Tools Required

J 45059 Angle Meter

1. Install the upper crankshaft bearings and lubricate bearing surfaces with engine oil.



2. Install the crankshaft on the journals.



3. Install the lower bearing halves, without grooves, into the lower crankcase. Apply oil to bearing surfaces.



4. Apply sealer GM P/N 12378521 (Canadian P/N 88901148) to the surfaces of the engine block to bedplate mating surfaces.



5. Install the lower crankcase. Tap gently into place with a suitable tool, if necessary. Ensure the lower crankcase is aligned properly on the dowels.

Notice: Refer to Fastener Notice in the Preface section.




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

Tighten

1. Tighten the crankshaft bearing bolts in sequence to 20 N·m (15 lb ft).
2. Using the J 45059 , tighten the crankshaft bearing bolts in sequence to 77 degrees.




Important: Do not forget the 2 rear outer bolts.

7. Install the lower crankcase perimeter bolts.

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