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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1021 (Engine Mechanical - 8.1L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Valve Lifters and Guides Cleaning and Inspection

Valve Lifters and Guides Cleaning and Inspection

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    CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
    IMPORTANT: Parts that are to be reused must remain sorted or organized in order to return them to their original location.
  1. Dry the components with compressed air.
  2. Inspect the valve lifters for the following:
    • A damaged, mispositioned or broken clip (1)
    • A scored or worn pushrod socket (2)
    • A severely scuffed or worn lifter body (3)

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

    • Flat spots on the roller (4)
    • A loose pin (5)
    • A plugged oil hole (6)
    3. Fig 1: View Of Valve Lifters Inspection Areas
    GM677752Courtesy of GENERAL MOTORS CORP.
  3. If flat spots are found on the lifter(s), inspect the corresponding lobe on the camshaft for damage.
  4. Inspect the valve lifter guides for the following:
    • Excessive guide slot side wear
    • Cracks or damage
    5. Fig 2: View Of Valve Lifter Guides
    GM173176Courtesy of GENERAL MOTORS CORP.
  5. Inspect the valve lifter guide retainer for the following:
    • Wear, damage, or stress cracking in the leg areas
    • Wear or damage around the retainer bolt holes
    6. Fig 3: View Of Valve Lifter Guide Retainer
    GM173193Courtesy of GENERAL MOTORS CORP.
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