Crankshaft Main Bearing Journal - Taper

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.

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

Refer to ENGINE - 3.9L & 4.2L for the procedure.
If out of specification, install new components as necessary. Refer to ENGINE - 3.9L & 4.2L for the procedure .

Fig 1: Measuring Crankshaft Main Bearing Journal Taper

Courtesy of FORD MOTOR CO.