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compressor popping

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by scokat, Dec 13, 2017.

  1. Dec 13, 2017 #1
    scokat

    scokat Bobtail Member

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    Oct 14, 2013
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    Have a series 6o detroit with aa bendix compressor. Truck holds air, however the compressor started popping continuosly then stops popping again. It seems like its coming out a valve on the back of compressor.. any ideas.
     
    scokat, Dec 13, 2017
    scokat, Dec 13, 2017
    #1
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  3. Dec 13, 2017 #2
    swaan

    swaan Road Train Member

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    Jul 12, 2009
    BC canada
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    It could be the safety blow off valve. Is it brass and threaded into the head of compressor?
    It might need replaced . Verify first governr is cutting in/out at right psi.
     
    swaan, Dec 13, 2017
    swaan, Dec 13, 2017
    #2
  4. Dec 13, 2017 #3
    scokat

    scokat Bobtail Member

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    Oct 14, 2013
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    It cuts off at 120, but then will start back up and start popping for 5 mins or so
     
    scokat, Dec 13, 2017
    scokat, Dec 13, 2017
    #3
  5. Dec 13, 2017 #4
    terryt

    terryt Heavy Load Member

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    Apr 27, 2009
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    could be the air governor is frozen Don't know where you at. Or when the last time you serviced the air dyer or drain the tanks all these could cause it
     
    terryt, Dec 13, 2017
    terryt, Dec 13, 2017
    #4
  6. Dec 14, 2017 #6
    wtokhi

    wtokhi Light Load Member

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    Nov 3, 2017
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    check you air governor its right where you said the popping noise is coming from
     
    wtokhi, Dec 14, 2017
    wtokhi, Dec 14, 2017
    #6
  7. Dec 14, 2017 #6
    GrapeApe

    GrapeApe Road Train Member

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    A blockage in a line will make it pop like that. Happens to ours once in a while in the winter if the discharge line freezes. Once it pops like that, there's a good chance that valve is no good now and wont seat fully. Once you find the problem, I'd put a new safety valve in it too, they're pretty cheap.
     
    GrapeApe, Dec 14, 2017
    GrapeApe, Dec 14, 2017
    #6
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