Torque Spec For Flywheel Bolts On Isx Cummins 251 Updated ◎ < Recent >

The is unequivocally 265 lb-ft (359 Nm) with clean engine oil , plus an additional 90 degrees if you are using TTY bolts. Do not rely on old forum posts recommending 250 lb-ft. Cummins updated this specification to prevent flywheel loosening and crank flange cracking after 2019 field failures.

Always use a star or crisscross pattern to draw the flywheel evenly against the crankshaft. torque spec for flywheel bolts on isx cummins 251 updated

Ensure you are using the correct bolt: or 3683610 . Do not reuse old bolts. These are TTY; they stretch permanently. The is unequivocally 265 lb-ft (359 Nm) with