Crankshaft Main Bearing: Service and Repair

REMOVE





Figure 8

- Remove the oil pan, oil pump and pipes (1, Fig 8).





Figure 9

- Withdraw the bolts (1, Fig 9) securing the rear main bearing cap and discard the washers. Note the corresponding numbers (2, Fig 9) on the bearing cap and crankcase.
- Withdraw the upper half of the bearing shell.
- Liberally coat the replacement bearing shells with clean engine oil and locate in the crank case and bearing cap.
- Ensure that the lugs on the bearing shell locate correctly.
- Secure the bearing cap using bolts and a new flat washer.
- Tighten the bolts to the correct torque.
- Repeat operations to renew shells on the four intermediate main bearing caps.
- Remove the bolts securing the center main bearing cap.
- Discard the bearing shells and thrust washers.
- Liberally coat the replacement bearing shells and two new thrust washers with clean engine oil and locate the shells in the crankcase and bearing cap.
- Ensure that the lugs on the bearing shell locate correctly.





Figure 10

- Locate the thrust washers (1, Fig 10) on either side of the bearing cap, white metal side outwards, and secure the cap using bolts and new flat washers.
- Tighten the bolts (2, Fig 10) to the correct torque.
- Set the crankshaft to TDC No 6 cylinder (front) firing, and remove distributor cap.
- Remove the setscrew and remove the distributor.





Figure 11

- Remove the bolts (1, Fig 11) securing the front main bearing cap and manoeuvre the cap clear Discard the bearing shells.

REFIT
- Liberally coat the replacement bearing shells with clean engine oil and locate the shells in the crankcase and bearing cap.
- Ensure that the lugs on the bearing shell locate correctly.
- Secure the bearing cap, using the bolts and new flat washers.
- Tighten the bolts to the correct torque.
- Refit the oil pump and pipes (1, Fig 8)