LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 855 (Engine Mechanical - 4.8L, 5.3L & 6.0L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Stem Oil Seal and Valve Spring Replacement >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the rocker arm. Refer to VALVE ROCKER ARM AND PUSH ROD REPLACEMENT  .
  2. Disconnect the spark plug wire at the spark plug.
    • Twist each plug wire boot 1/2 turn.
    • Pull only on the boot in order to remove the wire from the spark plug.
    Fig 1: Disconnecting Spark Plug Wire At Spark Plug
    G02116390Courtesy of GENERAL MOTORS CORP.

    Important:  Remove the spark plugs from the cylinder head with the engine at room temperature.

  3. Loosen the spark plug 1 or 2 turns.
  4. Brush or air blast away any dirt or debris from around the spark plug.
  5. Remove the spark plug.
    Fig 2: Removing Spark Plugs From Cylinder Head
    G02116391Courtesy of GENERAL MOTORS CORP.
  6. Install the J 22794  into the spark plug hole.
  7. Attach an air hose to the J 22794  .
  8. Apply compressed air to the J 22794  in order to hold the valves in place.
    Fig 3: Installing J 22794 Into Spark Plug Hole
    G02116392Courtesy of GENERAL MOTORS CORP.
  9. Use the J 38606  in order to compress the valve spring.
    Fig 4: Compressing Valve Spring Using J 38606
    G02116393Courtesy of GENERAL MOTORS CORP.
  10. Remove the valve stem keys (2).
  11. Carefully release the valve spring tension.
  12. Remove the J 38606  .
  13. Remove the valve spring cap (3).
  14. Remove the valve spring (4).
  15. Remove the valve stem oil seal and shim (1, 5)
    Fig 5: Removing Valve Stem Keys
    G02116394Courtesy of GENERAL MOTORS CORP.
scientia non olet · About LEMON Manuals