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Stripped Trans To Tc Bolt Threads.. How Would You Fix It?

Discussion in 'Early CJ5 and CJ6 Tech' started by aekdbbop, Jun 30, 2017.

  1. Jun 30, 2017
    aekdbbop

    aekdbbop Member

    TN
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    Jul 31, 2014
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    So this little guy is stripped and is keeping the gasket from sealing completely.
    [​IMG]

    I'm thinking the easiest way to fix this is going to remove the TC leaving the trans in place.

    Drill and tap the hole

    Would you use a die? Or a helicoil?

    Pretty PO'd about having to do this..

    Just want your thoughts.
     
  2. Jun 30, 2017
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    I believe a Helicoil would be the better choice.
     
  3. Jun 30, 2017
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
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    JB Weld. :D
     
  4. Jun 30, 2017
    Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Virginia Beach, VA
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    x2 helicoil
     
  5. Jun 30, 2017
    Daryl

    Daryl Sponsor

    Bonney Lake, WA
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    The only way to actually fix it is a helicoil. Very easy job, just time consuming to drop the TC. You will have plenty of lubricant for the drill and tap.
     
    DHill78 likes this.
  6. Jun 30, 2017
    tarry99

    tarry99 Member

    Northern California
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    Helicoil X3..........and doing it while in the Jeep is OK , while laying on your back.........Except..................you'll only get one chance to get the over-sized hole drilled straight and the helicoil tap started straight............so think long and hard about how you can accomplish that before you turn on your trusty little drill..............perhaps a fixture as a guide that helps the alignment?..............and keep in mind that the hole may go through into the oil inside the case so a guide as to depth is also a consideration so that shavings don't get inside..................just saying from experience as the next step if not done correctly can really add to the pain.

    [​IMG]
     
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  7. Jun 30, 2017
    colojeepguy

    colojeepguy Colorado Springs

    At the foot of...
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    Maybe a longer bolt?
     
  8. Jun 30, 2017
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Pulling a 3-speed trans and transfer case from a CJ is not that hard. Once the transfer case is down, the transmission is even easier. Just saying... With it out, you could pay your local automotive machine shop to install the Helicoil. Ask for a quote.
     
    tarry99 likes this.
  9. Jun 30, 2017
    jeepstar

    jeepstar Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sheboygan
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    Helicoil. I did one on my engine a few months backed, worked slick as snot.
     
  10. Jun 30, 2017
    Daryl

    Daryl Sponsor

    Bonney Lake, WA
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    It literally is a 5 minute job once the TC is down. Drill, tap, insert and put it all back together.
     
  11. Jun 30, 2017
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    All well and good, but the set-up cost for making the Helicoil repair is not nothing. You'll need to buy a 3/8"-16 HeliCoil kit (guessing it's that size, ca $20) plus a drill bit (I think it needs an X letter drill, likely $10 from McMaster-Carr). So your initial cost will be on the order of $30-50. Then you'll have to do the work yourself... The bolt is a common size, and your local shop can probably do it for less than the cost of the parts and tooling, if you bring them the transmission, drained of oil. The downside is that you won't have the tools when you are done, but how many times do you expect to need the tooling?

    Amazon.com: Helicoil 5521-6 3/8-16 Inch Coarse Thread Repair Kit: Automotive
     
  12. Jul 4, 2017
    sterlclan

    sterlclan Member 2022 Sponsor

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    helicoil for 3/8?get the kit from napa, drill tap and coils,about 30 bucks. if you keep the jeep more than likley will run into a stripped 3/8 bolt somewhere along the way.
     
  13. Jul 4, 2017
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    Yup, I seem to go through those things quicker than {fill in favourite saying}

    H.
     
  14. Jul 4, 2017
    sterlclan

    sterlclan Member 2022 Sponsor

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    broken,stripped or lost seem to be the only kind of bolts i get....
     
  15. Jul 10, 2017
    aekdbbop

    aekdbbop Member

    TN
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    Helicoil was a success! I always get nervous tapping threads for some reason.

    Now, do I use the gasket that came with the trans rebuild kit, or use some gasket maker? What will be better for leak stoppage?
     
  16. Jul 10, 2017
    Vanguard

    Vanguard Take Off! Staff Member

    Vista, CA USA
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    I would use both. Coat both sides of the gasket with RTV.
     
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