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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Engine Mechanical - 3.9L) >> 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 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • Before removing 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.
  • Loosen the spark plug and clean any dirt and/or debris from the spark plug recess area before removing.
  1. Remove the spark plug. Refer to SPARK PLUG REPLACEMENT .
  2. Remove the rocker arm. Refer to Valve Rocker Arm and Push Rod Replacement .
  3. Install the J 22794  into the spark plug port. Apply compressed air in order to hold the valves in place.
    4. Fig 1: Compressing Valve Spring Using J 5892-D
    GM1665094Courtesy of GENERAL MOTORS CORP.
  4. Compress the valve spring using the J 38606  .
    5. Fig 2: Valve Locks, Caps, Seats & Spring
    GM54389Courtesy of GENERAL MOTORS CORP.
  5. Remove the Identifying valve spring cap keys.
  6. Remove the valve cap.
  7. Remove the valve spring.
  8. Remove the valve stem oil seal.
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