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General Procedure

NOTE: Refer to general specifications in the appropriate 303-01 engine section for the appropriate specification.
NOTE: Piston and piston pins are a matched set and should not be interchanged.

Measure the piston pin bore diameter in 2 directions in the middle of each side as shown. Verify the diameter is within specification.

Fig 1: Identifying Piston Pin Bore Diameter Measuring Directions
G07420881Courtesy of FORD MOTOR CO.