C15 noise in motor

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

  1. anthonyar4

    anthonyar4 Medium Load Member

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  3. anthonyar4

    anthonyar4 Medium Load Member

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  4. Allinone777

    Allinone777 Bobtail Member

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    Check pulley belt tensioner
     
  5. anthonyar4

    anthonyar4 Medium Load Member

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    I don’t have one on this.
     
  6. 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.
     
  7. anthonyar4

    anthonyar4 Medium Load Member

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    So I just un-bolt the bracket and lift it up to tighten.
     
  8. anthonyar4

    anthonyar4 Medium Load Member

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    I get up to the motor and it sounds fine.
     
  9. AModelCat

    AModelCat Road Train Member

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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.
     
    bzinger Thanks this.
  10. 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.
     
  11. 062

    062 Road Train Member

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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.
     
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