Crankshaft & Main Bearings
- Ensure main bearing caps are numbered for location. Ensure main bearing journal is within specification. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS table under ENGINE SPECIFICATIONS. Position crankshaft on "V" blocks. Using a dial indicator, check crankshaft runout. If runout is not within specification, replace crankshaft.
- If any bearing clearance cannot be adjusted to standard specification, grind crankshaft and use undersize bearings. Install thrust bearing or number 3 bearing last. Install and tighten main bearing cap bolts in sequence to specification. See Fig 1. See TORQUE SPECIFICATIONS .
Courtesy of FORD MOTOR CO.