Crankshaft, Main Bearings and Flywheel/Crankshaft CRANKSHAFT INSPECTION 1. Clean crankshaft thoroughly, especially oil passages from crankshaft bearings to connecting rod bearings. 2. Check crankshaft for cracks or signs of load stress (see illustration for critical areas of load stress in a crankshaft). CD7147 -UN-23FEB89 3. Inspect both shoulders of thrust bearing journal for scores or unevenness. CD,3274,G15,19 -19-01MAR92 CTM3274 (01JUL99) 15-19 Saran Liter Engines 060799 PN=116 CRANKSHAFT IDENTIFICATION Crankshafts can be made of steel (C) or cast iron (D).
Cast iron crankshafts have rolled grooves (B) while steel -UN-08MAR95 crankshafts may have machined fillet radii (A) or rolled grooves. A—Crankshaft with fillet radii B—Crankshaft with rolled grooves CD30248 C—Steel crankshaft D—Cast iron crankshaft -UN-17FEB95 CD30337 CD,3274,G15,36 -19-01FEB94 15 19