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Airbags will not build up air

Discussion in 'Kenworth Forum' started by Shop hand, Sep 6, 2017.

  1. Sep 6, 2017 #1
    Shop hand

    Shop hand Bobtail Member

    1
    0
    Sep 6, 2017
    0
    Kenworth T 800 airbags will not Air up I have to jerk the truck a couple times change the dump switch changed leveler villes checked all lines no bent hoses after jerking the truck airbags go off just fine any suggestions
     
    Shop hand, Sep 6, 2017
    Shop hand, Sep 6, 2017
    #1
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  3. Sep 6, 2017 #2
    daf105paccar

    daf105paccar Road Train Member

    6,564
    7,293
    Apr 15, 2012
    0
    Stuck valve.
     
    daf105paccar, Sep 6, 2017
    daf105paccar, Sep 6, 2017
    #2
  4. Apr 13, 2019 #3
    starmac

    starmac Road Train Member

    6,639
    12,528
    Apr 11, 2019
    Fairbanks Ak
    0
    I know this is an old post and surely he has fixed it, but there is a valve on one of the air tanks that is a safety valve and won't let them air up till it makes enough pounds, when that valve goes bad, she will not air up, the only thing hooked to it is the airline to the bags. I forget exactly what it is called, I even had trouble getting KW parts or even the techs to understand what I was talking about, untill I walked out intheir shop and pointed it out on a truck they were working on.
     
    starmac, Apr 13, 2019
    starmac, Apr 13, 2019
    #3
  5. Apr 13, 2019 #4
    spsauerland

    spsauerland Road Train Member

    4,296
    10,887
    May 31, 2010
    West Harrison, In
    0
    Pressure protection valve.
     
    spsauerland, Apr 13, 2019
    spsauerland, Apr 13, 2019
    #4
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