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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Mechanical - 8.1L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Valve Guide Reaming/Valve and Seat Grinding >> Valve Reconditioning Procedure

Valve Reconditioning Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Valve Margin Measurement
    GM57502Courtesy of GENERAL MOTORS CORP.
  1. Replace the valve if the valve stem shows excessive wear or is warped.
    2. IMPORTANT: Several different types of equipment are available for reconditioning valves. Use the manufacturers recommendations of equipment to attain the proper results.
  2. Reface pitted valves on a valve refacing machine in order to insure the correct relationship between the head and the stem.
  3. Replace the valve if the edge of the head is less than 0.79 mm (0.031 in) thick after grinding.
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