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

1. Remove the rocker arm.
2. Remove the spark plug.

Important: Before you remove the valve keys, rotate the engine so that the piston in the cylinder you are working on is at (TDC) top dead center. This will eliminate the possibility of the valve accidentally falling inside the cylinder.

3. Install the J 22794 into the spark plug port. Apply compressed air in order to hold the valves in place.




4. Compress the valve spring with the J 38606 .




5. Remove the valve keys (2).
6. Remove the valve spring cap (3).
7. Remove the valve spring (4).
8. Inspect the valve spring for damage. Replace the spring if it is damaged.
9. Remove the spring seat/valve stem oil seal (5).

Installation Procedure




1. Install the valve stem oil seal/spring seat (5).

* Use a suitable driver.
* Press over the valve guide boss.

2. Install the valve spring (4).
3. Install the valve spring cap (3).




4. Compress the valve spring using the J 38606 .
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. Release the air pressure and remove the J 22794 .
9. Install the valve rocker arm.
10. Install the spark plug.