Crankshaft Main Bearing: Service and Repair

REMOVAL
1. Remove the following components:
a. Timing belt train.
b. Front case.
c. Flywheel.
d. Cylinder head assembly.
e. Oil pan.
2. Remove the rear plate and the rear oil seal.
3. Remove the connecting rod caps.

NOTE: Mark the main bearing caps to permit reassembly in the original position and direction.

4. Remove the main bearing caps and remove the crankshaft.
5. Remove bearings from block and caps. Keep the bearings in order by cap number.

INSTALLATION






1. Install the upper main bearings in the cylinder block.
2. Install the lower main bearings in the main bearing caps.

CAUTION: Install the bearing with the oil hole in the block.






3. Install the thrust washers in the No. 3 main bearing cap with the oil grooves facing outward. Install grooved main bearing (upper bearing) on cylinder block side.
4. Install grooveless main bearing (lower bearing) on main bearing cap side.
5. Install crankshaft. Apply engine oil to journal and pin.
6. Install caps with arrow mark directed toward front of engine. Cap number must be correct.




7. Tighten cap bolts to 75-85 Nm (750-850 kg. cm, 55-61 ft. lbs.).

NOTE: Cap bolts should be tightened evenly in 4 to 5 stages before they are tightened to specified torque.






8. Make certain that crankshaft turns freely and has proper end play.
Standard value, 0.05-0.25 mm (0.0020-0.0098 inch).
Wear limit, 0.3 mm (0.012 inch).