Cummins Isx Main And Rod Bearings Torque Specs New

| Component | Step 1 (Ft-Lbs) | Step 2 (Ft-Lbs or Degrees) | Notes | | :--- | :--- | :--- | :--- | | Main Caps (Standard) | 50 ft-lbs | 120 ft-lbs | Center-out sequence | | Main Caps (New/Angle) | 55 ft-lbs | + 90 Degrees | Center-out sequence | | Rod Caps (Standard) | 35 ft-lbs | 80 ft-lbs | Alternate bolts evenly | | Rod Caps (New/Angle) | 22 ft-lbs | + 60 Degrees | Check bolt packaging |

| Component | Specification | | --- | --- | | Bolt type | M16 x 2.0 Property Class 10.9 (Wet torque) | | Lubrication | Clean 15W-40 engine oil (not assembly lube on threads) | | Step 1 Torque | 90 lb-ft (122 N·m) | | Step 2 Torque | 130 lb-ft (176 N·m) | | Step 3 (Final) | Angle-turn +90 degrees | cummins isx main and rod bearings torque specs new

Note: On older ISX CM570/CM870, the final step may be +60 degrees instead of 90. Check your engine serial number. | Component | Step 1 (Ft-Lbs) | Step

| Step | Action | Specification | | --- | --- | --- | | 1 | Clean threads & underhead | No debris. Light engine oil only. | | 2 | Initial torque | 43 lb-ft (58 N·m) | | 3 | Final torque | Angle-turn + 60 degrees (Do not exceed 75 degrees) | Note: On older ISX CM570/CM870, the final step

Important: Some early ISX (CM570/870) used a non-TTY bolt. For those: torque is 84 lb-ft + 30 degrees. Verify your bolt length.