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Home >> Buick >> 2009 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 5.3L) >> Repair Instructions - Off Vehicle >> Cylinder Head Disassemble >> Disassemble

Cylinder Head Disassemble: Disassemble

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Compressing Valve Spring Using
    GM260151Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • With the components at room temperature, remove the spark plugs from the cylinder head.
    • Mark, organize, or sort the cylinder head components for assembly. Return the components to their original location during assembly.
  1. Remove the spark plugs from the cylinder heads.
  2. Use the J 8062  in order to compress the valve spring. See Special Tools .
    3. Fig 2: View Of Cylinder Head Components
    GM1272854Courtesy of GENERAL MOTORS CORP.
  3. Remove the valve stem keys (225).
  4. Remove the valve spring cap (224).
  5. Remove the valve spring (223).
  6. Remove the valves (227 and 228).
  7. Remove the valve stem oil seal (222). Refer to Separating Parts .
    8. Fig 3: View Of Cylinder Head Expansion Plugs
    GM1272856Courtesy of GENERAL MOTORS CORP.
  8. Remove the cylinder head core hole plugs (226), as required.
    9. Fig 4: View Of Coolant Temperature Sensor (Left Cylinder Head)
    GM260086Courtesy of GENERAL MOTORS CORP.
  9. Remove the coolant temperature sensor from the left cylinder head.
    10. Fig 5: Identifying Right Cylinder Head Coolant Plug
    GM1552455Courtesy of GENERAL MOTORS CORP.
  10. Remove the coolant plug (229) from the right cylinder head.
    11. Fig 6: Identifying Core Plug
    GM2046466Courtesy of GENERAL MOTORS CORP.
  11. Inspect for a leaking plug. Second design applications use a rivet-type plug at the top rear coolant passage of each cylinder head. If service of a leaking plug is required, it is necessary to remove the cylinder head from the engine to properly remove the plug.
    12. Fig 7: View Of Plug Assembly
    GM2060115Courtesy of GENERAL MOTORS CORP.
  12. Using a 6.43 mm (0.25 in) or smaller punch, remove the plug assembly from the cylinder head.
    13. Fig 8: Engine Coolant Air Bleed Cover, Bolts & Seals
    GM1408862Courtesy of GENERAL MOTORS CORP.
  13. If plug removal is required, install a first design coolant air bleed cover and bolt to complete the repair.
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