Too much Air!?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by MemphisOrion, Nov 28, 2024.

  1. MemphisOrion

    MemphisOrion Bobtail Member

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    Nov 28, 2024
    Memphis TN
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  3. Animosus

    Animosus Medium Load Member

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    Unloader valve not working? Verify governor is sending air to purge valve and unloader at the proper PSI?
     
    D.Tibbitt, MemphisOrion and Goodysnap Thank this.
  4. Goodysnap

    Goodysnap Road Train Member

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    Yes. ^^^^^^^^

    Check for proper unload air signal at the compressor.
     
  5. MemphisOrion

    MemphisOrion Bobtail Member

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    Nov 28, 2024
    Memphis TN
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    Got it thanks
     
  6. SmallPackage

    SmallPackage Road Train Member

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    Marion Texas
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    I agree on the unloader. But I have seen bad safety valves a time or two. They just sit there and collect dirt. Most recent one I had was a 140 psi one keep popping off at 110. Never let compressor unloader shut off. Tap on it, it would close. Started doing it once every 5 or 6 cycles, then went to every time.
     
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