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T-90 Cluster Gear?

Discussion in 'Early CJ5 and CJ6 Tech' started by modadds, Aug 29, 2019.

  1. Aug 29, 2019
    modadds

    modadds New Member

    Sweetwater, Texas
    Joined:
    Feb 25, 2014
    Messages:
    44
    I recently bought a new lower cluster gear for the T-90 transmission I am rebuilding. After receiving the new cluster gear I noticed that there is no groove for the thrust washer , like the old one had. What do you do ? I was told to cut a new grove to accommodate the thrust washer, but I also read to just flatten the little bent pieces on the thrust washer itself. What is the best?
     
  2. Aug 30, 2019
    EMA

    EMA Member

    Lake Elsinore,...
    Joined:
    Feb 20, 2019
    Messages:
    82
    Sounds odd..?
    Sure you ordered the correct gear..?
    My vote be to grind the gear carefully to fit the Thrust Washer.
    The tag of the washer needs to be "locked".
    The Thrust Washer then only has ONE side to wear against rather than two... lasting longer.
    Just my 2cents... :)
     
  3. Aug 30, 2019
    fyrmn

    fyrmn Member 2023 Sponsor 2022 Sponsor

    High Desert AZ
    Joined:
    Apr 29, 2006
    Messages:
    198
    I had the same issue with a T90c rebuild.
    I consulted "metalshaper". I belive he told me to flatten or grind off the little tabs. IIRC
    I have had no problems. I have also heard about cutting groves in the gear is good too.
     
  4. Aug 31, 2019
    oldtime

    oldtime oldtime

    St. Charles,...
    Joined:
    Aug 14, 2006
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    3,466
    You only want rotation between the countershaft gear and the "bronze face" of thrust washer.
     
  5. Aug 31, 2019
    EMA

    EMA Member

    Lake Elsinore,...
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    Feb 20, 2019
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    Good Point...Thanks
     
  6. Aug 31, 2019
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Aug 10, 2003
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    Somehow I recall that the B-W 3-speed transmissions I've worked on (not the T-90) have had the notch for the thrust washers machined into the case, not the gear. Am I remembering this wrong, or is the T-90 different?
     
  7. Aug 31, 2019
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
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    12,529
    There are two styles of T-90 counter/cluster gears (gear tooth counts notwithstanding). One style has the gearset notched for the thrust washers and one style of transmission has the case notched for the thrust washer. I suspect it has to do with era/year of production but have nothing to support that supposition as when I get them they are typically cores with identifiers missing. Ymmv.
     
  8. Sep 4, 2019
    modadds

    modadds New Member

    Sweetwater, Texas
    Joined:
    Feb 25, 2014
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    44
    ground the notch and it worked fine
     
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