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Can it be done? Retrofit Detroit DT-12 to Eaton-Fuller 13 speed?

Discussion in 'Freightliner Forum' started by rbrauns, Jan 12, 2020.

  1. Jan 12, 2020 #1
    rbrauns

    rbrauns Light Load Member

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    Dec 7, 2014
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    Driving a 2008 Cascadia with a freshly inframed 14L Detroit. The truck is great, a bit loud but the Series 60 is a great engine. It is mated to an Eaton-Fuller 13 speed ATM. I hate this transmission but with my bad left knee, I really shouldn't be driving a 13 speed manual.

    So, can I retrofit a newer DT-12 ATM from Detroit to my older truck? Does anyone know how the transmission TCM communicates with the newer engines? Is it J1939 or some other Detroit specific software? I know that the trans should bolt in but getting the engine and transmission computers to talk to each other is my biggest concern.
     
    Last edited: Jan 12, 2020
    rbrauns, Jan 12, 2020
    rbrauns, Jan 12, 2020
    #1
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  3. Jan 19, 2020 #2
    sbaumann14

    sbaumann14 Road Train Member

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    Rhinelander, WI
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    Do you already have the 12sp? If not, gonna be pricey.

    Why do u not like the 13sp? If gearing issue, u can swap out the rear ends for a HEll of a lot less than a different tranny
     
    sbaumann14, Jan 19, 2020
    sbaumann14, Jan 19, 2020
    #2
  4. Jan 23, 2020 #3
    rbrauns

    rbrauns Light Load Member

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    Thanks for responding to my post. I have an Eaton-Fuller 13 speed and it shifts slower than a newbie. Plus it doesn't skip gears even when I'm bobtailing. So, I'd like to know how easy it would be to install a DT-12.
     
    rbrauns, Jan 23, 2020
    rbrauns, Jan 23, 2020
    #3
  5. Jan 30, 2020 #4
    mhyn

    mhyn Road Train Member

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    Northridge, CA
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    what is wrong with you ? )))) entire world wants to remove DT-12 and put something else. You want to do opposite thing )))) forget about DT-12 , stay headache free.
     
    mhyn, Jan 30, 2020
    mhyn, Jan 30, 2020
    #4
  7. Jan 30, 2020 #5
    Snow Monster

    Snow Monster Medium Load Member

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    Ignore post, wrong thread.
     
    Snow Monster, Jan 30, 2020
    Snow Monster, Jan 30, 2020
    #5
  8. Feb 2, 2020 #6
    rbrauns

    rbrauns Light Load Member

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    Dec 7, 2014
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    Been driving so sorry for the delay. Can you tell me what's wrong with the DT-12? I haven't found too many negative comments about it.
     
    rbrauns, Feb 2, 2020
    rbrauns, Feb 2, 2020
    #6
  9. Feb 2, 2020 #7
    25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

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    the road less travelled
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    It really is a question of whether it can interface with a 60 series engine, I'm not sure that it can.

    I have bad knees, and still never want to drive another automated transmission, the clutch is easy, and I float most of the time. Wish I had a 13 or 18, but I get it done with a 10.
     
    25(2)+2, Feb 2, 2020
    25(2)+2, Feb 2, 2020
    #7
    Big Road Skateboard Thanks this.
  10. Feb 2, 2020 #8
    mhyn

    mhyn Road Train Member

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    Northridge, CA
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    after 500-600k miles you will have big repair bills and many towing bills. plus only dealer will repair it...
     
    mhyn, Feb 2, 2020
    mhyn, Feb 2, 2020
    #8
  11. Jun 25, 2022 #9
    Alfa 22

    Alfa 22 Bobtail Member

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    Jun 25, 2022
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    Dt12 is a bad transmission i spend 11k at dealer after that detroit is recommending get the new one they cant even fix their ####
     
    Alfa 22, Jun 25, 2022
    Alfa 22, Jun 25, 2022
    #9
  12. Jun 25, 2022 #10
    Alfa 22

    Alfa 22 Bobtail Member

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    Jun 25, 2022
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    Is anyone change dt12 to eaten fuller manual 13 speed ,,let me know thx,also what is the best automatic model out there
     
    Alfa 22, Jun 25, 2022
    Alfa 22, Jun 25, 2022
    #10
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