F 250 4WD LD Pickup V8-281 4.6L VIN W EFI (1997)
Crankshaft: Testing and Inspection
Journal
Connecting Rod Journal Diameter
Measure the crankshaft connecting rod journal diameters in at least two directions perpendicular of one another. The difference between the
measurements is the out-of-round. Verify the journal is within the wear limit specification. Undersize connecting rod bearings will need to be installed.
Main Bearing Journal Clearance
NOTE: Crankshaft main bearing journals must be within specification 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.
4. Verify the crankshaft journal clearance.
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If it is out of specification, replace as necessary.
Main Bearing Journal Diameter
