Inspection Procedure - Crankshaft

Coat crankshaft bearings with engine oil. Install upper crankshaft bearings into engine block crankshaft journals. Install lower crankshaft bearings into crankshaft bearing caps. Install crankshaft. Inspect crankshaft end play with crankshaft bearings installed. Check for permissible crankshaft end play.
With crankshaft mounted on front and rear crankshaft bearings, check middle crankshaft journal for permissible out-of-round (runout). Inspect all of crankshaft bearing clearances using a commercially available plastic gauging (ductile plastic threads). Cut plastic gauging threads to length of bearing width. Lay them axially between crankshaft journals and crankshaft bearings. Install crankshaft bearing caps.
Install crankshaft bearing cap bolts. Tighten crankshaft bearing cap bolts to 50 N.m (37 ft. lbs.). Using angular torque gauge, tighten bolts an additional turn of 45 degrees, plus another turn of 15 degrees. Remove crankshaft bearing caps. Measure width of flattened plastic thread of plastic gauging using a ruler. (Plastic, gauging is available for different tolerance ranges). Inspect bearing clearances for permissible tolerance ranges.