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Crankshaft & Main Bearings

WARNING: This page is about a different car, the 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ensure main bearing caps are marked for location in cylinder block for reassembly reference before removing. Ensure crankshaft journal diameter, taper and out-of-round are within specification. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS SPECIFICATIONS  table under ENGINE SPECIFICATIONS.
    CAUTION: Crankshaft main bearing journal grinding should not exceed .012" (.30 mm) undersize. DO NOT  grind thrust surfaces of No. 2 main bearing journal. With cast iron crankshafts, final paper or cloth polishing after regrind must be done in same direction as engine rotation.
  2. Before installing main bearings, hold a straightedge across threads of main bearing cap bolts. If threads fail to contact straightedge in all areas, bolts are stretched and must be replaced.
  3. Apply a light coat of engine oil to the main bearing cap bolt threads before tightening the bolt to specification. Refer to TORQUE SPECIFICATIONS . Ensure oil clearance and crankshaft end play are within specification. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS SPECIFICATIONS  table under ENGINE SPECIFICATIONS.
  4. During final reassembly, ensure proper procedure is used for thrust bearing alignment. See THRUST BEARING .
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