Loosen the valve and injector adjusting screw lock nuts on each rocker lever.

Turn the adjusting screws counterclockwise until the rocker levers are loose.

CAUTION  Do not attempt to remove or install the rocker lever shaft assemblies without resetting the lash.

Remove the rocker lever shaft capscrews and the rocker lever shaft assemblies.

NOTE: To prevent increased wear, mark each rocker lever as it is removed so it can be installed back in its original location.

Remove the rocker levers from the shaft.

Remove the lock nuts and the adjusting screws from the rocker lever.

NOTE: To prevent increased wear, mark each adjusting screw as it is removed so it can be installed back in its original rocker lever.