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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Mechanical - 4.3L >> Repair Instructions >> Off-Vehicle Repair Instructions >> Valve Lifters and Guides Cleaning and Inspection

Valve Lifters and Guides Cleaning and Inspection

  1. Mark, sort, and organize the components for assembly.
    CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.
  2. Clean the components in cleaning solvent.
    Fig 1: Cleaning Components In Cleaning Solvent
    G01643956Courtesy of GENERAL MOTORS CORP.
  3. Dry the components with compressed air.
  4. Inspect the valve lifter pushrod guides for excessive wear.
  5. Inspect the valve lifter pushrod guides for cracks or damage.
    Fig 2: Inspecting Valve Lifter Pushrod Guides
    G01643957Courtesy of GENERAL MOTORS CORP.
  6. Inspect the valve lifter for the following:
    • Broken or damage clip (1)
    • Worn pushrod socket (2)
    • Scuffed or worn lifter body (3)

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

    • Worn roller (4)
    • Loose or damaged pin (5)
    • Plugged oil hole (6)
    Fig 3: Inspecting Valve Lifter
    G01643958Courtesy of GENERAL MOTORS CORP.
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