Torque Spec For Flywheel Bolts On Isx Cummins 251 Updated Work

Use clean engine oil (typically 15W-40) on the bolt threads and the underside of the bolt heads before installation. Do not use thread locker (Loctite) unless specifically directed by an updated technical bulletin for your exact Serial Number. Flywheel Housing & Components

Over-torquing (exceeding 300 lb-ft or 120° angle) will stretch the bolt beyond yield. The bolt will snap the next time you engage the clutch at 1,800 RPM. torque spec for flywheel bolts on isx cummins 251 updated