Crankshaft

CRANKSHAFT





COMPONENTS

DISASSEMBLY
1. Remove the timing belt, front case, flywheel, cylinder head assembly and oil pan. For details, refer to the respective chapters.
2. Remove the rear plate and the rear oil seal.
3. Remove the connecting rod caps.

NOTE: Mark the main bearing caps to be able to reassemble in the original position and direction.

4. Remove the main bearing caps and the crankshaft. Keep the bearings in order according to the cap number.

INSPECTION
1. Check the crankshaft journals and pins for damage, uneven wear and cracks. Also check the oil holes for restrictions. Repair or replace any defective part.





2. Inspect the crankshaft journal for taper and out-of-round.
Standard value
Crankshaft journal O.D: 56.982 - 57.000 mm (2.2434 - 2.2441 inch)
Crankshaft pin O.D: 44.980 - 45.000 mm (1.7709 - 1.7717 inch)

MAIN BEARINGS AND CONNECTING ROD BEARINGS
Visually inspect each bearing for peeling, melting, seizure and improper contact. Replace any defective bearings.

MEASURING OIL CLEARANCE





Check the oil clearance by measuring the outside diameter of the crankshaft journal as well as the the inside diameter of the bearing. The clearance can be obtained by calculating the difference between the measured diameters.
Standard value
Oil clearance
Crankshaft main bearing
No.1, 2, 4, 5: 0.018 - 0.036 mm (0.0007 - 0.0014 inch)
No.3: 0.024 - 0.042 mm (0.0009 - 0.0017 inch)

REASSEMBLY





1. Install a grooved main bearing (upper bearing) on the cylinder block side.
2. Install a grooveless main bearing (lower bearing) on the main bearing cap side.





3. Both upper and lower center thrust bearings.
4. Apply engine oil to journals and pins. Install the crankshaft.
5. Install the bearing caps with the arrow mark directed toward the front of the engine. The cap number must be correct.
6. Tighten the cap bolts to the specified torque.
Tightening torque
Main bearing cap bolts: 25 Nm (250 kg-cm, 18 ft. lbs.) + (90°)
7. Cap bolts should be tightened evenly in 4 to 5 increments before they are tightened to the specified torque.
8. Make sure that the crankshaft turns freely and check the end play of the crankshaft.





9. Using a special tool (09231 - 21000). Install the oil seal in the oil seal case. A new oil seal should be used.





10. Install the oil seal into the oil seal case so that the oil hole in the separator may be directed downward (arrow in illustration)
11. Install the new oil seal case gasket and oil seal case assembly.
Tightening torque
Oil seal case: 10 - 12 Nm (100 - 120 kg-cm, 7 - 9 ft. lbs.)
(For MET)
12. Install the rear plate to the cylinder block.
13. Install the flywheel assembly and tighten the bolts to the specified torque.
Tightening torque
Flywheel bolt: 130 - 140 Nm (1300 - 1400 kg-cm, 94 - 101 ft. lbs.)
(For A/T)
14. Install the adapter plate to the cylinder block.
15. Install the drive plate and tighten the bolts to the specified torque.
Tightening torque
Driver plate: 130 - 140 Nm (1300 - 1400 kg-cm, 94 - 101 ft. lbs.)