Detroit 12.7 bull gear

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Detroit series60, Dec 24, 2020.

  1. Detroit series60

    Detroit series60 Bobtail Member

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    Dec 9, 2020
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    Does anyone know the size of the socket for a 2003 Detroit 12.7 DDEC 4 bull gear? (The left hand threaded nut that holds it in) I’ve tried 3 1/4 like others have told me but it doesn’t fit
     
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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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    Put a tape measure on it
     
    AModelCat Thanks this.
  4. Rideandrepair

    Rideandrepair Road Train Member

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