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Air leak exhaust port when conect trailer! Prostar 2012

Discussion in 'International Forum' started by shef777, Jun 26, 2023.

Page 1 of 2
  1. Jun 26, 2023 #1
    shef777

    shef777 Bobtail Member

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    Jan 30, 2018
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    When push brake pedal air leak through exhaust port just with trailer. I checked all chambers on trailer good
     
    shef777, Jun 26, 2023
    shef777, Jun 26, 2023
    #1
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  3. Jun 26, 2023 #2
    AModelCat

    AModelCat Road Train Member

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    Jul 7, 2015
    Canuckistan
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    Need to be more specific, there's like 15 air valves on a truck that have exhaust ports.
     
    AModelCat, Jun 26, 2023
    AModelCat, Jun 26, 2023
    #2
    D.Tibbitt and Heavyd Thank this.
  4. Jun 26, 2023 #3
    shef777

    shef777 Bobtail Member

    16
    0
    Jan 30, 2018
    0
    Exhaust port foot valve
     
    shef777, Jun 26, 2023
    shef777, Jun 26, 2023
    #3
  5. Jun 26, 2023 #4
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    May 2, 2021
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    How do you know the brake chambers are good? Lines backwards,?
     
    Big Road Skateboard, Jun 26, 2023
    Big Road Skateboard, Jun 26, 2023
    #4
    Friend Thanks this.
  7. Jun 26, 2023 #5
    shef777

    shef777 Bobtail Member

    16
    0
    Jan 30, 2018
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    I closed all the lines one by one
     
    shef777, Jun 26, 2023
    shef777, Jun 26, 2023
    #5
  8. Jun 26, 2023 #6
    Phoenix Heavy Haul

    Phoenix Heavy Haul Medium Load Member

    469
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    Feb 8, 2022
    Raleigh NC
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    Where is the air coming from when you press the brake?
    I’m confused
     
    Phoenix Heavy Haul, Jun 26, 2023
    Phoenix Heavy Haul, Jun 26, 2023
    #6
  9. Jun 26, 2023 #7
    shef777

    shef777 Bobtail Member

    16
    0
    Jan 30, 2018
    0
    Exhaust port foot valve
     
    shef777, Jun 26, 2023
    shef777, Jun 26, 2023
    #7
  10. Jun 28, 2023 #8
    avgdzlmekanic

    avgdzlmekanic Light Load Member

    62
    25
    Jun 8, 2019
    SoCal
    0
    If I am understanding this correctly, sounds like the valve on the firewall is leaking air when you press the brake pedal with the trailer brakes released? If so, either the valve is bad or a hose probably disconnected from the valve and is hiding with all the other hoses?
     
    avgdzlmekanic, Jun 28, 2023
    avgdzlmekanic, Jun 28, 2023
    #8
  11. Jul 1, 2023 #9
    Heavyd

    Heavyd Road Train Member

    7,812
    6,265
    Feb 4, 2009
    0
    Tractor protection valve sticking?
     
    Heavyd, Jul 1, 2023
    Heavyd, Jul 1, 2023
    #9
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