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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 >> Off Vehicle Repair Instructions >> Valve Rocker Arm and Shaft Removal

Valve Rocker Arm and Shaft Removal

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: View Of Valve Rocker Arm Cover
    GM897124Courtesy of GENERAL MOTORS CORP.
  1. Loosen the adjusting nuts (217) and bolts (216).
    2. Fig 2: Identifying Rocker Shaft Retaining Bolts
    GM897125Courtesy of GENERAL MOTORS CORP.
  2. Loosen the left side rocker shaft retaining bolts in sequence. Loosen the shaft mounting bolts 2 turns at a time in sequence, to prevent damaging the valves or rocker arms.
    3. Fig 3: Rocker Shaft Right Side Retaining Bolt Loosening/Tightening Sequence
    GM1308051Courtesy of GENERAL MOTORS CORP.
  3. Loosen the right side rocker shaft retaining bolts in sequence. Loosen the shaft mounting bolts 2 turns at a time in sequence, to prevent damaging the valves or rocker arms.
    4. Fig 4: View Of Lash Adjusters
    GM897119Courtesy 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 on the shaft.
  4. Remove the bolts (214) and valve rocker arm and shaft assemblies.
  5. Remove the lash adjusters (207).
    6. Fig 5: Exploded View Of Intake Valve Rocker Arms
    GM897120Courtesy of GENERAL MOTORS CORP.
  6. Remove the intake valve rocker arms as an assembly (215) from the shaft (221). Refer to Separating Parts .
  7. Remove the exhaust valve rocker arms (218) and springs (219) from the shaft (220).
  8. Remove the nuts (217) and bolts (216), if required.
    9. Fig 6: Exploded View Of Exhaust Valve Rocker Arms
    GM897121Courtesy of GENERAL MOTORS CORP.
  9. Note the installed positions of the exhaust valve rocker arms (218).
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