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Cylinder Head Distortion

SPECIAL TOOLS DESCRIPTION

G03901974
 Straight Edge 303-D039 (D83L-4201-A) or equivalent
  1. Use a straight edge and a feeler gauge to inspect the cylinder head for flatness. If the cylinder head is distorted, install a new cylinder head.
    Fig 1: Checking Cylinder Head For Flatness Using Straight Edge And Feeler Gauge
    G03897667Courtesy of FORD MOTOR CO.
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