Crankshaft Main Bearing Journal Taper and Out-of-Round

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to the appropriate Engine Mechanical article for the specification.

Measure each of the crankshaft main bearing journal diameters in at least 2 directions at each end of the main bearing journal.

Fig 1: Identifying Connecting Rod Bearing Journal Taper And Out-Of-Round Measuring Directions
Courtesy of FORD MOTOR CO.