These tools are needed for Valve Stem Oil Seal service and Valve Stem Oil Seal replacement together with valve spring changing:
Spark Plug port adapter (J 23590), valve spring compressor (J 38606), and valve stem seal installer (J 42863). Start by spinning the engine to place the piston at top dead center in the cylinder before servicing to avoid dropping the valve within. Pull both valve
Rocker Arms and push rods first and then remove the spark plugs. Connect the Spark Plug port adapter j 23590 to the Spark Plug port and use compressed air to hold the valves in position. Use the valve spring compressor (J 38606) to hold down the valve spring then install it. First remove all valve locks then push out valve spring and cap before taking out the Valve Stem Oil Seal. Apply light hand pressure to set the new Valve Stem Oil Seal properly onto the valve guide. Set the oil seal onto the valve guide before using the valve stem seal installer (J 42863) to locate the Valve Stem Oil Seal properly. Use the valve spring compressor once more to put back the valve spring on the tool. Inset the valve spring and cap then position the valve locks in their right places. Take off air pressure and the Spark Plug port adapter (J 23590) while letting go of the valve spring. Put the spark plugs back into position and connect both the valve rocker arms and the push rod(s).