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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 752 (Engine Mechanical - 3.1L (Unit Repair)) >> Repair Instructions >> Valve Lifters Cleaning and Inspection

Valve Lifters Cleaning and Inspection

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  1. Clean the valve lifters in cleaning solvent.
    CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.
  2. Dry the valve lifters with compressed air.
  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.

    Fig 1: Inspecting Valve Lifters
    G01811161Courtesy of GENERAL MOTORS CORP.
  4. Inspect the valve lifter guides for the following:
    • For cracks or damage
    • Excessive wear in the lifter mounting bores
Fig 2: Inspecting Valve Lifter Guides
G01811162Courtesy of GENERAL MOTORS CORP.