Valve Spring: Service and Repair

Valve Stem Oil Seal and Valve Spring Replacement

Special Tools
* J-8062 - Valve Spring Compressor
* J-44640 - Valve Stem Seal Installer

For equivalent regional tools, refer to Special Tools (Special Tools).

Removal Procedure

Warning

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. Refer to Cylinder Head Replacement - Left Side (Cylinder Head Replacement - Left Side) and/or Cylinder Head Replacement - Right Side (Cylinder Head Replacement - Right Side).
2. Using the J-8062 - compressor , compress the valve spring.




3. Remove the valve keys (1) from the valve stem.
4. Remove the J-8062 - compressor 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).
8. Remove the valve spring lower seat (5).
9. Continue removing the necessary components using the above procedure.

Installation Procedure





Note: 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 - installer.
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 - compressor , compress the valve spring.
6. Install the valve keys.
7. Remove the J-8062 - compressor 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 (Service Limits & General Specifications).
9. Install the remaining spring and other components as necessary.
10. Install the cylinder head. Refer to Cylinder Head Replacement - Left Side (Cylinder Head Replacement - Left Side) and/or Cylinder Head Replacement - Right Side (Cylinder Head Replacement - Right Side).