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Connecting Rod Bearing Journal Taper and Out-of-Round

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NOTE: Refer to the appropriate Engine information for the specification.
  1. Measure the crankshaft connecting rod journal diameters in 2 directions perpendicular to one another at each end of the connecting rod journal. The difference in the measurements from one end to the other is the taper. Verify measurement is within the wear limit.
Fig 1: Identifying Crankshaft Connecting Rod Journal Diameters Measuring Directions
G06064061Courtesy of FORD MOTOR CO.