Valve Spring: Service and Repair

Valve Stem Oil Seal and Valve Spring Replacement
Tools Required
^ J22794 Spark Plug Port Adapter
^ J38606 Valve Spring Compressor

Removal Procedure





1. Remove the valve rocker arm.

2. Important: Remove the spark plugs from the cylinder head with the engine at room temperature.

Loosen the spark plug 1 or 2 turns.
3. Brush or air blast away any dirt or debris from around the spark plug.
4. Remove the spark plug.





5. Install the J22794 into the spark plug hole.
6. Attach an air hose to the J22794.
7. Apply compressed air to the J22794 in order to hold the valves in place.





8. Using the J38606 compress the valve spring.





9. Remove the valve stem keys (225).
10. Using the J38606 carefully release the valve spring tension.
11. Remove the J38606.
12. Remove the valve spring cap (224).
13. Remove the valve spring (223).
14. Remove the valve stem oil seal (222).

Installation Procedure





1. Clean the cylinder head valve spring seat and area.
2. Install the valve stem oil seal (222).
3. Install the valve spring (223).
4. Install the valve spring cap (224).





5. Compress the valve spring using the J38606.
6. Install the valve stem keys.
1. Use grease in order to hold the valve stem keys in place.
2. Make sure the keys seat properly in the groove of the valve stem.
3. Using the J38606 carefully release the valve spring tension, making sure the valve stem keys stay in place.
4. Remove the J38606.
5. Tap the end of the valve stem with a plastic faced hammer to seat the keys, if necessary.





7. Remove the compressed air supply from the J22794.
8. Remove the J22794 from the spark plug port.





9. Notice: Refer to Fastener Notice in Service Precautions.

Hand start the spark plug.
Tighten the spark plug to 15 Nm (11 ft. lbs.).
10. Install the valve rocker arm.