Bearing Selection
Crankshaft Main Bearing SelectionImportant: If crankshaft bearing failure is because of abnormal wear, investigate the cause. Inspect the crankshaft or the connecting-rod bearing bores.
1. Inspect the connecting-rod bearing bores or the crankshaft main bearing bores using the following procedure:
1.1. Tighten the bearing cap to specification.
1.2. Measure the bearing bore for taper and for an out of round condition.
1.3. Taper or an out of round condition should not exist.
2. Install the original main bearing inserts from the crankshaft onto the cylinder block and onto the main bearing caps.
3. Carefully place the crankshaft onto the bearing inserts in the cylinder block.
4. Lay a piece of gauging plastic (1) across each crankshaft main journal.
Important: Do not turn the crankshaft while measuring the bearing clearance.
5. Carefully place the main bearing caps onto the cylinder block.
6. Install the ten main bearing cap bolts.
Tighten the main bearing cap bolts of the crankshaft in the sequence that is shown. Use three progressive steps in order to obtain 54 Nm (40 ft. lbs.).
7. After reaching the proper torque, remove the ten main bearing cap bolts from the crankshaft.
8. Measure the gauging plastic at the widest point.
^ Standard Oil Clearance: 0.020 - 0.040 mm (0.0008 - 0.0016 inch)
^ Maximum Oil Clearance: 0.060 mm (0.0023 inch)
9. If using a standard bearing, replace the bearing with another bearing having the same color. If the color of the bearing is unclear, select the correct bearing by adding the numbers on the cylinder block and on the crankshaft. Refer to Specifications for the bearing selection table.