Flywheel Runout Check

1. Push the flywheel forward.





2. Install the special tool against the flywheel face 25 mm (1 inch) from the outer edge of the flywheel. Zero the dial indicator.





3. Turn the flywheel one complete revolution while observing the Total Indicator Runout (TIR). The flywheel TIR must not exceed the specification.
^ If the flywheel TIR does not exceed the specification, proceed to the next step in this procedure to check the ring gear runout.
^ If the flywheel TIR exceeds the specification, remove the flywheel. Check for burrs between the flywheel and the crankshaft mounting flange. If burrs exist, remove them. Check the crankshaft flange runout.
^ If the crankshaft flange TIR does not exceed specification, and no burrs were found between the flywheel and the crankshaft mounting flange, resurface the flywheel or install a new flywheel.
^ If the crankshaft flange TIR does not exceed specification, but burrs were removed from between the flywheel and the crankshaft mounting flange, reinstall the flywheel. Recheck the flywheel runout. If the flywheel TIR exceeds the specification, resurface the flywheel or install a new flywheel.
^ If the crankshaft flange TIR exceeds specification, repair as necessary. Reinstall the flywheel. Recheck the flywheel runout. If the flywheel TIR exceeds the specification, resurface the flywheel or install a new flywheel.





4. Install the special tool against the ring gear face adjacent to the teeth. Zero the dial indicator.





5. Turn the flywheel one complete revolution while observing the Total Indicator Runout (TIR). The ring gear TIR must not exceed the specification.
^ If the ring gear TIR exceeds the specification, install a new flywheel and ring gear assembly.