Ultra shift issues

Discussion in 'Kenworth Forum' started by bigdad7, Apr 18, 2018.

  1. bigdad7

    bigdad7 Road Train Member

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    When backing on ground that is not level at odd angles my clutch has issues....
    Normally I can turn truck off or unplug batteries to reset the transmission .

    Today neither worked as I was stuck halfway in a dock blocking a cave for three hours . The mechanic got me unstuck by jacking up the rear axle and like magic we are back in nuetral...what could be causing this or do I just carry a come a long and lift the axle myself to correct this .....

    Eaton 10 utra shift in an 09 kw
     
  2. Rubber duck kw

    Rubber duck kw Road Train Member

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    Get a manual trans that'll fix it.
     
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  3. Goodysnap

    Goodysnap Road Train Member

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    You likely had a fault logged. Was the shifter flashing service? Moving the truck managed the fault to go away. It will occur again most likely. Time to get it into the shop and see what's the matter. To think it will get better on it's own is wishful thinking. Anything less would be purely a guess.

    For starters have the batteries and connections serviced and up to par. Autos are heavily dependent on good clean electrical power supply. Bad connections and low voltage will cause issues.
     
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  4. bigdad7

    bigdad7 Road Train Member

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    I don't think it's electrical because the clutch was showing ca and resetting the electrical did not reset it ....rebuilt the first two pieces of the driveline but not the piece between diffs and due for new shocks could either of those make it more prone to getting hung up on wierdangles when backing
     
  5. Goodysnap

    Goodysnap Road Train Member

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    The CA on the shifter means a "clutch abuse"or slip has occured. Again we are just guessing without getting hooked up and seeing faults logged.
     
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  6. AModelCat

    AModelCat Road Train Member

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    I'll admit, I know next to jack #### about AMT's but the fact that jacking up a wheel got the truck into neutral makes me wonder if it was jammed up under torque? If the clutch isn't fully releasing, thus relieving the torque on the transmission, maybe that's the issue as to why it won't shift back in to neutral?
     
  7. pushbroom

    pushbroom Road Train Member

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    Usually if it gets turned off while in gear the truck will not start until the drive line is turned slightly so it can shift into neutral. Sometimes dropping the bags rolls the truck enough to get it to find neutral. Since it was at a dock Im assuming the truck was backed in and keyed off without shifting into neutral.
    If the incline sensor is calibrated incorrectly it can cause shifting issues but nothing with slow speed maneuverability.
    If you are slow backing in soft ground the clutch may be slipping too much cause the CA to come up.
     
  8. bigdad7

    bigdad7 Road Train Member

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    Ok that makes sense ...... ty
     
  9. Bignuggets

    Bignuggets Bobtail Member

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    CA is clutch abuse this happens when you back up and pull for Words frequently generally I drove one of those transmissions for 5 years don't listen to other people they are what they are it is good to make sure your batteries are always in good condition though as all computers need good voltage as stated before you must have just gotten it in a very bad Bond maybe if you had unconnected the cables and left them for more than 20 minutes the fault would probably have cleared
     
  10. bigdad7

    bigdad7 Road Train Member

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    Had it off long enough to reset fault it just wouldn't go into gear until we jacked up a wheel and spun a back tire , a good friend suggested carrying a ### a long so I could lift an axle off the ground using the frame instead of waiting for a service truck and paying 250 to jack up a tire