Retighten in numerical sequence to 52 ft-lb (70 N•m). Step 4: Verify the torque in sequence is still at 52 ft-lb .
Cummins ISX Main and Rod Bearings Torque Specs (New Bolts) Ensuring proper torque on the main and rod bearings of a is critical to its longevity and performance, particularly when rebuilding or performing an in-frame overhaul. The Cummins ISX, including the CM870, CM871, and X15 platforms, uses a torque-turn (or torque-angle) method for connecting rod and main bearing bolts. Using new bolts is standard practice to maintain clamping pressure, which is crucial for these high-torque fasteners. cummins isx main and rod bearings torque specs new