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Home >> Buick >> 2002 >> Century Limited >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 3.1L V6 - VIN (J) (On-Vehicle) >> Repair Instructions >> Cylinder Head Replacement - Right >> Removal Procedure

Removal Procedure

  1. Raise and support the vehicle.
  2. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in ENGINE COOLING SYSTEM .
  3. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  4. Lower the vehicle.
  5. Remove the lower intake manifold. Refer to Intake Manifold Replacement - Lower .
  6. Remove the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  7. Remove the exhaust crossover pipe. Refer to EXHAUST CROSSOVER PIPE REPLACEMENT (3.1L) in AUTOMATIC TRANSAXLE SERVICING .
  8. Remove the right spark plug wires from the spark plugs. Refer to SPARK PLUG WIRE REPLACEMENT in ENGINE CONTROLS - REMOVAL & INSTALLATION, OVERHAUL .
  9. Remove the fuel line bracket bolt/stud and the bracket.
    Fig 1: Fuel Line Bracket Bolt/Stud And The Bracket
    G01763654Courtesy of GENERAL MOTORS CORP.
  10. Remove the generator. Refer to GENERATOR .
  11. Remove the right spark plugs. Refer to SPARK PLUGS .
  12. Remove the right exhaust manifold. Refer to EXHAUST MANIFOLD REPLACEMENT - RIGHT (3.1L) in AUTOMATIC TRANSAXLE SERVICING .
  13. Remove the right cylinder head bolts.
  14. Remove the right cylinder head.
    Fig 2: Right Cylinder Head
    G01763655Courtesy of GENERAL MOTORS CORP.
  15. Remove the right cylinder head gasket.
    Fig 3: Right Cylinder Head Gasket
    G01763656Courtesy of GENERAL MOTORS CORP.
  16. Clean the following areas:
    • The gasket mating surfaces on the cylinder head, cylinder block, and intake manifolds.
    • The cylinder block bolt threads.
    • The cylinder head bolts.
  17. Clean and inspect the cylinder head. Refer to CYLINDER HEAD CLEANING AND INSPECTION .
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