Detroit S60 12.7 injector advice

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by bruce25, Aug 14, 2020.

  1. bruce25

    bruce25 Light Load Member

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    Apr 16, 2014
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    I am changing out O rings on the injectors on S60 12.7 pre EGR. Do i need to install a small carbon washer on the tip of the injector? It came with the kit but i did not see a single one on mine when i pulled them out.
     
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  3. benjamin260_6

    benjamin260_6 Medium Load Member

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    Aug 8, 2012
    Ontario, Canada
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    They deteriorate in a few thousand miles. If you have them, put them in but it's more important that you put the fat o-ring in.
     
  4. bruce25

    bruce25 Light Load Member

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    Apr 16, 2014
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  5. Rideandrepair

    Rideandrepair Road Train Member

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    They use them to take up any minor damage to the cups. You can sometimes see a small amount of damage on the cups, sometimes a full or half circle, from the injector pounding it.
     
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