This article w How to disassemble Cummins M11 engine engine accessories

 ① Close the coolant valve and use a wrench (part number 3376807) to remove the coolant filter, see Figure 2-7.  

② Use the oil filter wrench to remove the oil filter, see Figure 2-8.

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  ③ Use a wrench (part number 3376807) to remove the fuel filter, see Figure 2-9. ④ Loosen the locking nut on the fan idler pulley shaft, rotate the adjusting screw to release the tension of the transmission belt, and remove the fan drive belt, see Figure 2-10.

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  ⑤ If an electronic fan clutch is used, remove the fan clutch connector from the wiring harness, see Figure 2-11.  

⑥Remove the 6 bolts and fan, see Figure 2-12.

  ⑦ Remove the 4 bolts and fan pulley, see Figure 2-13.