Tools Required

J 36660-A  Torque Angle Meter

1. Install the upper crankshaft bearings and lubricate bearing surfaces with engine oil.
   Fig 1: Installing Upper Crankshaft Bearings

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2. Install the crankshaft on the journals.
   Fig 2: Installing Crankshaft

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3. Install the lower bearing halves, without grooves into the lower crankcase. Apply oil to bearing surfaces.
   Fig 3: Installing Lower Bearing Halves Into Lower Crankcase

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4. Apply sealer GM P/N 12346286 (Canadian P/N 10953472) to the surfaces of the engine block to bedplate mating surfaces.
   Fig 4: Applying Sealer To Bedplate Mating Surfaces

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5. Install the lower crankcase. Tap gently into place with a suitable tool if necessary. Ensure it is aligned properly on the dowels.
   Fig 5: Installing Lower Crankcase

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6. Install the NEW crankshaft bearing bolts in sequence finger tight.
   1. 6.1. Tighten the crankshaft bearing bolts in sequence.

      Tighten 

      Tighten the crankshaft bearing bolts to 20 N.m (15 lb ft).

   2. 6.2. Tighten the crankshaft bearing bolts in sequence using the J 36660-A. 

      Tighten 

      Tighten the crankshaft bearing bolts 70 degrees using the torque angle meter.

   Fig 6: Identifying Crankshaft Bearing Bolt Tightening Sequence

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7. Tighten the lower crankcase perimeter bolts in sequence.

   Tighten 

   Tighten the lower crankcase perimeter bolts to 25 N.m (18 lb ft).

   Fig 7: Identifying Lower Crankcase Perimeter Bolt Tightening Sequence

   Courtesy of GENERAL MOTORS CORP.