Here is the numerical order (assuming main caps are numbered 1 front to 7 rear):
On CM2250 and CM2350 engines, stiffener bolts are . They stretch permanently. Reusing them leads to under-clamping, which allows the main caps to walk. Result: Crankshaft failure. cummins isx block stiffener torque specs
Respect the torque spec, respect the sequence, and your ISX will reward you with hundreds of thousands of miles of reliable service. Here is the numerical order (assuming main caps
When installing block stiffeners on the Cummins ISX engine, it is essential to follow the recommended torque specifications to ensure proper installation and function. The Cummins ISX block stiffener torque specs vary depending on the specific engine model and stiffener design. However, here are some general guidelines: Result: Crankshaft failure
Generally, capscrews should be lubricated with clean engine oil before installation unless specified otherwise by the service manual. torque sequence
| Fastener Description | Torque Spec (Nm) | Torque Spec (ft-lbs) | Additional Turn | |----------------------|------------------|----------------------|------------------| | | 107 Nm | 79 ft-lbs | None (direct torque) | | Stiffener to Main Cap (M14 center bolts) | 190 Nm | 140 ft-lbs | None | | Side Bolts (M10 - outer row) | 75 Nm | 55 ft-lbs | None | | Main Cap Studs (if equipped) | 245 Nm | 180 ft-lbs | + 90 degrees |
The torque specification for the Cummins ISX/X15 block stiffener Go to product viewer dialog for this item.