LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 594 (Engine Mechanical - 3.4L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Stem Oil Seal and Valve Spring Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT:
    • Before you remove the valve keys, rotate the engine so that the piston in the cylinder you are working on is at (TDC) top dead center. This will eliminate the possibility of the valve accidentally falling inside the cylinder.
    • Do not loosen or remove the spark plug when the engine is hot.
    • Loosen the spark plug, and clean any dirt and debris from the spark plug recess area before removing.
  1. Remove the spark plug. Refer to Spark Plug Replacement in Engine Controls - 3.4 L.
  2. Install the J 22794  into the spark plug port. See Special Tools and Equipment . Apply compressed air in order to hold the valves in place.
  3. Remove the rocker arm. Refer to Valve Rocker Arm and Push Rod Replacement .
    4. Fig 1: Compressing Valve Springs
    GM54421Courtesy of GENERAL MOTORS CORP.
  4. Compress the valve spring with the J 38606 .
    5. Fig 2: Valve Locks, Caps, Seats & Spring
    GM54389Courtesy of GENERAL MOTORS CORP.
  5. Remove the valve keys.
  6. Remove the valve cap.
  7. Remove the valve spring.
  8. Inspect the valve spring for damage. Replace the spring if it is damaged. Refer to Cylinder Head Cleaning and Inspection  in the Engine Unit Repair Manual.
  9. Remove the spring seat/valve stem oil seal.
scientia non olet · About LEMON Manuals