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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 596 (Engine Mechanical - 3.5L (Unit Repair)) >> Repair Instructions >> Cylinder Head Disassemble >> Tools Required

Tools Required

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Using an appropriately sized deep socket and a plastic hammer, lightly tap on the valve spring retainer to loosen the valve keepers.
    Fig 1: Loosening Valve Keepers
    G01815203Courtesy of GENERAL MOTORS CORP.
    WARNING: Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys. Failing to use care may cause personal injury.
    CAUTION: Do not compress the valve springs less than 24.0 mm (0.943 in). Contact between the valve spring retainer and the valve stem oil seal can cause potential valve stem oil seal damage.
  2. Compress the valve spring using the J 8062  and the J 42037. 
  3. Use the magnetic end of the J 43059  in order to remove the valve keepers.
  4. Remove the valve spring compressor and the pilot.
    Fig 2: Removing Valve Spring Compressor & Pilot
    G01815204Courtesy of GENERAL MOTORS CORP.
  5. Remove the valve spring retainer (2).
    Fig 3: Removing Valve Spring Retainer
    G01815205Courtesy of GENERAL MOTORS CORP.
  6. Remove the valve spring.
    Fig 4: Removing Valve Spring
    G01815206Courtesy of GENERAL MOTORS CORP.

    Important:  NEVER reuse a valve stem oil seal.

  7. Remove the valve stem oil seal using the J 38820  and discard.
    Fig 5: Removing Valve Stem Oil Seal
    G01815207Courtesy of GENERAL MOTORS CORP.
  8. Remove the valve (1).
  9. Repeat these procedures for the remaining valves.
    Fig 6: Removing Valve
    G01815208Courtesy of GENERAL MOTORS CORP.
  10. Remove the water jacket hole expansion plugs from the left cylinder head, if required.
    Fig 7: Removing Water Jacket Hole Expansion Plugs From Left Cylinder Head
    G01815209Courtesy of GENERAL MOTORS CORP.
  11. Remove the water jacket hole expansion plugs from the right cylinder head, if required.
    Fig 8: Removing Water Jacket Hole Expansion Plugs From Right Cylinder Head
    G01815210Courtesy of GENERAL MOTORS CORP.
  12. Remove the side oil gallery threaded plugs from the left cylinder head, if required.
    Fig 9: Removing Side Oil gallery Threaded Plugs From Left Cylinder Head
    G01815211Courtesy of GENERAL MOTORS CORP.
  13. Remove the side oil gallery threaded plugs from the right cylinder head, if required.
    Fig 10: Removing Side Oil gallery Threaded Plugs From Right Cylinder Head
    G01815212Courtesy of GENERAL MOTORS CORP.
  14. Remove the upper water jacket hole threaded plugs from the left cylinder head, if required.
    Fig 11: Removing Upper Water Jacket Hole Threaded Plugs From Left Cylinder Head
    G01815213Courtesy of GENERAL MOTORS CORP.
  15. Remove the upper water jacket hole threaded plug from the right cylinder head, if required.
    Fig 12: Removing Upper Water Jacket Hole Threaded Plugs From Right Cylinder Head
    G01815214Courtesy of GENERAL MOTORS CORP.
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