stuck in gears . and you have to turn things backwards to remove rag
     
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  14. Jan 27, 2020
    Keys5a

    Keys5a Sponsor

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    I've used a thick piece of canvas stuffed into the gear mesh many times to break this nut loose or tighten it, basically the same idea that Ron suggested.
    That case looks like it cleaned up nice!
    -Donny
     
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  15. Jan 28, 2020
    tripilio

    tripilio Proud American!

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    Thanks, Donny!
     
  16. Feb 12, 2020
    juffer

    juffer Juffer 2020 Sponsor 2019 Sponsor

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    I cant beleve it needs that torgue. It just has to hold the gear in place. The gear it self is on a spline shaft.
     
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  17. Feb 12, 2020
    tripilio

    tripilio Proud American!

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    I know! And on top of that it has a cotter pin. Maybe it helps to reduce backlash on the TC?
     
  18. Feb 12, 2020
    juffer

    juffer Juffer 2020 Sponsor 2019 Sponsor

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    I did put the transmission in two gears the same time so that locked the transfer shaft. I just torqued it normal. I locked the thread with a punch. so it wont get loose. Holds for a year now. Just checked it last month. I dont have a cotter pin???

    It does not affect the back lash
     
  19. Feb 12, 2020
    tripilio

    tripilio Proud American!

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    Mine does...
    2020-02-12_15-53-40.jpg
     
  20. Feb 12, 2020
    termin8ed

    termin8ed I didn't do it Staff Member

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    On a 62te trans one of the side transfer gears gets torqued to 200 ft/lbs and then the nut is staked. If you dont stake it the nut will loosen and drill thru the side cover.
    Damhik...:whistle:
     

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