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Low pressure ac line breaks

Discussion in 'Kenworth Forum' started by CorinaTruck, May 14, 2016.

  1. May 14, 2016 #1
    CorinaTruck

    CorinaTruck Bobtail Member

    2
    0
    May 14, 2016
    0
    I have replaced the low pressure line 3 times on my 2014 W900. It breaks right where it connects to the compressor. Kenworth says it's a known problem but can't seem to help me fix it. Any ideas?
     
    CorinaTruck, May 14, 2016
    CorinaTruck, May 14, 2016
    #1
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  3. May 14, 2016 #2
    AModelCat

    AModelCat Road Train Member

    27,734
    145,354
    Jul 7, 2015
    Canuckistan
    0
    How is it breaking? Hose or the metal fitting? May have to fabricate a support bracket to take some of the stress. Do you have photos of the compressor and hose?
     
    AModelCat, May 14, 2016
    AModelCat, May 14, 2016
    #2
  4. May 14, 2016 #3
    CorinaTruck

    CorinaTruck Bobtail Member

    2
    0
    May 14, 2016
    0
    It breaks right above where it clamps to the compressor. The line is fully supported with brackets and I have made sure there is no bind. Kenworth says it is an ongoing problem.
     

    Attached Files:

    CorinaTruck, May 14, 2016
    CorinaTruck, May 14, 2016
    #3
  5. May 14, 2016 #4
    bigmotor1212

    bigmotor1212 Light Load Member

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    363
    Dec 20, 2014
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    Could the hard line be too rigid? Maybe it needs a piece of rubber line crimped in it to allow for the engine movement?
     
    bigmotor1212, May 14, 2016
    bigmotor1212, May 14, 2016
    #4
  7. May 14, 2016 #5
    kwcam

    kwcam Light Load Member

    193
    145
    Dec 29, 2012
    at the shop
    0
    We have that issue with our trucks, seems some guys pull themselves up by grabbing that line.
    The shop we use for our espars heaters does a/c as well, they have made new lines with just a sort 90* fitting to replace the oem line. now we have not had anymore problems.... with that line.
     
    kwcam, May 14, 2016
    kwcam, May 14, 2016
    #5
    CorinaTruck Thanks this.
  8. Jun 5, 2016 #6
    Old Man

    Old Man Road Train Member

    4,597
    13,466
    Apr 3, 2009
    Oklahoma City, OK
    0
    Have a independent ac shop make you a line.
    I know where ther is a good one in OKC a mile from the petro
     
    Old Man, Jun 5, 2016
    Old Man, Jun 5, 2016
    #6
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