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13 speed eaton fuller transmission

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Csmith75, Sep 9, 2020.

  1. Sep 9, 2020 #1
    Csmith75

    Csmith75 Bobtail Member

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    Sep 5, 2020
    0
    Issue... when the trans oil gage is in the 100s it will work properly shift thru all the gears
    When it is around 200 as long as I stay in high range it works fine, if I have to switch to low range because of a stop it will not shift back into high range and I have to sit until it cools back down.
    So far I have put new airlines, new slave valve twice and cleaned and lubricant the plunger o ring.
    My question is the mystery of why it works properly cold but not hot what is the next thing I can try?
    TIA
     
    Csmith75, Sep 9, 2020
    Csmith75, Sep 9, 2020
    #1
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  3. Sep 9, 2020 #2
    AArtemtrk

    AArtemtrk Light Load Member

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    When you say you replaced the airlines are you referring to the tiny ones from the shift tower or the large ones running from the slave? Have you replaced regulator on back of trans? Checked that supply air is good?
     
    AArtemtrk, Sep 9, 2020
    AArtemtrk, Sep 9, 2020
    #2
  4. Sep 9, 2020 #3
    Csmith75

    Csmith75 Bobtail Member

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    Sep 5, 2020
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    All airlines have been replaced. Have not replaced regulator. Will check air supply next.
     
    Csmith75, Sep 9, 2020
    Csmith75, Sep 9, 2020
    #3
  5. Sep 9, 2020 #4
    AArtemtrk

    AArtemtrk Light Load Member

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    Did you clean both the cylinders? Maybe you cleaned the splitter and not the range shift?
     
    AArtemtrk, Sep 9, 2020
    AArtemtrk, Sep 9, 2020
    #4
  7. Sep 9, 2020 #5
    lester

    lester Midwest's #1 Feed Hauler

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    Have you checked the fluid in the transmission?
     
    lester, Sep 9, 2020
    lester, Sep 9, 2020
    #5
  8. Sep 9, 2020 #6
    Csmith75

    Csmith75 Bobtail Member

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    Sep 5, 2020
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    Yes its full, we are changing that tomorrow
     
    Csmith75, Sep 9, 2020
    Csmith75, Sep 9, 2020
    #6
  9. Sep 10, 2020 #7
    daf105paccar

    daf105paccar Road Train Member

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    Have the oil analysed.
     
    daf105paccar, Sep 10, 2020
    daf105paccar, Sep 10, 2020
    #7
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