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2013 cascadia air leak

Discussion in 'Freightliner Forum' started by Firedawg11, Apr 23, 2016.

  1. Apr 23, 2016 #1
    Firedawg11

    Firedawg11 Bobtail Member

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    air won't build up past 70 psi when idle and when driving won't build past 100 psi... Can hear air pissing out near engine but can't determine where... Any ideas where to look? Thanks in advance
     
    Firedawg11, Apr 23, 2016
    Firedawg11, Apr 23, 2016
    #1
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  3. Apr 23, 2016 #2
    Instinktz

    Instinktz Bobtail Member

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    Apr 3, 2016
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    Look by the firewall and check under your air dryer. Check while brakes are released holding thw brakes and not holding the brakes. Could be the compressor hose too. Get someone to help you for a quick minute. Try to get a spray bottle of water and you'll be able to feel leaking air without gloves on
     
    Instinktz, Apr 23, 2016
    Instinktz, Apr 23, 2016
    #2
  4. Apr 23, 2016 #3
    Firedawg11

    Firedawg11 Bobtail Member

    32
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    Feb 13, 2016
    0
     
    Firedawg11, Apr 23, 2016
    Firedawg11, Apr 23, 2016
    #3
  5. Apr 23, 2016 #4
    Firedawg11

    Firedawg11 Bobtail Member

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    Copy will check in a few, ever since a heavy load it happened thanks for info
     
    Firedawg11, Apr 23, 2016
    Firedawg11, Apr 23, 2016
    #4
  7. Apr 23, 2016 #5
    AModelCat

    AModelCat Road Train Member

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    Try and hook shop air to supply tank (avoid going higher than 130 psi), turn key on in truck but leave engine off. Lots of air to find the leak and no engine noise to drone it out.
     
    AModelCat, Apr 23, 2016
    AModelCat, Apr 23, 2016
    #5
  8. Apr 23, 2016 #6
    Firedawg11

    Firedawg11 Bobtail Member

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    Feb 13, 2016
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    Been looking all over and I can't not find the air dryer, been underneath, bulkhead sounds like a leak somewhere in engine but I can't see it or feel it
     
    Firedawg11, Apr 23, 2016
    Firedawg11, Apr 23, 2016
    #6
  9. Apr 23, 2016 #7
    Firedawg11

    Firedawg11 Bobtail Member

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    Feb 13, 2016
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    Never mind found air dryer but nothing sounds like leak
     
    Firedawg11, Apr 23, 2016
    Firedawg11, Apr 23, 2016
    #7
  10. Apr 23, 2016 #8
    Instinktz

    Instinktz Bobtail Member

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    Apr 3, 2016
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    So you can't hear a leak? If not it maybe your governor.
     
    Instinktz, Apr 23, 2016
    Instinktz, Apr 23, 2016
    #8
  11. Apr 23, 2016 #9
    Firedawg11

    Firedawg11 Bobtail Member

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    Turns out it's the discharge line that had a hole in it, it's tucked away under trucks, mechanics working it right now
     
    Firedawg11, Apr 23, 2016
    Firedawg11, Apr 23, 2016
    #9
    Instinktz Thanks this.
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