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84 W900B air problems

Discussion in 'Trucks [ Eighteen Wheelers ]' started by herbiemin, Sep 22, 2016.

  1. Sep 22, 2016 #1
    herbiemin

    herbiemin Light Load Member

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    I am in the process of getting our new to us truck ready for inspection. When doing an applied pressure brake test, I am getting air through the blue trailer line even with the trailer valve still pulled. Yellow knob is the only one pushed in. The trailer valve is a brand new valve because the old one was leaking. Is it possible we got the valve installed wrong or is something else wrong?
     
    herbiemin, Sep 22, 2016
    herbiemin, Sep 22, 2016
    #1
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  3. Sep 22, 2016 #2
    baha

    baha Road Train Member

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    The valve at far end of both em. an serv. brake lines under sleeper is bad, order protection valve
     
    baha, Sep 22, 2016
    baha, Sep 22, 2016
    #2
    BoxCarKidd Thanks this.
  4. Sep 22, 2016 #3
    AModelCat

    AModelCat Road Train Member

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    ^^^ what he said.
     
    AModelCat, Sep 22, 2016
    AModelCat, Sep 22, 2016
    #3
  5. Sep 22, 2016 #4
    herbiemin

    herbiemin Light Load Member

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    Is this it? image.jpeg
     
    herbiemin, Sep 22, 2016
    herbiemin, Sep 22, 2016
    #4
  7. Sep 22, 2016 #5
    AModelCat

    AModelCat Road Train Member

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    Looks like that's the valve.
     
    AModelCat, Sep 22, 2016
    AModelCat, Sep 22, 2016
    #5
    baha Thanks this.
  8. Sep 22, 2016 #6
    passingthru69

    passingthru69 Road Train Member

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    Looks like fun taking off those lines
     
    passingthru69, Sep 22, 2016
    passingthru69, Sep 22, 2016
    #6
  9. Sep 23, 2016 #7
    herbiemin

    herbiemin Light Load Member

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    Dec 20, 2014
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    Kenworth has it in stock. the parts guy said the exact same valve is used on most of their trucks even now. Must be a good design....
     
    herbiemin, Sep 23, 2016
    herbiemin, Sep 23, 2016
    #7
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