Valve Spring: Service and Repair

Valve Stem Oil Seal and Valve Spring Replacement

^ Tools Required
- J 22794 Spark Plug Port Adapter
- J 38606 Valve Spring Compressor

Removal Procedure

Important:
^ Before you remove the valve keys, rotate the engine so that the piston in the cylinder you are working on is at Top Dead Center (TDC). This will eliminate the possibility of the valve accidentally falling inside the cylinder.
^ Do not loosen or remove the spark plug when the engine is hot.
^ Loosen the spark plug, and clean any dirt and debris from the spark plug recess area before removing.

1. Remove the spark plug.
2. Install the J 22794 into the spark plug port. Apply compressed air in order to hold the valves in place.
3. Remove the rocker arm.





4. Compress the valve spring with the J 38606.





5. Remove the valve keys.
6. Remove the valve cap.
7. Remove the valve spring.
8. Inspect the valve spring for damage. Replace the spring if it is damaged.
9. Remove the spring seal/valve stem oil seal.

Installation Procedure





1. Install the valve stem oil seal/spring seat.
^ Use a suitable driver.
^ Press over the valve guide boss.
2. Install the valve spring.
3. Install the valve cap.





4. Use the J 38606 in order to compress the valve spring.
5. Install the valve keys. If necessary, hold the valve keys in place with grease.
6. Remove the J 38606 in order to release the valve spring.
7. Ensure that the valve keys are seated.
8. Install the valve rocker arm.
9. Release the air pressure and remove the J 22794.
10. Install the spark plug.