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Crankshaft & Main Bearings

  1. Ensure main bearing caps are numbered for location. Ensure main bearing journal is within specification. SeeCRANKSHAFT, 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.
  2. If any bearing clearance cannot be adjusted to standard specification, grind crankshaft and use undersize bearings. Install thrust bearing or number 3 bearing last. See TORQUE SPECIFICATIONS .
Fig 1: Positioning Piston Ring End Gaps
G95F13347Courtesy of FORD MOTOR CO.