Air Break Will Not Release

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

  1. TruckThing4Dad

    TruckThing4Dad Bobtail Member

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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
     
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  3. RunningAces

    RunningAces Road Train Member

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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.
     
  4. TruckThing4Dad

    TruckThing4Dad Bobtail Member

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    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.
     
  5. SmallPackage

    SmallPackage Road Train Member

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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.
     
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  6. AModelCat

    AModelCat Road Train Member

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    Is air leaking out somewhere or not?
     
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  7. Heavyd

    Heavyd Road Train Member

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    Brake pedal partially stuck down.
     
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  8. TruckThing4Dad

    TruckThing4Dad Bobtail Member

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    Jun 20, 2024
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    yes he said he found it. Master valve.
     
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