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Squealing

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Samot, May 22, 2019.

  1. May 22, 2019 #1
    Samot

    Samot Bobtail Member

    44
    7
    Mar 5, 2009
    Georgia
    0
    I have a 2004 Pete dump truck with a C13. I can’t figure out where this squealing is coming from. I’ve put on a new AC compressor, belt, tensioner and a fan hub. I brought it somewhere and they vacuumed the freon out and supposedly flushed the system. They changed the orfice tube and when I picked it up it didn’t make a sound at all for the first 24 hours but it’s back. Any suggestions ?
     
    Samot, May 22, 2019
    Samot, May 22, 2019
    #1
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  3. May 22, 2019 #2
    spsauerland

    spsauerland Road Train Member

    4,296
    10,887
    May 31, 2010
    West Harrison, In
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    Check both of idler pulley? What brand of belt?
     
    spsauerland, May 22, 2019
    spsauerland, May 22, 2019
    #2
    Oxbow Thanks this.
  4. May 22, 2019 #3
    Samot

    Samot Bobtail Member

    44
    7
    Mar 5, 2009
    Georgia
    0
    Yes to both pulleys. Not sure on the brand of belt but this is the second belt I’ve tried just for haha. It seems to do when the AC kicks in ?
     
    Samot, May 22, 2019
    Samot, May 22, 2019
    #3
  5. May 22, 2019 #4
    lwlevens

    lwlevens Medium Load Member

    623
    427
    Feb 9, 2018
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    Maybe it's the a/c compressor then
     
    lwlevens, May 22, 2019
    lwlevens, May 22, 2019
    #4
  7. May 22, 2019 #5
    spsauerland

    spsauerland Road Train Member

    4,296
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    May 31, 2010
    West Harrison, In
    0
    You have a picture of how you have the belt routed? Used to have trouble with the same setup and the cure was Goodyear/Continental gator back belts.
     
    spsauerland, May 22, 2019
    spsauerland, May 22, 2019
    #5
    Oxbow Thanks this.
  8. May 23, 2019 #6
    Deere hunter

    Deere hunter Road Train Member

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    Aug 5, 2017
    Shallowater Texas
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    Compressor may be trying to lock up after it builds pressure !
     
    Deere hunter, May 23, 2019
    Deere hunter, May 23, 2019
    #6
    x1Heavy Thanks this.
  9. May 26, 2019 #7
    Mr Bob

    Mr Bob Light Load Member

    262
    81
    Mar 17, 2015
    0
    Yup sounds like you need to pressure test the A / C system
     
    Mr Bob, May 26, 2019
    Mr Bob, May 26, 2019
    #7
    x1Heavy Thanks this.
  10. May 26, 2019 #8
    x1Heavy

    x1Heavy Road Train Member

    34,017
    42,135
    Mar 5, 2016
    White County, Arkansas
    0
    Yes please pressure test it. Check and see if your belts are enduring being slipped across something that is not rolling with the belt. Any kind of noise from there like squealing is telling you shes hurting somewhere. Either at the compressor or one of the rollers around the path for the engine belt.
     
    x1Heavy, May 26, 2019
    x1Heavy, May 26, 2019
    #8
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