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International 4900 air governor problems

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Greasemonkeygringo, Aug 6, 2019.

  1. Aug 6, 2019 #1
    Greasemonkeygringo

    Greasemonkeygringo Bobtail Member

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    Dec 28, 2017
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    I have a 2001 International 4900 I just put a new governor on it and still cannot regulate air pressure it has no air dryer on it so no purge valve that I can see
     
    Greasemonkeygringo, Aug 6, 2019
    Greasemonkeygringo, Aug 6, 2019
    #1
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  3. Aug 6, 2019 #2
    Heavyd

    Heavyd Road Train Member

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    Ok, doesn't regulate how? Too high, too low...?
     
    Heavyd, Aug 6, 2019
    Heavyd, Aug 6, 2019
    #2
    spsauerland Thanks this.
  4. Aug 6, 2019 #3
    Greasemonkeygringo

    Greasemonkeygringo Bobtail Member

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    Dec 28, 2017
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    Was constantly too high I just took it out on the road and won't build pressure now past 60 lb
     
    Greasemonkeygringo, Aug 6, 2019
    Greasemonkeygringo, Aug 6, 2019
    #3
  5. Aug 6, 2019 #4
    Heavyd

    Heavyd Road Train Member

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    Unbolt your governor and see what it does. If the original problem returns, then something is wrong the governor you just installed or incorrect plumbing.
     
    Heavyd, Aug 6, 2019
    Heavyd, Aug 6, 2019
    #4
    Greasemonkeygringo and spsauerland Thank this.
  7. Aug 7, 2019 #5
    WitchingHour

    WitchingHour Road Train Member

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    Have you disconnected the other end of line from the unloading valve, disconnected the discharge hose from the compressor, and run it while applying and removing shop air to see how the compressor responds?
     
    WitchingHour, Aug 7, 2019
    WitchingHour, Aug 7, 2019
    #5
    Greasemonkeygringo Thanks this.
  8. Aug 7, 2019 #6
    Greasemonkeygringo

    Greasemonkeygringo Bobtail Member

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    Dec 28, 2017
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    Thank you for your replying ,we only got a couple Internationals in our fleet and my first working on one without a dryer, the learning curve Is never over. Lol
     
    Greasemonkeygringo, Aug 7, 2019
    Greasemonkeygringo, Aug 7, 2019
    #6
  9. Aug 7, 2019 #7
    Greasemonkeygringo

    Greasemonkeygringo Bobtail Member

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    Dec 28, 2017
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    Thank you ,getting ready to pull it in.
     
    Greasemonkeygringo, Aug 7, 2019
    Greasemonkeygringo, Aug 7, 2019
    #7
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