gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Valve Spring|Service Precautions|Page 4783 > < Valve Spring|Service Precautions
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Valve Spring: Service and Repair

Valve Stem Oil Seal and Valve Spring Replacement

Tools Required

*

EN 46547 Flywheel Holding Tool

*

J 38820 Valve Stem Seal Installer

*

J 39313 Spark Plug Port Adapter

*

J 43059 Valve Retainer Remover/Installer

*

J-44228-A Valve Spring Compressor

Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (See: Maintenance/Vehicle Lifting/Service and Repair).
2. Remove the service slot plug.

3. Install the EN 46547 (1) into the flywheel teeth.
4. Lower the vehicle.
5. Remove the camshafts. Refer to Camshaft Replacement (See: Camshaft, Lifters and Push Rods/Camshaft/Service and Repair).
6. Remove the spark plugs. Refer to Spark Plug Replacement (See: Tune-up and Engine Performance Checks/Spark Plug/Service and Repair).

Valve Spring|Service Precautions|Page 4783 > < Valve Spring|Service Precautions