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air leak

Discussion in 'Kenworth Forum' started by sean1966, Jan 27, 2013.

Page 1 of 2
  1. Jan 27, 2013 #1
    sean1966

    sean1966 Bobtail Member

    9
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    Jan 27, 2013
    Bedford,Pa
    0
    New here and a new owner-operator. I have a 04 t-800 with a air leak at the firewall. When I pull on the valve to set my trailer brakes.I see other air lines that hook up in this area,and was wondering if maybe a line just blew off or something.
     
    sean1966, Jan 27, 2013
    sean1966, Jan 27, 2013
    #1
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  3. Jan 27, 2013 #2
    Mark Kling

    Mark Kling Technology Contributor

    10,935
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    Sep 23, 2007
    Statesville, NC
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    I had a Pete that did that. It was an air leak on the trailer. Check your trailer lines.
     
    Mark Kling, Jan 27, 2013
    Mark Kling, Jan 27, 2013
    #2
  4. Jan 27, 2013 #3
    Hegemeister

    Hegemeister Road Train Member

    1,912
    1,660
    Jun 16, 2012
    Mechanicsburg, PA
    0
    Can't be the trailer when you set the brakes. That will remove pressure from the trailer. I would move the truck to a quiet area and see if you can hear the vicinity of the leak. Also place your hand over the area you hear the leak. Hearing a change in the sound will help you pinpoint the leak.
     
    Hegemeister, Jan 27, 2013
    Hegemeister, Jan 27, 2013
    #3
  5. Jan 27, 2013 #4
    jbatmick

    jbatmick Road Train Member

    2,185
    2,441
    Dec 1, 2009
    hastings, Fl
    0
    Take a plastic squeeze bottle, put a little dish washing soap in it, fill with water. Spray all the junctions, fittings, hoses, etc., and look for bubbles in the soapy water.
     
    jbatmick, Jan 27, 2013
    jbatmick, Jan 27, 2013
    #4
  7. Jan 27, 2013 #5
    sean1966

    sean1966 Bobtail Member

    9
    0
    Jan 27, 2013
    Bedford,Pa
    0
    I know where the leak is. just not sure how to fix it. On the top center of the fire wall, there is an area with round ports that some air lines go to. Two of the ports are open with no lines going to them.One of those ports is blowing air out hard when I set the trailer brakes.Just wondering if it might have blown a line off there. I noticed two air lines ziped tied with other lines that are not hooked to anything,one is orange and one black. Does one of those lines go to the leaking port?
     
    sean1966, Jan 27, 2013
    sean1966, Jan 27, 2013
    #5
  8. Jan 27, 2013 #6
    dude6710

    dude6710 Road Train Member

    2,162
    622
    Mar 26, 2010
    MN
    0
    So it only Blows air out for a few seconds after you pull up on the trailer brakes?

    if its not consistent airflow I wouldn't worry.
     
    dude6710, Jan 27, 2013
    dude6710, Jan 27, 2013
    #6
  9. Jan 27, 2013 #7
    jbatmick

    jbatmick Road Train Member

    2,185
    2,441
    Dec 1, 2009
    hastings, Fl
    0
    Find another truck like yours, and look at it. I believe you will find there is not a problem, just normal exhaust of air from setting your brakes.
     
    jbatmick, Jan 27, 2013
    jbatmick, Jan 27, 2013
    #7
  10. Jan 27, 2013 #8
    sean1966

    sean1966 Bobtail Member

    9
    0
    Jan 27, 2013
    Bedford,Pa
    0
    it dosent stop blowing,losses all air pressure?
     
    sean1966, Jan 27, 2013
    sean1966, Jan 27, 2013
    #8
  11. Jan 29, 2013 #9
    sean1966

    sean1966 Bobtail Member

    9
    0
    Jan 27, 2013
    Bedford,Pa
    0
    problem fixed thanks
     
    sean1966, Jan 29, 2013
    sean1966, Jan 29, 2013
    #9
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