Crankshaft Main Bearing: Service and Repair

Main Bearing, Engine Set, Renew

Remove components required for access and proceed as follows.

- Remove the oil pan see.

- Remove the oil pump.




- Remove the windage trays securing bolts and remove the windage trays (6 Fig. 1).

- Remove the bolts securing one of the main bearing caps to the cylinder block and remove the cap.

- Remove and discard the bearing shell from the cap and cylinder block.

- Clean the cylinder block and crankshaft,

- Polish the crankshaft journal and liberally coat with oil.

- Feed the new bearing shell into the cylinder block and ensure that the tag is fully seated in its location.

- Fit the other new bearing shell to the bearing cap. Oil the bearing and fit the cap assembly to the cylinder block.

- Fit and torque tighten the securing bolts.

CAUTION: The main bearing securing bolts MUST be renewed during assembly and torque tightened as described under Engine, Service and Repair, Service Procedures, SPS Joint Control System.




Note: Ensure that the bearing cap is the correct way round, with the cap numbers corresponding to the numbers stamped on the oil pan mounting face (1 Fig. 2).

- Rotate the crankshaft to ensure that it is not being `pinched' and will rotate freely.

- Repeat the procedure for the remaining six caps and shells.

- Mount a suitable dial gauge and check the crankshaft end-float.

- Recheck the end-float and if satisfactory, clean the main bearing cap and bearing and lubricate with clean engine oil.

- Refit the cap and bearing assembly, remove the dial gauge and torque tighten the main bearing cap securing bolts.

CAUTION: The main bearing securing bolts MUST be renewed during assembly and torque tightened as described under Engine, Service and Repair, Service Procedures, SPS Joint Control System.

- Refit the windage trays to the cylinder block. Fit and tighten the securing bolts.

- Refit the oil pump.

- Refit the oil pan.

Replace the components removed for access.