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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1244 (Engine Mechanical - 3.8L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm and Push Rod Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Use compressed air in order to blow oil out of the tapped holes in the cylinder head.
  2. Lubricate the ends of the push rods with new engine oil.
  3. Install the push rods to the same position on the cylinder head.
    Fig 1: Installing Push Rods
    G02083579Courtesy of GENERAL MOTORS CORP.
  4. Install the push rod guide plates.
    Fig 2: Installing Push Rod Guide Plates
    G02083580Courtesy of GENERAL MOTORS CORP.
  5. Install the valve rocker arms.
    NOTE: This bolt is designed to permanently stretch when tightened. The correct part number fastener must be used to replace this type of fastener. Do not use a bolt that is stronger in this application. If the correct bolt is not used, the parts will not be tightened correctly. The system or the components may be damaged.
  6. Apply threadlocker GM P/N 12345493 (Canadian P/N 10953488) or equivalent to the rocker arm bolt threads.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  7. Install the valve rocker arm bolts.

    Tighten 

    1. 7.1. Tighten the bolts to 15 N.m (11 lb ft).
    2. 7.2. Use the J 36660-A  to rotate the bolts an additional 90 degrees.
    Fig 3: Installing Valve Rocker Arm And Bolts
    G02083581Courtesy of GENERAL MOTORS CORP.
  8. Install the left or the right valve rocker arm cover. Refer to VALVE ROCKER ARM COVER REPLACEMENT - LEFT  or VALVE ROCKER ARM COVER REPLACEMENT - RIGHT  .
  9. Inspect the valve train for noise.
    Fig 4: Installing Spark Plug Port Adapter To Spark Plug Port
    G02083582Courtesy of GENERAL MOTORS CORP.
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