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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 884 (Engine Mechanical - 2.2L (LN2)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Stem Oil Seal and Valve Spring Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Important:  The LN2 Engine uses a unique valve spring seat and seal combination unit. Under no circumstances should this seal and seat unit be replaced with a different type of seal. Use care to ensure that the valve stem seal and spring seat are not damaged during installation. Do not use excessive force or a hammer to install the seal on the guide. The seal will go on if straight and properly lubricated using hand pressure only.

  1. Lubricate the outside of the valve guide and the valve seal with clean engine oil.
  2. Using the J 38820  install the valve spring seat and seal unit onto the guide. Push and twist the valve seal into position on the valve guide until the spring seat flange is flush with the cylinder head surface.
  3. Set the valve spring in place.
  4. Set the valve spring cap in place.
    Fig 1: Installing Valve Keys, Valve Spring And Cap, Valve Stem Oil Seal
    G01976950Courtesy of GENERAL MOTORS CORP.
    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.
  5. Compress the valve spring with the J 5892-D  .
    Fig 2: Compressing Valve Spring
    G01976951Courtesy 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.
  6. Use the J 38606  if the clearance does not permit the use of the J 5892-D  .
  7. Install the valve keys.

    Use grease in order to hold the valve keys in place.

  8. Carefully release the valve spring pressure making sure the valve stem keys stay in place.
    NOTE: The valve stem keys must correctly seat in the valve spring cap. Engine damage may occur by not installing properly.
  9. Remove the J 5892-D  or the J 38606  .
    1. 9.1. Look to ensure that the valve stem keys seat properly in the groove of the valve stem.
    2. 9.2. Tap the end of the valve stem with a soft-faced hammer in order to seat the valve keys if necessary.
      Fig 3: Compressing Valve Spring
      G01976952Courtesy of GENERAL MOTORS CORP.
  10. Remove the J 22794  from the cylinder head.
  11. Remove the 8 mm x 65 mm bolt and washer.
  12. Install the valve rocker arms to the cylinder head. Refer to VALVE ROCKER ARM AND PUSH ROD REPLACEMENT  .
  13. Install the spark plugs to the cylinder head. Refer to SPARK PLUGS in Service & Adjustment Specifications in Engine Performance.
  14. Install both heater hoses on to the heater core. Refer to HEATER HOSE REPLACEMENT - INLET (2.2L) and HEATER HOSE REPLACEMENT - OUTLET (2.2L) in Heating, Ventilation and Air Conditioning.
  15. Install the valve rocker arm cover. Refer to VALVE ROCKER ARM COVER REPLACEMENT  .
  16. Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
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