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T90 help!!

Discussion in 'Flat Fender Tech' started by jeepin_nate, Sep 28, 2009.

  1. Sep 28, 2009
    jeepin_nate

    jeepin_nate New Member

    Holland, MI
    Joined:
    Mar 28, 2009
    Messages:
    17
    I have a T90 that wont stay in 2nd gear and grinds going in to 2nd and 3rd. What can I do or does anybody know a good rebuild guy near Holland, MI
     
  2. Sep 29, 2009
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    23,596
    You can read about a rebuild here http://www.novak-adapt.com/knowledge/t90_rebuild.htm

    Popping out of 2nd is common and ususlly indicates a worn 2nd gear internal bushing as described in the article linked above. Gear clash downshifting from 3rd to 2nd is expected in a worn transmission - the 2nd gear blocking ring is worn. Learn to double clutch.

    Consider rebuilding it yourself, or maybe send it to Herm www.hermtheoverdriveguy.com
     
  3. Sep 29, 2009
    duffer

    duffer Rodent Power

    Bozeman, MT
    Joined:
    Sep 17, 2009
    Messages:
    4,517
    Actually, the T90 is a pretty straight forward rebuild that doesn't require a bunch of special tools, although a dummy shaft helps with the assembly of the countershaft needle bearings. If so inclined, this would be a good project to get your "feet wet". Get a factory manual-it can be 2A, 3A, 3B, CJ5/6, or for FC 150/70, wagons or pickups. All utilized T90's and will have adequate instructions.
     
  4. Sep 30, 2009
    jeep2003

    jeep2003 Well-Known Member

    Upstate NY
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    May 30, 2006
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    1,934
  5. Sep 30, 2009
    SUCKYJUNK

    SUCKYJUNK Painter

    New Lothrop, MI
    Joined:
    Mar 16, 2008
    Messages:
    79
    Take your time and rebuild it yourself over the winter
     
  6. Oct 1, 2009
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    Should only take a weekend, even for a beginner...
     
  7. Oct 1, 2009
    NoFlyZone

    NoFlyZone Member

    Ridgeville, SC
    Joined:
    Mar 17, 2006
    Messages:
    578
    You might have to skip church.
     
  8. Oct 1, 2009
    jflots

    jflots Member

    New Smyrna Beach, FL
    Joined:
    Sep 30, 2005
    Messages:
    308
    It may be a religious experience in itself.
     
  9. Oct 1, 2009
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
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    23,596
    I'm a little shy of generic parts from the Jeep retailers.

    I'd go with a kit from Herm or from Novak. Herm puts together his kits from various sources, and has a realistic idea of the relative quality of specific parts from different suppliers. Herm's prices are good too.
     
  10. Oct 1, 2009
    jeepin_nate

    jeepin_nate New Member

    Holland, MI
    Joined:
    Mar 28, 2009
    Messages:
    17
    Thanks for the ideas. I might try to rebuild it when I break it it or something else wheeling it this winter.:beer:
     
  11. Oct 1, 2009
    michigan_pinstripes

    michigan_pinstripes I'm not lost, I'm wandering

    Clarkston MI...
    Joined:
    Aug 20, 2003
    Messages:
    605
    Kicking out likely because teeth on the gears are chipped off (how mine was)

    piece of cake to rebuild, buy the Herm kit and I didn't even have a manual! Knock the bottom shaft out, counter gear set rests in case, the top set slides right out. I made a dozen mistakes by not carefully noting the order the syncros came out.

    Worse part of the project is getting it out of the Jeep and back in! Buy one from somebody and rebuild it.

    Very rewarding project
     
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