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Primary Air buzzer stays on

Discussion in 'Peterbilt Forum' started by kloria, Sep 26, 2020.

  1. Sep 26, 2020 #1
    kloria

    kloria Bobtail Member

    20
    5
    Sep 25, 2020
    0
    Hello

    I purchased a 2007 Peterbilt 387 with C15. The primary air buzzer stays on and the air pressure stays at zero. There is no air leak anywhere. I changed the primary air gauge on the dash and still the same issue. Anyone had this issue? Thank you
     
    kloria, Sep 26, 2020
    kloria, Sep 26, 2020
    #1
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  3. Sep 26, 2020 #2
    JuzNvrNo

    JuzNvrNo Light Load Member

    91
    58
    Sep 25, 2018
    Texas
    0
    Look on the back of your tractor
    If your standing behind the truck. On the left side there is a bar, it’s hooked up to a valve with about I think 2 or 3 air hoses. Sometimes my looses air pressure. That’s where it always is ? Sometimes that bar leans to one side and causes a leak. I hope this helps ya out. B safe
     
    JuzNvrNo, Sep 26, 2020
    JuzNvrNo, Sep 26, 2020
    #2
    kloria Thanks this.
  4. Sep 26, 2020 #3
    kloria

    kloria Bobtail Member

    20
    5
    Sep 25, 2020
    0
    Thank you, I will check it out. I was also told maybe it's the pressure switch located inside the dash PART#Q27-1038
     
    kloria, Sep 26, 2020
    kloria, Sep 26, 2020
    #3
  5. Sep 26, 2020 #4
    JuzNvrNo

    JuzNvrNo Light Load Member

    91
    58
    Sep 25, 2018
    Texas
    0
    You definitely have to have great hearing to find any air leak. That’s possible
     
    JuzNvrNo, Sep 26, 2020
    JuzNvrNo, Sep 26, 2020
    #4
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