Losing air 5-6 psi per minute while driving

Discussion in 'Ask An Owner Operator' started by Forever237, May 18, 2019.

  1. Forever237

    Forever237 Light Load Member

    69
    12
    May 29, 2016
    0
    Checked brake chamber and lines with soapy water and sprayer. No leak all of them.

    Need to check air dryer and fan clutch.
     
    PE_T Thanks this.
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. Forever237

    Forever237 Light Load Member

    69
    12
    May 29, 2016
    0
    Yes it is auto trans
    Tried that with/without applied brake. It doesn’t lose as wildly as while driving.
     
  4. speedyk

    speedyk Road Train Member

    1,821
    2,418
    Apr 8, 2015
    0
    Could the wind be pulling on an air hose and tweaking a glad hand or trailer connection?
     
  5. Forever237

    Forever237 Light Load Member

    69
    12
    May 29, 2016
    0
    Thanks i’ll check That too.

    It doesn’t fall bellow 100 but compressor is getting overworked
     
  6. flood

    flood Road Train Member

    3,335
    2,331
    Dec 25, 2010
    0
    some of the auto's use AIR to shift....so check there
     
    rank, Socal Xpress and Forever237 Thank this.
  7. kemosabi49

    kemosabi49 Trucker Forum STAFF Staff Member

    7,350
    25,071
    Jan 13, 2013
    SW Arkansas
    0
    Does it do the same bobtailing?
     
  8. Forever237

    Forever237 Light Load Member

    69
    12
    May 29, 2016
    0
    Yep.
     
  9. Cam Roberts

    Cam Roberts Road Train Member

    1,621
    1,914
    May 13, 2018
    0
    i agree with this statement. my truck drops down like this
     
  10. D.Tibbitt

    D.Tibbitt Road Train Member

    12,111
    68,366
    Apr 26, 2013
    Gettin' down westbound
    0
    Definatly check the transmission.. My dt12 auto shifts with air and i had a leak in mine, wasnt losing as much air as u were but i notice my air was spitting off more frequently while driving and i put it in the shop and they found a fitting leaking air on tranny. No idea where its at, but the mechanic say its a common problem on the cascadia , but its been good ever since, that was probably 3 months ago
     
    Forever237, ZVar and PE_T Thank this.
  11. Forever237

    Forever237 Light Load Member

    69
    12
    May 29, 2016
    0
    Checked with TA they said it might be transmission gear box failure. Heading to dealership.
     
    D.Tibbitt Thanks this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  • Draft saved Draft deleted