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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 432 (Engine Mechanical - 2.2L (On-Vehicle)) >> Repair Instructions >> Valve Stem Oil Seal and Valve Spring Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 GMC Sonoma and 2002 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM .
  2. Remove the valve rocker arm cover from the cylinder head. Refer to Valve Rocker Arm Cover Replacement .
  3. Remove both heater hoses from the heater core.
  4. Remove the spark plugs from the cylinder head.
  5. Remove the required valve rocker arm(s). Refer to Valve Rocker Arm and Push Rod Replacement .
  6. Install the J 22794  to the spark plug hole in the cylinder head.
  7. Connect a shop air supply hose and apply compressed air in order to hold the valves in place.
    8. Fig 1: Installing J 22794 To Spark Plug Hole
    G01658843Courtesy of GENERAL MOTORS CORP.
  8. Install an 8 mm x 65 mm bolt with a hardened washer into the rocker arm bolt hole.
    CAUTION: 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.
  9. Use the J 5892-D  in order to compress the valve spring.
    1. 9.1. Hook the slotted end of J 5892-D  under the washer on the bolt.
    2. 9.2. Apply steady pressure on the valve spring cap until the valve keys are accessible
    Fig 2: Compressing Valve Spring Using J 5892-D
    G01658844Courtesy of GENERAL MOTORS CORP.
    NOTE: Completely engage the J 38606 jaws on the valve spring. The J 38606 may slip off and scratch the valve spring. Replace the valve spring if the valve spring becomes scratch.
  10. Use J 38606  when there is not enough clearance to use J 5892-D  .
    Fig 3: Engaging J 38606 Jaws Onto Valve Spring
    G01658845Courtesy of GENERAL MOTORS CORP.
  11. Remove the valve keys.
  12. Carefully release the spring tension.
  13. Remove the J 5892-D  or the J 38606  .
  14. Remove the valve spring cap.
  15. Remove the valve spring.
  16. Remove the valve stem oil seal.
    Fig 4: Valve Keys, Valve Spring Cap, Valve Spring & Valve Stem Oil Seal
    G01658846Courtesy of GENERAL MOTORS CORP.
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