Crankshaft
REMOVAL
1. Remove the timing belt, cylinder head assembly, drive plate, transaxle mounting plate oil pan.
2. Remove the oil seal case 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 remove the crankshaft. Keep the bearings in order by cap number.
INSPECTION
Crankshaft
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 for out-of-roundness and taper of the crankshaft journal and pin.
Standard value
Crankshaft journal O.D: 61.982 - 62.000 mm (2.4402 - 2.4409 inch)
Crankshaft pin O.D: 47.982 - 48.000 mm (1.8891 - 1.8898 inch)
Main Bearings and Connecting Rod Bearings
Visually inspect each bearing for peeling, melt, seizure and improper contact. Replace any defective bearings.
Measuring Oil Clearance
Check for oil clearance by measuring the outside diameter of the crankshaft journal and the inside diameter of the bearing. The clearance can be obtained by calculating the difference between the measured outside and inside diameters.
Standard value
Oil clearance
Crankshaft main bearing 0.004 - 0.022 mm (0.0002 - 0.0009 inch)
Connecting rod bearing 0.018 - 0.036 mm (0.0007 - 0.0014 inch)
Plastic gauge Method
Plastic gauge may be used to measure the clearance.
1. Remove oil and grease and any other dirt from the bearings and journals.
2. Cut the plastic gauge to the same length as the width of the bearing and place it in parallel with the journal, avoiding the oil holes.
3. Install the crankshaft, bearings and caps and tighten them to the specified torques. During this operation, do not turn the crankshaft. Remove the caps. Measure the width of the plastigauge at the widest part by using the scale printed on the gauge package.
If the clearance exceeds the service limit, the bearing should be replaced or an undersize bearing should be used.
When installing a new crankshaft, be sure to use standard size bearings.
Should the standard clearance not be obtained even after replacing the bearing, the journal and pin should be ground to the undersize and a bearing of the corresponding size should be installed.
Oil Seal
Check the front and rear oil seals for damage or worn surfaces. Replace any seal that is defective.
Drive Plate
Replace distorted, damaged, or cracked drive plates.
INSTALLATION
Main Bearing
1. Install the grooved main bearing (upper bearing) on the cylinder block side.
2. Install the grooveless main bearing (lower bearing) on the main bearing cap side.
3. Install the crankshaft. Apply engine oil to the journal and pin.
4. Caps should be installed with the arrow mark directed toward the front of the engine. The cap number sequence must be correct.
5. Tighten all cap bolts to the specified torque and then rotate all bolts to specified angle.
Tightening torque
Main bearing cap bolts
M8: 14 - 118 Nm (140 - 180 kg-cm, 10 - 13 ft. lbs.) + (90° - 94°)
M10: 27 - 33 Nm (270 - 330 kg-cm, 19.5 - 23.9 ft. lbs.) + (90° - 94°)
6. Cap bolts should be tightened evenly in from 4 to 5 stages before they are tightened to the specified torque.
7. Make certain that the crank shaft turns freely and has the proper end play.
Crankshaft end play
Standard 0.070 - 0.250 mm (0.0028 - 0.0098 inch)
Limit 0.35 mm (0.014 inch)
8. Using the special tool (09231-33000), install the rear oil seal in the oil seal case.
9. Apply sealant to the area shown in the illustration. Install the oil seal case on the cylinder block.
Tightening torque
Oil seal case bolt 10 - 12 Nm (100 - 120 kg-cm, 7.3 - 8.6 ft. lbs.)
10. Tighten the transaxle mounting plate to the specified torque.
Tightening torque
Transaxle mounting plate bolt 10 - 12 Nm (100 - 120 kg-cm, 7.3 - 8.6 ft. lbs.)
11. Tighten the drive plate and the adapter plate.
Tightening torque
Drive plate and adaptor plate bolt 73 - 77 Nm (730 - 770 kg-cm, 53 - 55 ft. lbs.)