Cummins 4BT – Camshaft Gear – Replacement – Cleaning and Inspection

Inspect the camshaft bore for fretting or burrs.
NOTE: If the fretting, burrs or raised material cannot be removed with Scotch-Brite® 7448 or equivalent, replace the
camshaft gear.

Inspect the camshaft gear keyway for burrs.
Remove burrs with Scotch-Brite® 7448, or equivalent.
NOTE: If the keyway is damaged or the burrs cannot be removed, the camshaft gear must be replaced

Visually inspect the camshaft nose for fretting or burrs.
NOTE: If fretting or burrs cannot be removed with Scotch-Brite® 7448, or equivalent, replace the camshaft.