F 250 2WD LD Pickup V8-4.6L SOHC VIN 6 (1997)
Measure each of the crankshaft main bearing journal diameters in at least two directions.
^
If it is out of specification, replace as necessary.
Main Bearing Journal Taper
1. Measure each of the crankshaft main bearing journal diameters in at least two directions at each end of the main bearing journal.
2. If it is out of specification, replace as necessary.
