E 150 1/2 Ton Van V6-4.2L VIN 2 (1997)
Crankshaft: Testing and Inspection
Journal
Connecting Rod Journal Diameter
Measure the crankshaft connecting rod journal diameters in at least two directions perpendicular to one another. The difference between the
measurements is the out-of-round. Verify the journal is within the wear limit specification.
Connecting Rod Journal Taper
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.
Main Bearing Journal Clearance
NOTE: Crankshaft main bearing journals must be within specifications before checking journal clearance.
1. Remove the crankshaft main bearing caps and bearings.
2. Lay a piece of Plastigage(R) across the face of each crankshaft main bearing surface.
3. Install and remove the crankshaft main bearing cap.
NOTE: Do not turn the crankshaft while doing this procedure.
