Hydraulic Valve Lash (HVL) Adjusters: Inspection

Inspect HVL adjusters for wear scoring and damage. Measure cylinder head HVL adjuster bore diameter and HVL adjuster O.D. If oil clearance exceeds maximum specification, replace HVL adjuster. If oil clearance still exceeds maximum specification, replace cylinder head. See HYDRAULIC VALVE LASH (HVL) ADJUSTERS  table under ENGINE SPECIFICATIONS.