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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 2.5L (LCV)) >> Repair Instructions >> Valve Stem Oil Seal and Valve Spring Replacement >> Installation Procedure

Installation Procedure

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  1. GM5162889Courtesy of GENERAL MOTORS COMPANY

    Using the EN-37281-A  Valve Guide Seal Remover, install a NEW valve stem oil seal (1). Ensure the valve stem oil seal is fully seated onto the valve guide.

  2. GM5162873Courtesy of GENERAL MOTORS COMPANY

    Valve Spring (3) - Install

  3. Valve Spring Retainer (2) - Install
  4. Compress the valve spring using the valve spring compressor.
  5. Valve Stem Key (1) - Install [2x]
  6. Disconnect the air hose and remove the EN-35667-A  Leakdown Adapter.
  7. GM3942126Courtesy of GENERAL MOTORS COMPANY

    Remove the EN-50717  Valve Spring Compressor and EN-50717  Valve Spring Compressor adapter set from the cylinder head.

  8. Spark Plug - Install [4x] - Gas Engine Ignition Spark Plug Replacement
  9. Valve Rocker Arm - Install (16) - Valve Rocker Arm Replacement (Exhaust) , or Valve Rocker Arm Replacement (Intake)