Jeep KJ 3.7L 2005

Discussion in 'KJ General Discussion' started by Peter M, Sep 21, 2020.

  1. Peter M

    Peter M New Member

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    Greetings from the UK,

    Looking for help in obtaining the bolt size and type for the belt tensioner. I was going to replace the tensioner and belt only to find its rounded, got a mechanic coming Thursday to sort this but need to get replacement bolt.

    Any help will be greatly appreciated.
     
  2. Gyro

    Gyro Full Access Member

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    3.7 gas Part # 06504930AA size M10x1.5x70
    2.8 diesel Part # 05015612AB
    Gyro
     
    Last edited: Sep 21, 2020
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  3. Peter M

    Peter M New Member

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    Hi Gyro,

    much appreciated, thank you.

    P
     
  4. Billwill

    Billwill Full Access Member

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    I believe on the CRD the Tensioner Pulley Bolt is a Left Hand Thread....or one of the other pullies has it!

    I have not personally changed the Serpentine Belt on my CRD...had the Dealers replace it and the cam belt every six years!

    Do not know if the Gassers have a Left-Hand-Thread Bolt on the Tensioner but that would be a good reason for a rounded-off Bolt Head!

    I will let the Experts on the 3.7 gasser here chip in.!;)
     
    Last edited: Sep 23, 2020
  5. Peter M

    Peter M New Member

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  6. Peter M

    Peter M New Member

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    Thanks for that information, I will also purchase left hand thread bolts to be on the safe side, better to be prepared.

    P
     
  7. Billwill

    Billwill Full Access Member

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    No let me look up the procedure for replacing the Serpentine bolt in the Manuals...they do point out when a bolt is a Left-Hand-Thread.
    You need to get the correct strength bolt in any case and these Left-Hand Thread bolts are hard to find.;)
     
  8. Billwill

    Billwill Full Access Member

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    Ok the Service Manual for the 3.7 Gasser makes no mention of the mounting bracket being held on by a Left-Hand-Drive bolt for the tensioner assembly.

    Go to section 7 Cooling Accesories for the 2005 3.7 Service manuals.

    The tensioner itself is spring-loaded and must not be taken apart!

    The idler pulleys are stated as being Left-Hand-Threads.

    www.colorado4wheel.com/manuals/Jeep/KJ/
     
    Last edited: Sep 23, 2020