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Home >> Chevrolet >> 2005 >> Chevy Express H1500, Van Passenger >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Lifter Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Remove the lower intake manifold. Refer to Intake Manifold Replacement - Lower .
  2. Remove the valve rocker arms and the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  3. Fig 1: View Of Valve Lifter Pushrod Guides
    GM328592Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Place the components in a rack so that the components can be reinstalled to their original location.
  4. Remove the bolts and valve lifter pushrod guide.
  5. Fig 2: View Of Valve Lifters
    GM328593Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Place the valve lifters in the rack in the upright position in order to maintain the oil inside the valve lifters.
  6. Remove the valve lifters.
  7. Fig 3: Using J 3049-A To Remove The Stuck Valve Lifters
    GM31350Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Some valve lifters may be stuck in the valve lifter bores because of gum or varnish deposits and may require the use of J 3049-A  for removal. See Special Tools .
  8. Use the J 3049-A  in order to remove the stuck valve lifters. See Special Tools .
  9. Use a cleaning solvent and a shop towel to clean any varnish from the valve lifter bores.
  10. Inspect the valve lifter bores for excessive wear or scoring. Replace the engine block if there is excessive wear or deep scoring.
  11. Inspect the camshaft for wear or damage. If the wear is questionable remove the camshaft and inspect. Refer to Camshaft and Bearings Cleaning and Inspection .
  12. Clean and inspect the valve lifters and the valve pushrod guide. Refer to Valve Lifters and Guides Cleaning and Inspection .