You can remove the valve rocker arm covers, and the spark plugs, install the J 22794 into the spark plug hole, apply compressed air to hold the valves in place, install the valve rocker arm nut, compress the valve spring, remove the valve stem keys, release the valve spring tension, remove the J 5892-D or the J 38606, the valve spring cap and valve spring, the
Valve Stem Oil Seal.