45. Lower Crankcase Installation

LOWER CRANKCASE (UNIT REPAIR) INSTALLATION





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





2. Install crankshaft on journals.





IMPORTANT: The lower bearing halves do not have oil grooves.

3. Install lower bearing halves (without grooves) into lower crankcase. Apply clean engine oil to bearing surfaces.





4. Apply RTV Loctite 5900 (P/N 21019581) to surfaces of engine block to bedplate mating surfaces.





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





IMPORTANT: Always use new crankshaft bearing bolts.

6. Install and tighten crankshaft bearing bolts using tightening sequence.
Torque:
Crankshaft Bearing Cap Initial Torque (Lower Crankcase-to-Block Bolts): 20 Nm (15 ft. lbs.) + 70 degrees

Lower Crankcase Perimeter Bolt Tightening Sequence:

7. Tighten lower crankcase perimeter bolts using tightening sequence.
Torque:
Lower Crankcase-to-Block Peripheral Bolts: 25 Nm (19 ft. lbs.)