Two tools needed for the valve seal work are the
Spark Plug port adapter (J 22794) and valve spring compressor (J 38606). You must remove the
Rocker Arm first and detach the Spark Plug wire at the plug before twisting the boot 1/2 turn and carefully pulling the wire from its base. Begin your work only when the engine has cooled down. Then gently unwind the Spark Plug 1 or 2 turns. Clean all dirt that has built up around it. Attach the Spark Plug port adapter into the Spark Plug hole to keep valves open while compressed air blows through a connected air hose. Using valve spring compressor j 38606 compressed the valve spring so the technician could remove valve stem keys 225 and safely let tension go before tool removal. First take off the valve spring cap (224), valve spring (223), Valve Stem Oil Seal (222), and valve (228). Apply clean engine oil to the valve seat area before lubricating both valve guide and Valve Stem Oil Seal with oil for easy installation. Put valves (228) in designated ports and layer on the Valve Stem Oil Seal (222) below the valve spring (223) and valve spring cap (224). Press down the valve spring using the valve spring compressor j 38606 tool before setting the valve keys into position. Apply grease at both ends of the keys to hold them in place and ensure the grooves on the valve stem receive them correctly. Adjust valve pressure with the compressor tool and separator and let the spring release. Remove the compressor along with additional steps to seat the valve keys if necessary. After removing the Spark Plug port adapter (J 22794) put the hand started Spark Plug into the port and tighten it to 15 n.m (11 lb ft). Put
Spark Plug Wires back on their fitting at the ignition coil and the Spark Plug. Also check if all connections are properly seated by pressing each wire boot side-to-side before installing loose ones now. Fit the Rocker Arm into place.