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Inter axle differential left locked

Discussion in 'Questions From New Drivers' started by Canadianhauler21, Mar 31, 2019.

  1. Mar 31, 2019 #1
    Canadianhauler21

    Canadianhauler21 Heavy Load Member

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    I noticed yesterday that my inter axle differential was left on for a 1800 mile trip on mostly dry ground. I just had the random urge to check and as luck would have it, the thing was locked. My Qualcomm device basically covers that switch and I gotta move my head under it to see it. I heard it kills your fuel economy but I ended up getting an 8.1 average with it on the whole time.

    Just wondering if I messed something up? You think it's worth mentioning to the company or keeping my mouth shut about it? I work for a mega carrier if that makes a difference.

    I heard some of the new trucks automatically shut it off after some time, but not too sure.

    The truck is a 2016 Cascadia.
     
    Canadianhauler21, Mar 31, 2019
    Canadianhauler21, Mar 31, 2019
    #1
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  3. Mar 31, 2019 #2
    blairandgretchen

    blairandgretchen Road Train Member

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    I think some guys run it locked in all the time.

    I don’t, just engage on soft ground.
     
    blairandgretchen, Mar 31, 2019
    blairandgretchen, Mar 31, 2019
    #2
    Lepton1 and Canadianhauler21 Thank this.
  4. Mar 31, 2019 #3
    x1Heavy

    x1Heavy Road Train Member

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    You can absolutely BURN IT UP.

    If it's on dry ground the whole time or worse.

    Have the shop move the switch. Get your mind on your tractor. you probably pulled a little more wear and tear than necessary.
     
    x1Heavy, Mar 31, 2019
    x1Heavy, Mar 31, 2019
    #3
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  5. Mar 31, 2019 #4
    Kw Owners Club

    Kw Owners Club Bobtail Member

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    Worked for a guy hauling super B and he wanted them left in all the time,I'd turn it off and comeback to work he would have it back in and give me #### lol,never wrecked anything,but manuals n stickers in truck say only run on soft loose ground and not over certain speeds
     
    Kw Owners Club, Mar 31, 2019
    Kw Owners Club, Mar 31, 2019
    #4
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  7. Mar 31, 2019 #5
    Brettj3876

    Brettj3876 Road Train Member

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    Its not gonna do it any harm. If you were talking about a full locker that would be a diff story. Even with the power divider engaged the diff works as an open differential or semi open. Up north its not uncommon to run with it in year round
     
    Brettj3876, Mar 31, 2019
    Brettj3876, Mar 31, 2019
    #5
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  8. Mar 31, 2019 #6
    gokiddogo

    gokiddogo Road Train Member

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    Where's "up north" ?
    Only use mine if can't get started on snow or ice or uneven ground....whatever the case may be.
     
    gokiddogo, Mar 31, 2019
    gokiddogo, Mar 31, 2019
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  9. Mar 31, 2019 #7
    Brettj3876

    Brettj3876 Road Train Member

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    Canadian oil patch territory
     
    Brettj3876, Mar 31, 2019
    Brettj3876, Mar 31, 2019
    #7
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  10. Mar 31, 2019 #8
    gokiddogo

    gokiddogo Road Train Member

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    Ah. Where real work happens. Never been there :/
     
    gokiddogo, Mar 31, 2019
    gokiddogo, Mar 31, 2019
    #8
  11. Mar 31, 2019 #9
    wore out

    wore out Numbered Classic

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    Leaving one locked in doesn't hurt a thing. You can engage it at any speed as long as all drive wheels have good traction. When you grenade one is engaging it while one drive set is spinning.
     
    wore out, Mar 31, 2019
    wore out, Mar 31, 2019
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