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Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 3.5L - Repair Instructions - Off Vehicle (2 Of 3)) >> Valve Lifter Cleaning and Inspection

Valve Lifter Cleaning and Inspection

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  1. Clean the valve lifters in cleaning solvent.
    2. WARNING: Refer to Safety Glasses Warning .
  2. Dry the valve lifters with compressed air.
    3. Fig 1: Identifying Valve Lifter Inspection Areas
    GM178485Courtesy of GENERAL MOTORS CORP.
  3. Inspect the valve lifters for the following:
    • Bent or broken clip (1)
    • Worn push rod socket (2)
    • Scuffed or worn sides (3)

      If the valve lifter shows wear, inspect the engine block lifter bores for wear or damage.

    • Flat spots on the roller (4)
    • Loose or damaged pin (5)
    • Plugged oil hole (6)
    • Worn or damaged roller bearing

      The roller should rotate freely with no binding or roughness.

    4. Fig 2: View Of Valve Lifter Guides
    GM1682179Courtesy of GENERAL MOTORS CORP.
  4. Inspect the valve lifter guides for the following:
    • For cracks or damage
    • Excessive wear in the lifter mounting bores
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