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2009 prostar isx 600k SERVICE BREAKS LEAK

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by laredotxfranck, Aug 18, 2018.

  1. Aug 18, 2018 #1
    laredotxfranck

    laredotxfranck Bobtail Member

    11
    1
    Jun 10, 2018
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    When I release the trailer parking and press the break pedal I hear an air leak, and I am talking that if I leave the pedal it will empty the tanks. I was able to locate the leak and is coming from a connector of the blue nylon coil hose, the opposite side from where you connect the glad hands. I will post a picture. Not sure what it is but we already check the break chambers. In the picture it shows IMG_0002.jpg IMG_0002.jpg the piece where it leaks but is cover with that black plastic any ideas what could be causing this leak
     
    laredotxfranck, Aug 18, 2018
    laredotxfranck, Aug 18, 2018
    #1
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  3. Aug 18, 2018 #2
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Looks like a quick release valve that helps release the brakes faster after application. Valve is bad. Replace it or take it out of the system in order to get to a repair facility. JMO as none of those stars are here.
     
    BoxCarKidd, Aug 18, 2018
    BoxCarKidd, Aug 18, 2018
    #2
  4. Aug 18, 2018 #3
    laredotxfranck

    laredotxfranck Bobtail Member

    11
    1
    Jun 10, 2018
    0
    where is it located, or is the one i sent on pic
     
    laredotxfranck, Aug 18, 2018
    laredotxfranck, Aug 18, 2018
    #3
  5. Aug 18, 2018 #4
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Aug 26, 2014
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    What you took a picture of.
     
    BoxCarKidd, Aug 18, 2018
    BoxCarKidd, Aug 18, 2018
    #4
  7. Aug 19, 2018 #5
    Heavyd

    Heavyd Road Train Member

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    Yep, in-line quick release valve.
     
    Heavyd, Aug 19, 2018
    Heavyd, Aug 19, 2018
    #5
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