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Polar Trailer Air Pressure Lost

Discussion in 'Oilfield Trucking Forum' started by roybrownjr4, May 3, 2015.

  1. May 3, 2015 #1
    roybrownjr4

    roybrownjr4 Bobtail Member

    1
    0
    May 3, 2015
    0
    Hello Haulers!

    Can anyone help me with my Polar tailer that loses air pressure soon as I turn my engine off. Mechanics did some work on the my 2013 Peterbilt tractor air lines last night repaired a air leak on driver side, and now I'm losing pressure to the trailer. As long as the engine is running it maintains 120psi. its not holding air, where should I start looking?
     
    roybrownjr4, May 3, 2015
    roybrownjr4, May 3, 2015
    #1
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  3. May 3, 2015 #2
    baha

    baha Road Train Member

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    Jul 25, 2013
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    Chock wheels then set tractor brakes leaving trailer knob in get under trailer an lis. for leak you can spray soapy water on lines?
     
    baha, May 3, 2015
    baha, May 3, 2015
    #2
  4. May 3, 2015 #3
    6daysontheroad

    6daysontheroad Medium Load Member

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    Dec 15, 2012
    North of the Rio Grande
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    Release valve, maybe.
     
    6daysontheroad, May 3, 2015
    6daysontheroad, May 3, 2015
    #3
  5. May 3, 2015 #4
    25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

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    the road less travelled
    0
    Check the chambers for audible leaks, and are the spring brakes coming on at all, causing hot brake drums, and smoke?

    I had one do this and the truck would stay at 120 psi on both tanks but compressor wouldn't shut off. On the ragged edge of brakes dragging. The bad chamber wasn't dragging. Could barely feel it but could see and smell hot brakes.
     
    25(2)+2, May 3, 2015
    25(2)+2, May 3, 2015
    #4
  7. May 3, 2015 #5
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Aug 26, 2014
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    Same thing baha said but maybe release all parking brakes and check the tractor also. Engine off, wheels chocked, trans in gear, thank and be safe!
     
    BoxCarKidd, May 3, 2015
    BoxCarKidd, May 3, 2015
    #5
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