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MX 13 belt tensioner

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by insanityeight, Oct 19, 2018.

  1. Oct 19, 2018 #1
    insanityeight

    insanityeight Light Load Member

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    Jul 26, 2013
    birmingham al
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    Mine are tilted a little and have still managed to last a year with obvious wear issues. Does the entire contraption need replaced or is it normally just the black pulley that needs replaced. Thanks in advance.
     
    insanityeight, Oct 19, 2018
    insanityeight, Oct 19, 2018
    #1
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  3. Oct 19, 2018 #2
    Goodysnap

    Goodysnap Road Train Member

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    The tensioner itself is worn at the pivot. They go crooked often and have a very short life span.
     
    Goodysnap, Oct 19, 2018
    Goodysnap, Oct 19, 2018
    #2
    spsauerland, BoxCarKidd and insanityeight Thank this.
  4. Oct 19, 2018 #3
    insanityeight

    insanityeight Light Load Member

    287
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    Jul 26, 2013
    birmingham al
    0
    So guess I'll be buying two tensioners. I believe the dealer said the bigger one was like $300 or that might have been for the pair. Thanks for the comeback
     
    insanityeight, Oct 19, 2018
    insanityeight, Oct 19, 2018
    #3
  5. Oct 20, 2018 #4
    JohnC123

    JohnC123 Light Load Member

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    Jan 25, 2018
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    EPA 2010 MX- Tensioner bolts through a separate bracket that has an idler pulley mounted, and as an assembly is mounted to the front of the engine. I'm guessing they assume one is indicative of the other (aluminum) and certainly makes them money. The alternative though can be costly if it were to come apart at highway speed.
     
    JohnC123, Oct 20, 2018
    JohnC123, Oct 20, 2018
    #4
    insanityeight Thanks this.
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