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2007 volvo 780 loosing air pressure @ 65 mph

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by A2Z transfer, Jun 21, 2018.

  1. Jun 21, 2018 #1
    A2Z transfer

    A2Z transfer Bobtail Member

    2
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    Jun 21, 2018
    0
    2007 volvo 780 with the d12. Losing air pressure at 65 mph when the engine fan engages. Had a new fan cluch installed 60 miles down the road still doing the same thing. Any ideas please help.
     
    A2Z transfer, Jun 21, 2018
    A2Z transfer, Jun 21, 2018
    #1
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  3. Jun 21, 2018 #2
    mladen86

    mladen86 Medium Load Member

    303
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    Aug 23, 2012
    Chicago,il
    0
    I had similar thing happen to my truck.
    On the right side of the engine there is an air line going from air compressor and it had small hole in it but the leak was very loud.
     
    mladen86, Jun 21, 2018
    mladen86, Jun 21, 2018
    #2
  4. Jun 21, 2018 #3
    A2Z transfer

    A2Z transfer Bobtail Member

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    0
    Jun 21, 2018
    0
    Thank you, That was my though originally. Volvo checked that green line for leaks before we did the clutch. Could not find any leaks. Driver does not hear any air leak either
     
    A2Z transfer, Jun 21, 2018
    A2Z transfer, Jun 21, 2018
    #3
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