Valve Spring: Service and Repair

Valve Stem Oil Seal and Valve Spring Replacement

Tools Required
^ J 8062 Valve Spring Compressor
^ J 26999-20 Valve Stem Oil Seal Remover
^ J 44640 Valve Stem Seal Installer

Removal Procedure

Caution: Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys. Failing to use care may cause personal injury.




1. Remove the cylinder head.
2. Using the J 8062, compress the valve spring.




3. Remove the valve keys (1) from the valve stem.
4. Remove the J 8062 from the cylinder head.
5. Remove the valve spring upper seat (2).
6. Remove the valve spring (3).
7. Remove the valve stem oil seal (4) using the J 26999-20.
8. Remove the valve spring lower seat (5).
9. Continue removing the necessary components using the above procedure.

Installation Procedure





Important: Lubricate the valve stem with clean engine oil prior to installing the lower seat.

1. Install the valve spring lower seat.




2. Install the valve stem using the J 44640.
3. Install the valve spring with the painted end towards the cylinder head.
4. Install the valve spring upper seat.




5. Using the J 8062, compress the valve spring.
6. Install the valve keys.
7. Remove the J 8062 from the cylinder head.




8. Measure the valve installed height using a ruler. Measure from the base of the valve spring to the top of the valve. Refer to Engine Mechanical Specifications.
9. Install the remaining spring and other components as necessary.
10. Install the cylinder head.