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C15 noise in motor

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by anthonyar4, Nov 27, 2020.

Page 1 of 3
  1. Nov 27, 2020 #1
    anthonyar4

    anthonyar4 Medium Load Member

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    anthonyar4, Nov 27, 2020
    anthonyar4, Nov 27, 2020
    #1
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  3. Nov 27, 2020 #2
    anthonyar4

    anthonyar4 Medium Load Member

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    What could it be?
     
    anthonyar4, Nov 27, 2020
    anthonyar4, Nov 27, 2020
    #2
  4. Nov 27, 2020 #3
    Allinone777

    Allinone777 Bobtail Member

    11
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    Nov 2, 2020
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    Check pulley belt tensioner
     
    Allinone777, Nov 27, 2020
    Allinone777, Nov 27, 2020
    #3
  5. Nov 27, 2020 #4
    anthonyar4

    anthonyar4 Medium Load Member

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    I don’t have one on this.
     
    anthonyar4, Nov 27, 2020
    anthonyar4, Nov 27, 2020
    #4
  7. Nov 27, 2020 #5
    anthonyar4

    anthonyar4 Medium Load Member

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    2004 western star 4900 c15 just has a bolt that is used to tighten it but that broke.
     
    anthonyar4, Nov 27, 2020
    anthonyar4, Nov 27, 2020
    #5
  8. Nov 27, 2020 #6
    anthonyar4

    anthonyar4 Medium Load Member

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    So I just un-bolt the bracket and lift it up to tighten.
     
    anthonyar4, Nov 27, 2020
    anthonyar4, Nov 27, 2020
    #6
  9. Nov 27, 2020 #7
    anthonyar4

    anthonyar4 Medium Load Member

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    I get up to the motor and it sounds fine.
     
    anthonyar4, Nov 27, 2020
    anthonyar4, Nov 27, 2020
    #7
  10. Nov 27, 2020 #8
    AModelCat

    AModelCat Road Train Member

    29,598
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    Canuckistan
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    You sure there isn't a tensioner pulley on the passenger side of the truck? Last MBN I worked on had a tensioner pulley there. you had to loosen off the bolts and then slip a 1/2" drive ratchet into the square in the tensioner plate in order to tighten the belts.
     
    AModelCat, Nov 27, 2020
    AModelCat, Nov 27, 2020
    #8
    bzinger Thanks this.
  11. Nov 27, 2020 #9
    anthonyar4

    anthonyar4 Medium Load Member

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    No there isn’t. I was surprised too. Unless the guy took it off there isn’t one.
     
    anthonyar4, Nov 27, 2020
    anthonyar4, Nov 27, 2020
    #9
  12. Nov 27, 2020 #10
    062

    062 Road Train Member

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    Oct 20, 2013
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    If you have the old style with the adjusting rod behind the bracket, then you’ll need a small jack. I use a scissor jack in between the pulleys.
     
    062, Nov 27, 2020
    062, Nov 27, 2020
    #10
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