T15 Shift Pattern Is Opposite

Discussion in 'Flat Fender Tech' started by masscj2a, Jun 5, 2017.

  1. Jun 5, 2017
    masscj2a

    masscj2a Sponsor Sponsor

    Chester Mass
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    Ok, I have a T-15 in my cj2a and I went to drive it after a long restoration/mod and the shift pattern is exactly opposite of what it should be.

    3 1
    2 R

    How is this possible and have you ever heard this happening before? I did not do the rebuild, a third party did. What the heck is going on? Thoughts
     
  2. Jun 5, 2017
    PeteL

    PeteL Member Sponsor

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    Do you have three speeds backwards and only one forward? :rofl::rofl::rofl:

    Sorry, couldn't resist.
     
  3. Jun 5, 2017
    AtomicYJ

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    Is it column shifted?
     
  4. Jun 5, 2017
    oldtime

    oldtime oldtime

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    I'll take a wild guess that the shift forks were transposed from one rail to the other.
    I check into it and see if that is possible.
    Best I recall from memory is that the T15 shift tower does require a special assembly procedure.
     
  5. Jun 5, 2017
    AtomicYJ

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    So its possible to reverse the shift pattern on a top shifted transmission? I've only ever heard of that happening to side shift when the arms were hooked up wrong.
     
  6. Jun 5, 2017
    oldtime

    oldtime oldtime

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    I happened to have a T-15 shift tower handy for inspection.
    Yes its certainly possible to mess up the T-15 shift pattern.
    Apparently this particular tower was re-assembled incorrect.
    The shift rails were interposed.
    Meaning that the LH rail assembly was installed on the RH side and vice versa.
     
  7. Jun 5, 2017
    Rich M.

    Rich M. Member

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    That'll certainly keep the thieves at bay...
     
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  8. Jun 5, 2017
    oldtime

    oldtime oldtime

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    You'll have to dissasemble the shift tower and re-assemble per factory instructions.
    The T15 shift tower assembly instructions are provided in the 1972 AMC JEEP Technical Service manual.
     
  9. Jun 6, 2017
    masscj2a

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    Thanks guys. That's also what we came up with as well. Will be doing the reassembly sometime today. I took off the tower yesterday and compared it to a T86 and T90 and apparently its been rebuilt with the rails/forks on the wrong sides. Man, I've done reverse valve bodies on GM auto's but never thought it was possible with a stick. Big load off my mind. I will let you know how it goes. Thanks again.
     
  10. Jun 7, 2017
    masscj2a

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    Rails and forks are in straight now. We were thinking the T-15 may have been in a DJ. :whistle:
     
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  11. Jun 8, 2017
    gunner

    gunner Member

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    DJs get blamed for everything! Kind of like the Russians these days:susp::shock::worry::confused:
     
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  12. Jun 9, 2017
    masscj2a

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    Got to have somebody to blame I guess. :sneak:
     
  13. Jun 9, 2017
    75 DJ

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    Did early DJs come with manual transmissions? I've only seen mid-70s and up but they've all had automatics.
     
  14. Jun 9, 2017
    gunner

    gunner Member

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    DJ-3A were the first DJs (1957?) and all had stick shift; pretty sure all the DJ-5s and 6s thru the mid 60s were standard shift as well. The postals started in 68-69 with the DJ5A. Postals had a variety of transmissions, but all were automatic. Some DJ5s, similar to the postals, were bought by the military and I'm not sure what transmissions they used.

    Automatics or standard shift- they're still to blame
     
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  15. Jun 10, 2017
    masscj2a

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    Indeed.
     
  16. Jun 24, 2017
    PeteL

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    In England, manual shift patterns traditionally were the reverse of the American norm.
     
  17. Jun 24, 2017
    masscj2a

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    And everyone thought I was nuts. Pete, is the pattern the same as my shift pattern I had in the earlier posting?
     
  18. Jun 24, 2017
    PeteL

    PeteL Member Sponsor

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    I'm probably nuts too, regardless.
    Honestly I can't recall exactly, and I may be wrong. It was fifty years ago, but I do remember it being confusing.

    It was in about a 1920s Austin Seven - which was the cousin to American Bantam.

    UPDATE/edit
    I am unable to find evidence that England is different - maybe I'm recalling it wrongly, or perhaps it was the vintage of the car I was driving. Possibly it was the differenece between 3-speed and four-speed, which puts reverse and first in different places.

    Add to that doing it left-handed and on the wrong side of the road.
     
    Last edited: Jun 24, 2017
  19. Jun 24, 2017
    masscj2a

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    Don't worry, they say the memory is not the first thing to go, so you are probably just crazy. :rolleyes:
     
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  20. Jun 25, 2017
    Keys5a

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    Pete, your not crazy! The Austin Healey BN1 from '53 and '54 (100-4 to those in North America) used a reverse-pattern gearbox. First gear is to the right and down, 2nd is right and up, 3rd is left and down, etc. Though this is a 4 speed transmission, first gear has a blocking plate to keep it from being engaged, with 2nd becoming the "new" 1st gear, making the box effectively a 3-speed, still with a reversed patten. The blocking plate can be easily removed to access 1st. The 1st gear was so low (coupled with a 4:10 axle) that the car only went about 10 mph in 1st gear, which is why it was blocked off. The stump-pulling 1st gear wasn't well suited to a sports car, and now as a 3 speed transmission, was less than ideal. Later Big Healeys starting around '55 got two different 4 speeds (depending on years) with a conventional shift pattern. A Laycock overdrive as an option was common on the back of the Big Healeys, giving a reasonable cruising gear.
    -Donny
     
    Last edited: Jun 25, 2017

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