1. Get a vibratech damper. If there is 500,000 miles on the ones you have they are at the end of their life.
     
    Diesel Dave, Oxbow and SAR Thank this.
  2. The c-16 crank is different than 6nz and a-cert. Same stroke as a-cert but different rod bearing journals.
     
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  3. RollOut Transport

    RollOut Transport Bobtail Member

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    Aug 17, 2014
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    According to this the acert crank is the same as the C16 crank. Are they wrong?
    Caterpillar – Standard Crankshafts
    Scroll down towards the bottom.
     
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  4. Stroke is the same only.
     
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  5. RollOut Transport

    RollOut Transport Bobtail Member

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    I’m only asking because everything I’m finding on the internet says there the same. Can you point me in the right direction that says there different?
     
    Last edited: Nov 12, 2017
  6. Like I mentioned before the rod bearing journals are different. Not as wide as an a-cert, same diameter. The mains are the same for all 3406 series engines. If you have a c-16 crank you must use the c-16 rods and pistons and liners. The a-cert liners are the same all the way to the first e-model engines. The c-16 liners are a few mm larger bore for the larger diameter c-16 pistons.
     
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  7. RollOut Transport

    RollOut Transport Bobtail Member

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    Ok, So is it possible to mount the C-16 piston to the C-15 rod? Or is that different as well?
     
  8. SmokinCAT

    SmokinCAT Road Train Member

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    Oct 20, 2010
    Hillsboro, OH./ Adrian, MI
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    Yes, this is wrong. The C-16 crank uses the same rod journals as the 3406E/C-15.

    The rod journal on an acert 15.2L crank combined the journal diameter of the early narrow bearing cranks and the width of the later wide bearing cranks.
     
    E model Cat man, Oxbow and SAR Thank this.
  9. NO!
     
  10. E model Cat man

    E model Cat man Light Load Member

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    Jun 10, 2014
    Northern Maine
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