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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Mechanical - 5.7L (LS6)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Valve Lifters and Guides Cleaning and Inspection

Valve Lifters and Guides Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.
    IMPORTANT: Components that are to be used again must be marked, sorted or organized for assembly.
  1. Mark, sort, or organize the components for assembly. Refer to Separating Parts .
  2. Clean the components in cleaning solvent.
    3. CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
  3. Dry the components with compressed air.
  4. Inspect the valve lifters for the following conditions:
    • Bent or broken clip (1)
    • Worn pushrod 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 Areas Of Valve Lifters
    GM178485Courtesy of GENERAL MOTORS CORP.
    5. Fig 2: View Of Valve Lifters & Lifter Guides
    GM63233Courtesy of GENERAL MOTORS CORP.
  5. Inspect the valve lifter guides for the following:
    • For cracks or damage
    • Excessive wear in the lifter mounting bores
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