Crankshaft - Connecting Rod Journal Taper, Out Of Round

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Measure the crankshaft connecting rod journal diameters in two 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. Refer to SPECIFICATIONS .
1. If it is out of specification, install new components as necessary.
  
  Fig 1: Measuring Crankshaft Connecting Rod Journal Taper, Out Of Round
  Courtesy of MAZDA MOTORS CORP.