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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Mechanical - 4.3L >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Stem Oil Seal and Valve Spring Replacement >> Removal Procedure

Removal Procedure

  1. Remove the valve rocker arm cover.
  2. Remove the required valve rocker arms. Refer to VALVE ROCKER ARM AND PUSH ROD REPLACEMENT  .
  3. Remove the required spark plugs. Refer to ENGINE CONTROLS - REMOVAL & INSTALLATION in Engine Performance.
  4. Install the J 22794  into the spark plug hole.
    Fig 1: Installing J 22794 Into Spark Plug Hole
    G01643684Courtesy of GENERAL MOTORS CORP.
  5. Connect a shop air supply hose and apply compressed air in order to hold the valves in place.
  6. Remove a bolt from a valve rocker arm.
  7. Install a flat washer on the bolt.
  8. Install the bolt in the valve rocker arm bolt hole for the valve spring requiring removal.
    CAUTION: Installing Valve Spring Compressor (J 5892-D)
  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 valve rocker arm 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
    G01643685Courtesy 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 J 5892-D  will not fit.
    Fig 3: Removing Valve Spring With SST
    G01643686Courtesy of GENERAL MOTORS CORP.
  11. Remove the valve keys (1).
  12. Carefully release the valve spring tension.
  13. Remove the J 5892-D  or J 38606. 
  14. Remove the valve spring cap (2) and valve spring (3).
  15. Remove the valve stem oil seal (4).
    Fig 4: Removing Valve Key, Valve Spring Cap, Valve Spring And Valve Stem Oil Seal
    G01643687Courtesy of GENERAL MOTORS CORP.
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