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Air Leak on firewall

Discussion in 'Kenworth Forum' started by Houndog, Sep 15, 2013.

  1. Sep 15, 2013 #1
    Houndog

    Houndog Bobtail Member

    4
    0
    Sep 15, 2013
    Carrabelle, Florida
    0
    I have a 2000 w900L KW and air leaks from what to apears to be an open hole about the size of 1/4 inch air line on the outside firewall.The leak only occurs when the trailer supply valve is pushed in. When it is leaking if you put your finger lightly over the hole the trailer supply valve will pop out . Anyone have any Idea what is wrong I want to stop this air leak .
     
    Houndog, Sep 15, 2013
    Houndog, Sep 15, 2013
    #1
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  3. Sep 15, 2013 #2
    baha

    baha Road Train Member

    4,137
    2,836
    Jul 25, 2013
    ga
    0
    it is the EX. line 4 trailer dash valve, U mey have bad valve.
     
    baha, Sep 15, 2013
    baha, Sep 15, 2013
    #2
    Houndog Thanks this.
  4. Sep 15, 2013 #3
    Houndog

    Houndog Bobtail Member

    4
    0
    Sep 15, 2013
    Carrabelle, Florida
    0
    Thank you just didnt want to buy valve if something else was bad .
     
    Houndog, Sep 15, 2013
    Houndog, Sep 15, 2013
    #3
  5. Sep 19, 2013 #4
    Houndog

    Houndog Bobtail Member

    4
    0
    Sep 15, 2013
    Carrabelle, Florida
    0
    Is this valve rebuildable ?
     
    Houndog, Sep 19, 2013
    Houndog, Sep 19, 2013
    #4
  7. Jun 5, 2019 #5
    Wooh60

    Wooh60 Bobtail Member

    3
    0
    Apr 10, 2017
    0
     
    Wooh60, Jun 5, 2019
    Wooh60, Jun 5, 2019
    #5
  8. Jun 5, 2019 #6
    Wooh60

    Wooh60 Bobtail Member

    3
    0
    Apr 10, 2017
    0
    Having this same issue did your ever solve problem?
     
    Wooh60, Jun 5, 2019
    Wooh60, Jun 5, 2019
    #6
  9. Feb 10, 2020 #8
    Jal1975

    Jal1975 Bobtail Member

    1
    0
    Feb 10, 2020
    0
    Also the same issue, either of you figure it out?
     
    Jal1975, Feb 10, 2020
    Jal1975, Feb 10, 2020
    #8
  10. May 19, 2020 #8
    frank_the_tank

    frank_the_tank Light Load Member

    129
    80
    Mar 18, 2010
    pittsburgh, pa
    0
    Currently having this exact issue. How do I fix this??
     
    frank_the_tank, May 19, 2020
    frank_the_tank, May 19, 2020
    #8
  11. May 22, 2020 #9
    Mario C

    Mario C Bobtail Member

    1
    0
    May 22, 2020
    0
    You are referring to the red air valve for the trailer?
     
    Mario C, May 22, 2020
    Mario C, May 22, 2020
    #9
  12. May 22, 2020 #10
    jason6541

    jason6541 Road Train Member

    2,425
    5,366
    Mar 5, 2012
    Omaha, NE
    0
    Sounds like an internal leak on the MV3 valve
    Blowing out exhaust port. Pull dash apart and see where the line from park brake valve runs to air manifold.
     
    jason6541, May 22, 2020
    jason6541, May 22, 2020
    #10
    RubyEagle Thanks this.
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