Cummins m11 fan

Discussion in 'Trucks [ Eighteen Wheelers ]' started by earthmover, Nov 3, 2016.

Page 2 of 2
  1. Feb 6, 2017 #11
    earthmover

    earthmover Medium Load Member

    563
    20
    Jan 27, 2009
    castalia , north carolina
    0
    [​IMG]

    OK picture of the gauges with ac running how can I tell if I need the high pressure switch or not..thanks guys
     
    earthmover, Feb 6, 2017
    earthmover, Feb 6, 2017
    #11
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Feb 6, 2017 #12
    AModelCat

    AModelCat Road Train Member

    29,714
    164,923
    Jul 7, 2015
    Canuckistan
    0
    Something looks wonky there. 55 psi on low side and 50 psi on the high side? With compressor running, low side should drop down while the high side should go up. Almost looks like the compressor was not cycled on when you took that photo.

    Ballpark number to remember is approximately 70 psi static pressure (system off) on high and low side at room temperature. When the compressor kicks on, low side will drop and high side will increase.
     
    AModelCat, Feb 6, 2017
    AModelCat, Feb 6, 2017
    #12
  4. Feb 8, 2017 #13
    earthmover

    earthmover Medium Load Member

    563
    20
    Jan 27, 2009
    castalia , north carolina
    0
    I'll put the gauges on again and run it and check things out..I really need to get it fixed
     
    earthmover, Feb 8, 2017
    earthmover, Feb 8, 2017
    #13
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 2 of 2