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Air Break Will Not Release

Discussion in 'International Forum' started by TruckThing4Dad, Aug 25, 2024.

  1. Aug 25, 2024 #1
    TruckThing4Dad

    TruckThing4Dad Bobtail Member

    8
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    Jun 20, 2024
    0
    Hello,

    Parking brake applied but air still going to brakes locking the brakes. Anyone know what this means and how to fix?

    Thanks
     
    TruckThing4Dad, Aug 25, 2024
    TruckThing4Dad, Aug 25, 2024
    #1
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  3. Aug 25, 2024 #2
    RunningAces

    RunningAces Road Train Member

    1,298
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    Jul 2, 2017
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    If you mean it's blowing out of one of your brake chambers you'll have to cage it. There's a ton of videos on YouTube on how to do this so just lookup "caging a brake chamber" there.
     
    RunningAces, Aug 25, 2024
    RunningAces, Aug 25, 2024
    #2
  4. Aug 26, 2024 #3
    TruckThing4Dad

    TruckThing4Dad Bobtail Member

    8
    3
    Jun 20, 2024
    0
    He said he thought it was coming out of the brake chamber but it isn’t. He took that apart. However, the brake is still applied when his foot is not on the pedal. Air is still flowing, although the brake is not applied.
     
    TruckThing4Dad, Aug 26, 2024
    TruckThing4Dad, Aug 26, 2024
    #3
  5. Aug 26, 2024 #4
    SmallPackage

    SmallPackage Road Train Member

    5,688
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    Dec 20, 2019
    Marion Texas
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    That chamber is bad. When park brakes are released air flows in to push against spring. If rubber diaphram is blown that air can back feed thru the foot peddle side.
     
    SmallPackage, Aug 26, 2024
    SmallPackage, Aug 26, 2024
    #4
    TruckThing4Dad Thanks this.
  7. Aug 26, 2024 #5
    AModelCat

    AModelCat Road Train Member

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    Jul 7, 2015
    Canuckistan
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    Is air leaking out somewhere or not?
     
    AModelCat, Aug 26, 2024
    AModelCat, Aug 26, 2024
    #5
    TruckThing4Dad Thanks this.
  8. Aug 26, 2024 #6
    Heavyd

    Heavyd Road Train Member

    7,811
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    Feb 4, 2009
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    Brake pedal partially stuck down.
     
    Heavyd, Aug 26, 2024
    Heavyd, Aug 26, 2024
    #6
    TruckThing4Dad Thanks this.
  9. Aug 27, 2024 #7
    TruckThing4Dad

    TruckThing4Dad Bobtail Member

    8
    3
    Jun 20, 2024
    0
    yes he said he found it. Master valve.
     
    TruckThing4Dad, Aug 27, 2024
    TruckThing4Dad, Aug 27, 2024
    #7
    RunningAces Thanks this.
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