Engine - Valve Stem Oil Seal and Spring Replacement

File In Section: 06 - Engine/Propulsion System

Bulletin No.: 01-06-01-021

Date: September, 2001

SERVICE MANUAL UPDATE

Subject:
Valve Stem Oil Seal and Valve Spring Replacement Procedure

Models:
2001 Pontiac Grand Prix

This bulletin is being issued to add the Valve Stem Oil Seal and Valve Spring Replacement procedure in the Engine Mechanical - 3.1L sub-section of the Service Manual.

The following information has been added to SI2000. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.

Tools Required

^ J 22794 Spark Plug Port Adapter

^ J 38606 Valve Spring Compressor

Removal Procedure

Important:

^ Before you remove the valve locks, 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.

^ Break the spark plug loose, and clean any dirt or debris from the spark plug recess area before removing.

^ Do not remove the spark plug when the engine is hot.

1. Remove the spark plug from the cylinder that is being serviced. Refer to Spark Plug Replacement in Engine Controls - 3.1L.

2. Remove the rocker arm. Refer to Valve Rocker Arm and Push Rod Replacement.

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





4. Install the J 38606 on the valve spring.





5. Compress the valve spring with the J 38606.





6. Remove the valve locks.

7. Remove the valve cap.

8. Remove the valve spring.

9. Inspect the valve spring for damage. Refer to Cylinder Head Cleaning in Engine Mechanical - 3.1 L Unit Repair.

10. Remove the spring seat/valve stem oil seal.

Installation Procedure





1. Install the valve stem oil seal/spring seat.

2. Install the valve spring.

3. Install the valve cap.





4. Compress the valve using the J 38606.

5. Install the valve locks. If necessary, hold the valve locks in place with grease.





6. Release the valve spring locks.

7. Make sure that the valve locks are seated.

8. Release the air pressure and remove the J 22794 from the spark plug port.

9. Install the valve rocker arm. Refer to Valve Rocker Arm and Push Rod Replacement.

10. Install the spark plug. Refer to Spark Plug Replacement in Engine Controls - 3.1L.





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