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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1219 (Engine Mechanical - 4.2L 6-Cylinder (Unit Repair)) >> Repair Instructions >> Camshaft Installation

Camshaft Installation

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required  : J 44221  Camshaft Holding Tool

  1. Coat the camshaft journals, camshaft journal thrust face, and camshaft lobes with clean engine oil.
  2. Install the exhaust camshaft.
  3. Install the intake camshaft.
  4. Fig 1: Installing camshafts
    G01706687Courtesy of GENERAL MOTORS CORP.
  5. Install J 44221 with the camshaft flats up and the number 1 cylinder at top dead center.
    Fig 2: Installing J 44221 With Camshaft Flats Up And Number 1 Cylinder At Top Dead Center
    G01706688Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Install the same camshaft cap onto the same camshaft journal from which it was removed. The camshaft caps are pin stamped for direction and numerical order.
  6. Install the exhaust camshaft caps.
  7. Install the intake camshaft caps.
  8. Install the camshaft cap bolts.
    NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Tighten 

    Tighten the camshaft cap bolts to 12 N.m (106 lb in).

  9. Fig 3: Installing Camshaft Cap Bolts
    G01706689Courtesy of GENERAL MOTORS CORP.
  10. Remove J 44221.