Tools Required
J 45059 Angle Meter
- Install the upper crankshaft bearings and lubricate bearing surfaces with engine oil.
- Install the crankshaft on the journals.
- Install the lower bearing halves, without grooves, into the lower crankcase. Apply oil to bearing surfaces.
- Apply sealer GM P/N 12378521 (Canadian P/N 88901148) to the surfaces of the engine block to bedplate mating surfaces.
- 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.
- Install the NEW crankshaft bearing bolts in sequence finger tight.
Tighten
- Tighten the crankshaft bearing bolts in sequence to 20 N·m (15 lb ft).
- Using the
J 45059 , tighten the crankshaft bearing bolts in sequence to 77 degrees.
Important: Do not forget the 2 rear outer bolts.
- Install the lower crankcase perimeter bolts.
Tighten
Tighten the lower crankcase perimeter bolts in sequence to 25 N·m (18 lb ft).