The Cummins ISX (now known as the X15) is a workhorse of the heavy-duty trucking industry. Whether you are rebuilding a 12.9L, 15L, or early EGR engine in your garage or performing a bottom-end overhaul in a professional shop, getting the torque specifications right is not just important—it is critical for engine survival.
| Step | Action | Specification | | :--- | :--- | :--- | | | Initial Torque | 70 N·m (52 ft-lbs) | | Step 2 | Angle Torque | + 60° (60 degrees) | cummins isx main and rod bearings torque specs