Sierra 1500 4WD V8-4.8L VIN V (2004)
Valve Guide Seal: Service and Repair
Valve Stem Oil Seal and Valve Spring Replacement
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Tools Required
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J 22794 Spark Plug Port Adapter
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J 38606 Valve Spring Compressor
Removal Procedure
1. Remove the valve rocker arm.
2. Disconnect the spark plug wire at the spark plug.
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Twist each plug wire boot 1/2 turn.
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Pull only on the boot in order to remove the wire from the spark plug.
3. Important:
Remove the spark plugs from the cylinder head with the engine at room temperature.
Loosen the spark plug 1 or 2 turns.
4. Brush or air blast away any dirt or debris from around the spark plug.
5. Remove the spark plug.
6. Install J 22794 into the spark plug hole.
7. Attach an air hose to J 22794.
8. Apply compressed air to J 22794 in order to hold the valves in place.
