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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1444 (Engine Mechanical - 5.3L (Lm4)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Cylinder Head Disassemble >> Cylinder Head Disassemble

Cylinder Head Disassemble

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Cylinder Head Components
    GM1272854Courtesy of GENERAL MOTORS CORP.
    IMPORTANT:
    • Remove the spark plugs from the cylinder head with the components at room temperature.
    • Mark, organize, or sort the cylinder head components for assembly. Return the components to their original location during assembly.
    • Do not remove the cylinder head expansion plugs (226) unless service is required.
  1. Remove the spark plugs from the cylinder heads.
    2. Fig 2: Compressing Valve Spring Using
    GM260151Courtesy of GENERAL MOTORS CORP.
  2. Use the J 8062  in order to compress the valve spring.
    3. Fig 3: 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 4: View Of Cylinder Head Expansion Plugs
    GM1272856Courtesy of GENERAL MOTORS CORP.
  8. Remove the cylinder head expansion plugs (226), if required.
    9. Fig 5: 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 6: View Of Coolant Plug (Right Cylinder Head)
    GM260157Courtesy of GENERAL MOTORS CORP.
  10. Remove the coolant plug from the right cylinder head.
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