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Crankshaft & Main Bearings

  1. Mark main bearing caps in relation to cylinder block. Measure crankshaft journal diameter, out-of-round and taper. Determine oil clearance.
  2. If not within specification, replace main bearings. DO NOT machine crankshaft. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS table under ENGINE SPECIFICATIONS.
  3. For rear main bearing installation, see REAR CRANKSHAFT OIL SEAL. Align thrust bearing surfaces and measure crankshaft end play. See THRUST BEARING.
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