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Home >> Infiniti >> 2004 >> QX56 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1200 (Engine Mechanical) >> Cylinder Head >> Disassembly and Assembly >> Disassembly

Disassembly and Assembly: Disassembly

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the spark plug. Refer to "REMOVAL ".
  2. Remove the valve lifter.
    • Identify the installation positions, and store them without mixing them up.
  3. Remove the valve collet using Tool.
    1. Tool number: KV10116200 (J-26336-B) 
      1. : KV10115900 (J-26336-20) 
      2. : KV10109220 ( - ) 
    CAUTION: When working, take care not to damage valve lifter holes.
  4. Remove the valve spring retainer, valve spring and valve spring seat.
  5. Inspect the valve guide clearance. Refer to "VALVE GUIDE CLEARANCE ".
    Fig 1: Removing Valve Collet Using Specified Tools
    G02384519Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Push the valve stem to the combustion chamber side, and remove the valve.
    • Identify the installation positions, and store them without mixing them up.
  7. Remove the valve oil seal using Tool.
    1. Tool number: KV10107902 (J-38959) 
    Fig 2: Removing Valve Oil Seal Using Tool (KV10107902)
    G02384520Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Replace the valve seat if necessary. Refer to "VALVE SEAT REPLACEMENT ".
  9. Replace the valve guide if necessary. Refer to "VALVE SEAT REPLACEMENT ".
  10. Remove the spark plug tube, as necessary.
    • Remove the spark plug tube out of the cylinder head using suitable tool
      CAUTION:
      • Do not damage the cylinder head.
      • Do not remove the spark plug tube unless absolutely necessary. Once removed, the spark plug tube will be deformed and cannot be reused.
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