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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1819 (Engine Mechanical - 3.5L (L66)) >> Repair Instructions >> Off Vehicle Repair Instructions >> Valve Rocker Arm and Shaft Installation

Valve Rocker Arm and Shaft Installation

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Exploded View Of Intake Valve Rocker Arms
    GM897120Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Identify parts as they are removed so they can be installed in their original locations if used again. When removing or installing the rocker arm shaft assembly, do not remove the rocker arm shaft mounting bolts. The bolts will retain the springs and rocker arms onto the shafts.
  1. Install the bolts (216) and nuts (217). Do not tighten the nuts at this time.
  2. Install the intake valve rocker arm assemblies (215) onto the shaft (221).
  3. Install the bolts (214) to the shaft (221).
    4. Fig 2: Exploded View Of Exhaust Valve Rocker Arms
    GM897121Courtesy of GENERAL MOTORS CORP.
  4. Install the exhaust valve rocker arms (218) and springs (219) onto the shaft (220).
  5. Note the installed position of the exhaust valve rocker arms (218).
  6. Install the bolts to the shaft (220).
    7. Fig 3: View Of Lash Adjusters
    GM897119Courtesy of GENERAL MOTORS CORP.
  7. Install the lash adjusters (207).
    8. NOTE: Refer to Fastener Notice in Cautions and Notices.
    IMPORTANT: The intake rocker arm shaft front locating pin serves as an oil passage for intake rocker arm control system operation. During assembly, use care to locate the shaft onto the pin. Replace pins that are bent or damaged.
  8. Install the intake and exhaust rocker arm and shaft assemblies and bolts (214).
    9. Fig 4: View Of Left Side Rocker Shaft Retaining Bolts Tightening Sequence
    GM897309Courtesy of GENERAL MOTORS CORP.
  9. Tighten the left side rocker shaft retaining bolts in sequence. Tighten the bolts 2 turns at a time in sequence, to ensure that the rocker arms do not bind on the valves.

    Tighten: 

    1. Tighten the bolts in sequence a first pass to 12 N.m (106 lb in).
    2. Tighten the bolts in sequence a final pass to 24 N.m (17 lb ft).

    10. Fig 5: View Of Right Side Rocker Shaft Retaining Bolts Tightening Sequence
    GM1308168Courtesy of GENERAL MOTORS CORP.
  10. Tighten the right side rocker shaft retaining bolts in sequence. Tighten the bolts 2 turns at a time in sequence, to ensure that the rocker arms do not bind on the valves.
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