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What are the cylinder head torque settings for a Cummings ISX 500?

The cylinder head torque settings for a Cummings ISX 500 are as follows:

- For the cylinder head bolts, the initial torque is 66 lb-ft (90 Nm).

- After the initial torque, you should loosen all cylinder head bolts 180 degrees, then retorque to specifications, then turn an additional 90 degrees.

- After the final turn, ensure that the oil film has been removed from under all bolt washers/heads and inspect bolts to be dry with a clean bolt thread. Ensure no lubricant on washers as they are dry seated. (Torque: 295 lb-ft) (397 Nm)