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T-90? T-86?

Discussion in 'Early CJ5 and CJ6 Tech' started by ethansen, Apr 7, 2005.

  1. Apr 7, 2005
    ethansen

    ethansen Thor

    Littleton, Colorado
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    Oct 3, 2004
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    OK, my tranny case is stamped t-86AA. From what I have read, it probably has the T-90 parts on the inside. So, if I have the main shaft with straight splines, it's T-90 internals, right? Is there anything else to look at inside? If it is T-90, that means ALL the internals are T-90?
     
  2. Apr 7, 2005
    timgr

    timgr Eppur si muove. 2020 Sponsor 2019 Sponsor

    Medford Mass USA
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    Mmm, I think first gear is straight-cut on a T-90 and beveled on a T-86 (quieter).
     
  3. Apr 7, 2005
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    Sep 23, 2002
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    Yup. Dead on about the gear. The output shaft on the T-86 is spiral cut splines instead of straight cut splines also. I think the idea was to help first gear mesh a little easier than on the T-90.
    If you have the straight cut 1st gear and straight cut splines then you have all T-90 guts. Can't mix and match the parts or you end up with problems. Nickmil.
     
  4. Apr 7, 2005
    ethansen

    ethansen Thor

    Littleton, Colorado
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    Oct 3, 2004
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    Is first gear the one that slides on the shaft? My schematic doesn't show which is first gear.
     
  5. Apr 7, 2005
    ethansen

    ethansen Thor

    Littleton, Colorado
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    Oct 3, 2004
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    Using the schematic in the tech article, #23 in FIG. 208. Is that first gear?
     
  6. Apr 7, 2005
    timgr

    timgr Eppur si muove. 2020 Sponsor 2019 Sponsor

    Medford Mass USA
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    Looking at the picture, the sliding gear (#23) operates both 1st and reverse.
     
  7. Apr 7, 2005
    ethansen

    ethansen Thor

    Littleton, Colorado
    Joined:
    Oct 3, 2004
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    Looking In The Tranny, Nothing Looks Real Bad. The Syncros Look A Little Rounded Along With The Edges Of The Gears. The Tranny Goes Into 1 St And 2 Nd Fine, But Will Not Go Into Third (no Matter How Hard You Pull). Any Ideas?
     

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