Removal and Replacement
OVERVIEWWhen a crankshaft is replaced, all main and connecting rod bearings should be replaced with new bearings. Therefore, selective fitting of the bearings is not required when a crankshaft and bearings are replaced.
REMOVAL
1. Remove the oil pan and oil pickup tube.
2. Remove the timing chain cover and gasket. Remove and discard the front crankshaft oil seal and cover gasket.
3. Remove Transmission (refer to Transmission and Drivetrain).
4. Remove the Rear Main Bearing Seal.
Fig. 72
5. Identify main bearing caps before removal (Fig. 72). Remove bearing caps and lower bearings one at a time.
6. Remove the connecting rod bearing caps.
7. Lift the crankshaft straight out of the block.
8. Remove the upper main bearings from the block.
INSTALLATION
NOTE: Lubricate crankshaft main bearings with clean engine oil.
1. Position upper main bearings into block.
2. Position the crankshaft into the cylinder block.
Main Bearing Bolt Torque
3. Lubricate the main journals with clean engine oil. Install upper main bearings, caps and bolts. Follow the 2 step tightening sequence, starting with main bearing cap 1.
Main Bearing Cap Bolts Torque
Step 1 27 Nm (20 ft. lbs.)
Step 2 115 Nm (85 ft. lbs.)
4. Lubricate the connecting rod bearings and journals with clean engine oil. Carefully install connecting rods to the crankshaft.
5. Using Special Tool 8359 Seal Installer install new oil into oil seal retainer.
6. Using Special Tool 6687 Guide, install the rear seal retainer with a new gasket.
7. Install the timing chain cover with a new gasket and oil seal.
8. Prime oil pump by squirt oil in the oil filter mounting hole and filling the J-trap of the front timing cover. When oil is running out, install oil filter that has been filled with oil.
9. Apply a rearward axial load of 667 N (150 lbs-f) on crankshaft centerline, driving No.3 main cap and thrust bearing against No.3 bulkhead. Repeat procedure, driving crankshaft forward to align rear flange of thrust bearings in a common plane. Front face of No.1 main cap must not extend forward in front of face of No.1 bulkhead.
10. Install the oil pickup tube. Tighten the bolts to 16 Nm (144 in. lbs.) torque.
11. Install the oil pan.