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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1526 (Engine Mechanical - 3.5L (L66)) >> Repair Instructions >> On Vehicle Repair Instructions >> Valve Rocker Arm and Shaft Replacement >> Installation Procedure

Installation Procedure

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
    GM1336942Courtesy of GENERAL MOTORS CORP.
  1. Install the bolts (2) and nuts (3). Do not tighten the nuts at this time.
  2. Install the intake valve rocker arm assemblies (4) onto the shaft (1).
  3. Install the bolts to the shaft (1).
  4. Install the exhaust valve rocker arms (6) and springs (5) onto the shaft (7).
    5. Fig 2: View Of Exhaust Valve Rocker Arms
    GM1336943Courtesy of GENERAL MOTORS CORP.
  5. Note the installed position of the exhaust valve rocker arms (2).
  6. Install the bolts to the shaft (3).
    7. Fig 3: View Of Bolts, Valve Rocker Arm & Shaft Assemblies
    GM1336941Courtesy of GENERAL MOTORS CORP.
  7. Install the lash adjusters (2).
    8. NOTE: Refer to Fastener Notice .
    IMPORTANT: The intake rocker arm shaft front locating pin serves as an oil passage for VTEC system operation. During assembly, use care to locate the shaft onto the pin. Replace pins that are bent or damaged.
  8. Install the rocker arm and shaft assemblies and bolts (1).
    9. Fig 4: View Of Left Side Rocker Shaft Retaining Bolts
    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: Identifying Right Side Rocker Shaft Retaining Bolts
    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.
  11. Install the valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Left Side  and Valve Rocker Arm Cover Replacement - Right Side .
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