Ranger 2WD V6-245 4.0L VIN X SFI (1997)
Camshaft Bearing: Testing and Inspection
Cleaning and Inspection
1. If engine has not been disassembled and cleaned, wipe bearing bore clean with a clean rag and solvent. Dry with a clean rag.
2. Inspect for scoring and visible wear. Inspect if Babbitt has been worn away to base. If visibly worn or damaged, bearings will have to be replaced.
If one of the center bearings is worn significantly more than the end bearings, check camshaft for excessive runout.
3. Using suitable bore gauge or inside micrometer measure each bearing twice, 90 degrees apart, to determine bearing size and out-of-round.
4. Check results against specifications. If bearings are out of specifications, they will have to be replaced. Check camshaft journals before replacing
bearings to determine if undersize bearings are required.
5. If necessary, replace bearings.
