Something is making my Cascadia move at night when i'm in sleeper

Discussion in 'Freightliner Forum' started by Wickedchicken, Apr 6, 2021.

  1. Wickedchicken

    Wickedchicken Bobtail Member

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    Nov 6, 2020
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    Ok Guys,

    Back again. This time, I haven't the slightest clue what is going on with my truck when it comes to this issue. Just to recap, i just bought the truck last December so I'm just figuring out how she runs and operates. But one thing is surely bizzare. At night when i'm in the sleeper it happens. Something moves the trucks forward as if someone has bumped the whole truck while parking. It happens at random times, after I turn my truck off and set the air brakes, it happens with the trailer and without. The entire truck jolts, not by much but just enough so you can feel the shift. It happens for a split second, all the while making my heart skip a beat. When it first happened to me i ran outside my truck to see who hit my truck, but to my amazement no one was there. Any thought on what this might be?
     
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  3. xsetra

    xsetra Road Train Member

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    Air bags are losing air. It gets to a certain point and the wheels have to move to release the pressure.

    Watch your axles when you air up a completely flat air spring.
     
  4. God prefers Diesels

    God prefers Diesels Road Train Member

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    Probably air bags deflating, and it gets to the point where the "roll" overcomes the brakes enough to pop forward a little bit at a time.
     
  5. God prefers Diesels

    God prefers Diesels Road Train Member

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    Lol, beat me to it.
     
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  6. drivinhome

    drivinhome Light Load Member

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    Southeastern Mass
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    X4 on the trailer air bags.
     
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  7. Powder Joints

    Powder Joints Subjective Prognosticator

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    The ghost of a previous driver.....
     
  8. Wickedchicken

    Wickedchicken Bobtail Member

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    thank you guys so much!! i will address this to the mechanic tomorrow.
     
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  9. Magoo1968

    Magoo1968 Light Load Member

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    Try dumping air tonight and see if you still have low air in the morning.
     
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  10. Wickedchicken

    Wickedchicken Bobtail Member

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    its at the dealer, so i'll let them know about it. hopefully they can get the diag and repair in before friday, ive been down since early last week.
     
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  11. Wickedchicken

    Wickedchicken Bobtail Member

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    Nov 6, 2020
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    ok so the dealer checked it out. they used a spray bottle to check for leaks (i could have done that lol) and they said they found no leaks. so they kept it overnight to see if the airbags lost any air, and in the morning they said everything checked out fine. so, i'm thinking they prolly didn't check it properly or could it be something else.
     
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