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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1497 (Engine Mechanical - 4.2L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Camshaft Installation

Camshaft Installation

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 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.
    Fig 1: Installing Exhaust And Intake Camshaft
    G02128881Courtesy of GENERAL MOTORS CORP.
  4. Install J 44221  with the camshaft flats up and the number 1 cylinder at top dead center.
    Fig 2: Installing Camshaft Holding Tool
    G02128882Courtesy 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.
  5. Install the exhaust camshaft caps.
  6. Install the intake camshaft caps.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  7. Install the camshaft cap bolts.

    Tighten 

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

  8. Remove J 44221  .
    Fig 3: Installing Exhaust & Intake Camshaft Caps
    G02128883Courtesy of GENERAL MOTORS CORP.