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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Engine Mechanical - 3.6L (Ly7) (Repair Procedures -- 3 Of 5)) >> Off-Vehicle Repair Instructions - Part 2 >> Valve Spring Inspection and Measurement >> Measurement Procedure

Measurement Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Checking Valve Spring Tension
    GM1210909Courtesy of GENERAL MOTORS CORP.
  1. Measure the valve spring tension using the J 22738-B  . Refer to Engine Mechanical Specifications .
  2. If low valve spring load is found, replace the valve springs. DO NOT use shims to increase spring load. The use of shims can cause the valve spring to bottom out before the camshaft lobe is at peak lift.
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