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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 598 (Engine Mechanical - 3.8L (On-Vehicle)) >> Repair Instructions >> Valve Rocker Arm and Push Rod Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 Buick Regal. 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 rod(s) with clean engine oil. Install the push rod(s) to the same position the push rod(s) was removed from.
    Fig 1: Installing Push Rods
    G01764181Courtesy of GENERAL MOTORS CORP.
  3. Install the push rod guide plate(s).
    Fig 2: Push Rod Guide Plate(s)
    G01764182Courtesy of GENERAL MOTORS CORP.
  4. Install the valve rocker arm(s).
    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.
  5. Apply GM P/IM 12345493 threadlocker or equivalent to the rocker arm bolt threads
  6. Install the valve rocker arm bolt(s).

    Tighten: 

    Tighten the valve rocker arm bolt(s) to 15 N.m (11 lb ft). Use the J 36660-A in order to rotate the bolts an additional 90 degrees 

    Fig 3: Valve Rocker Arms And Bolts
    G01764183Courtesy of GENERAL MOTORS CORP.
  7. Install the valve rocker arm cover(s). Refer to the following procedures:
  8. Inspect the valve train for noise.
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