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98 w900 cab airbags not airing up

Discussion in 'Kenworth Forum' started by irishluck09, Jul 31, 2023.

  1. Jul 31, 2023 #1
    irishluck09

    irishluck09 Light Load Member

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    Nov 24, 2019
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    Not sure what to look at first. Leveling valve?

    Just notice that the cab bags aren't airing up. Rest of the truck has air no problem
     
    irishluck09, Jul 31, 2023
    irishluck09, Jul 31, 2023
    #1
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  3. Jul 31, 2023 #2
    Oxbow

    Oxbow Road Train Member

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    Idaho
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    There should be a pressure regulator between the air supply and the leveling valve. Often these get gunked up over the years and do not open to allow air to pass. Break the air line leaving the regulator to the leveling valve and see if you have flow there. If not, need to replace the regulator. If so, it must be in the leveling valve.
     
    Oxbow, Jul 31, 2023
    Oxbow, Jul 31, 2023
    #2
  4. Jul 31, 2023 #3
    irishluck09

    irishluck09 Light Load Member

    271
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    Nov 24, 2019
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    Got it. Is that regulator in the same area as the leveling valve or in a different location
     
    irishluck09, Jul 31, 2023
    irishluck09, Jul 31, 2023
    #3
    Oxbow Thanks this.
  5. Jul 31, 2023 #4
    Oxbow

    Oxbow Road Train Member

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    Nov 24, 2015
    Idaho
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    I'm not sure on yours, but on ours they are mounted right off of one of the tanks. If you chase the supply line to the leveling valve back you should find it.
     
    Oxbow, Jul 31, 2023
    Oxbow, Jul 31, 2023
    #4
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