Valve Spring: Service and Repair

Valve Stem Oil Seal and Valve Spring Replacement

Tools Required
* J 43649 Valve Spring Compressor
* J 36017 Valve Guide Seal Remover
* J 43653 Flywheel Holding Tool

Removal Procedure

Important: Prevent the crankshaft from rotating clockwise or counterclockwise before using compressed air in the cylinder. Rotation of the crankshaft may cause damage to the J 43653.

1. If equipped with a manual transmission, leave the transmission in first gear with the vehicle on the ground and the parking brake set.
2. If equipped with an automatic transmission, remove the starter. Refer to Starter Motor Replacement (RPO LSJ) Starter Motor Replacement (RPOs L61/LE5).
3. Install the J 43653.
4. Remove the camshaft.




5. Remove the camshaft roller followers.




6. Install the J 43649 to the cylinder head.
7. Remove the spark plugs.




8. Install an air hose adaptor into the spark plug hole.
9. Pressurize the cylinder to 690 kPa (100 psi).
10. Compress the valve spring.
11. Remove the valve spring keepers.
12. Remove the valve spring.




13. Using the J 36017, remove the valve seal.

Installation Procedure




1. Using the J 36017, install the valve seal.




2. Install the valve spring.
3. Compress the valve spring.
4. Install the valve spring keepers.
5. Remove the air hose adaptor from the spark plug hole.




6. Remove the J 43649 from the cylinder head.
7. Install the spark plugs.




8. Install the camshaft roller followers.
9. Install the camshaft.
10. If removed, install the starter.
11. If used, remove the J 43653.