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T18/D18/OD locked up

Discussion in 'Early CJ5 and CJ6 Tech' started by bkd, Jul 26, 2010.

  1. Jul 26, 2010
    bkd

    bkd Moderator Supreme Staff Member

    K-Town Tenn.
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    went to Big Bear this weekend and out on the trail my drivetrain locked up solid.
    I have a FF rearend so we unlocked the rears and strapped it off the trail (thanks Ray/sdcj6).
    I began the tear down this morning. I started by pulling the OD housing and the first thing I found was the retainer clip that holds the special washer was missing. I got the battered washer out and the nut that secures the OD to the output of the trans was finger loose :shock:. I took the planetary apart as it wouldn't turn freely (in fact it locked up solid in spots), and found the remains of the clip ground into a fine paste.
    I'm cleaning up the planetary and it seems to turn freely now.......and all appears fine.
    My question is what else should I do/llook for before putting this back together?........I'm relatively sure this was/is the problem...and probably the reason the T18 wasn't shifting into second easily.
    Jim
     
    Last edited: Jul 26, 2010
  2. Jul 26, 2010
    1970CJ6

    1970CJ6 new mexico air

    rio rancho, new...
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    I would take the pan off the D18 and make sure that no little pieces got that far.


    Andrew
     
  3. Jul 26, 2010
    bkd

    bkd Moderator Supreme Staff Member

    K-Town Tenn.
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    Ok can do.....anything else ya'll?
     
  4. Jul 26, 2010
    Posimoto

    Posimoto Hopeless JEEP Addict

    Minden, Nevada
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    After Herm rebuilt my grenaded OD and I had flushed out the T-case, I put a strong magnet on the outside of the t-case pan, right by the drain plug to help trap any particles that might have gotten by me.
     
  5. Jul 26, 2010
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    Check the bearing cage with the planetary gears. Try to disassemble as much as you can (without pressing anything) and give it a good cleaning. Be sure to use a touch of lock tite on the little hex head screws on the spud for the bowel gear.

    I had to send a unit to Herm to fix a gear in the cage as a guy didn't clean it good after grinding his snap ring as well.

    You may have to call Herm to get a new snap ring - I have not had much luck finding them (that fit right) anywhere else.
     
  6. Jul 26, 2010
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Boy that sounds familiar.
     
  7. Jul 26, 2010
    bkd

    bkd Moderator Supreme Staff Member

    K-Town Tenn.
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    yup your thread was timely :)
    just pulled the rest of the OD apart, all looks good.....gonna clean it up, order the special washer/snap retainer from Herm....then slap it back together and hope for the best
    Jim
     
  8. Jul 26, 2010
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    I hope mine doesn't back off. I'd like to know why the drive gear nut backed off. I always use new nylock nuts, and I'm sure I torqued it...
     
  9. Jul 26, 2010
    bkd

    bkd Moderator Supreme Staff Member

    K-Town Tenn.
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    pulled the TC pan and it was clean....rotated the TC with the drivelines and see nothing that shouldn't be there..........
    Jim
     
  10. Jul 27, 2010
    uncamonkey

    uncamonkey Member

    Greeley CO
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    Some of those 4 point snap rings that hold the funky washer in aren't too good.
    I've run into a few that weren't very "springy", they didn't expand into the slot well.
     
  11. Jul 27, 2010
    dvw86

    dvw86 Member

    Eastern Washington
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    I'm just putting mine together for the first time. This thread makes me extra paranoid when assembling it.
     
    Hellion likes this.
  12. Jul 27, 2010
    uncamonkey

    uncamonkey Member

    Greeley CO
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    Just be sure everything is tight when you asssemble, proper torques, etc..
    Be sure all the lube levels are good.
    No "speed shifting".
    I have at least 53K on mine, still works well.
     
  13. Jul 27, 2010
    cj6/442

    cj6/442 Sponsor

    Fallbrook, Calif
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    so,,,,,,,,,,,if we had pulled the od cover is the nut right there to tighten ? or is it deeper in the od,thinking easy trail fix ??????????????
     
  14. Jul 27, 2010
    bkd

    bkd Moderator Supreme Staff Member

    K-Town Tenn.
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    well jpflat2a had a bull gear/nut/ TC cover with him so we coulda yanked it and been back to wheeling in another 20 minutes :rofl::(
     
  15. Jul 27, 2010
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    They can be a bit of a pain... I just took 4 hours to pull an OD out of a Tcase I am looking to buy. Others have just popped out easy as pie.
     
  16. Jul 28, 2010
    bkd

    bkd Moderator Supreme Staff Member

    K-Town Tenn.
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    got the OD cleaned up, just waiting for the washer and retainer clip to come...........I also cleaned and straightened the lip on the TC pan I'd removed. The gasket stayed on the TC when I pulled the pan, should I leave it or remove and just use RTV?
    Jim
     
  17. Jul 28, 2010
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    I've become a fan of this.
    [​IMG]
     
  18. Jul 28, 2010
    bkd

    bkd Moderator Supreme Staff Member

    K-Town Tenn.
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    so you'd use that in place of the gasket?
     
  19. Jul 28, 2010
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    I have. It'll seal it.
     
  20. Jul 28, 2010
    bkd

    bkd Moderator Supreme Staff Member

    K-Town Tenn.
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    thanks I'll try it
    Jim
     
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