DDEC2 12.7 oil fill plug size

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Nov 5, 2022.

  1. mile marker 27

    mile marker 27 Road Train Member

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    Guess it didn’t get tightened good enough, so here I am. Not around the truck at the moment to measure. Anybody know what size?
     
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  3. Big Road Skateboard

    Big Road Skateboard Road Train Member

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  4. ibcalm19

    ibcalm19 Road Train Member

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    It's between 1 1/4" to 1 1/2" try a wing nut test plug from lowes or home depot for a temporary until you get a new one. Screenshot_20221105_105949.jpg
     
  5. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Sheet, he did say fill plug. I'm an idiot
     
    JoeyJunk Thanks this.
  6. mile marker 27

    mile marker 27 Road Train Member

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    Found a bad B model Cat and it’s plug fit perfect. That ought to make that 12.7 hump better!!
     
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