70. Crankshaft and Bearing Installation

Crankshaft and Bearing Installation

Special Tools

J 45059 - Angle Meter

For equivalent regional tools, refer to Special Tools (Special Tools).




1. Install the upper crankshaft main bearings into the block.




2. Lubricate the upper crankshaft main bearing surface with clean engine oil.
3. Install the crankshaft.





Note: Refer to the pin stamp on the crankshaft main bearing caps for sequence and direction of installation.

4. Install the lower crankshaft main bearings into the main bearing caps.
5. Lubricate the lower crankshaft main bearing surface with clean engine oil.
6. Install the crankshaft main bearing caps.





Note: The crankshaft main bearing cap stiffener is directional. The end marked front goes to the front.

7. Install the crankshaft main bearing cap stiffener.




8. Install new crankshaft main bearing bolts. Start the crankshaft main bearing cap bolts by hand. Ensure the bottom of the crankshaft main bearing cap is parallel to the block surface.





Caution: Refer to Fastener Caution (Fastener Caution).

9. Tighten the crankshaft main bearing cap bolts in equal increments.

1. Tighten the crankshaft main bearing cap bolts to 25 Nm (18 lb ft) in sequence.
2. Use J 45059 - meter to tighten the crankshaft main bearing cap bolts an additional 180 degrees.




10. Measure the crankshaft end play.

1. Thrust the crankshaft forward or rearward.
2. Insert a feeler gauge between the thrust crankshaft bearing and the bearing surface of the crankshaft and measure the bearing clearance. Refer to Engine Mechanical Specifications (Service Limits & General Specifications) for the proper clearance.
3. If the bearing clearance is not within specifications, inspect the thrust surfaces for nicks, gouges or raised metal. Minor imperfections may be removed with a fine stone.