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7.3L Power Stroke – OVERHAUL – VALVE TRAIN – Valve Lifters

1. Ensure roller rotates smoothly and without excessive play. Measure valve lifter outside diameter and valve lifter          bore diameter in cylinder block to determine oil clearance.
Replace valve lifter if oil clearance is not within specification. See VALVE LIFTERS table under ENGINE                        SPECIFICATIONS.
2. If necessary to disassemble valve lifter, remove retainer and components from valve lifter body. See Fig. 116.                Inspect all components for damage. Ensure plunger moves freely in plunger body. Replace valve lifter if plunger          fails to move freely in plunger body or if any components are damaged. Valve lifter must be replace as an                      assembly.