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Home >> GMC >> 1998 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 4.3L V6, 5.0L, 5.7L & 7.4L V8 - VINS [W,X,M,R,J]) >> Overhaul >> Cylinder Head >> Valve Springs

Valve Springs

WARNING: This page is about a different variant/trim than selected.

Measure valve spring free length, installed height and pressure (tension). Replace valve spring if measurement is not within specification. See appropriate VALVES & VALVE SPRINGS table under ENGINE SPECIFICATIONS. Measure installed height between cylinder head spring seat (or top of shim, if shimmed) and top of spring shield (top of spring on 7.4L). If installed height exceeds specification, install shims as necessary to bring installed height to specification. On 5.7L engines, DO NOT install shims. Ensure installed height is not less than specified.

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