Crankshaft and Cylinder Block Removal and Installation
CRANKSHAFT AND CYLINDER BLOCK?�w!:
REMOVAL AND INSTALLATION
CAUTION: On the flexible flywheel equipped engines, do not remove any of the bolts "A" of the flywheel shown in the illustration. The balance of the flexible flywheel is adjusted in an assembled condition.
Removing the bolt, therefore, can cause the flexible flywheel to be out of balance and result in damage.
Required Special Tool: MD998718: Crankshaft Rear Oil Seal Installer
Installation Service Points
>>A<< Knock Sensor Bracket Installation
Check that the bracket is in proper contact with the cylinder block boss and tighten to the specified torque in the order shown.
Tightening torque: 28 ± 2 Nm (21 ± 1 ft. lbs.)
>>B<< Crankshaft Bearing Installation
When bearing replacement is required, select and install the correct bearing by the following procedure.
1. Measure the crankshaft journal diameter and confirm its classification from the following table. In the case of a crankshaft supplied as a service part, identification colors/ marks of its journals are painted/stamped at the positions shown in the illustration.
2. The cylinder block bearing bore diameter identification marks are stamped at the position shown in the illustration from left to right, bearing at No.1.
3. For example, if the crankshaft journal outside diameter ID color is "Yellow " and the cylinder block bearing bore ID mark is "111," select a bearing whose ID color is "Green." If there is no ID color paint on the crankshaft, measure the journal outside diameter and select a bearing appropriate for the measured value.
4. Install the bearings having a groove to the cylinder block.
5. Install the bearings having no groove to the bearing cap.
>>C<< Crankshaft Thrust Bearing Installation
1. Install the thrust bearings in the number 3 bearing bore in the cylinder block and in the bearing cap. For easier installation, apply engine oil to the bearings; this will help hold them in position.
2. The thrust bearings must be installed with their groove toward the crankshaft web. The two thrust bearings are different from each other. One has a tab while the other has no tab. Be careful not to confuse them.
>>D<< Bearing Cap/Bearing Cap Bolt Installation
1. Install the bearing cap on the cylinder block, so that the arrow points to the timing belt side.
2. Tighten the bearing cap bolts to 93 ± 5 Nm (69 ± 4 ft. lbs.) in the specified tightening sequence.
3. Check that the crankshaft rotates smoothly.
4. Check the end play. If it exceeds the limit value, replace the thrust bearing.
Standard value: 0.05 - 0.25 mm (0.002 - 0.009 inch)
Limit: 0.3 mm (0.01 inch)
>>E<< Crankshaft Rear Oil Seal Installation
Using special tool MD998718, press-fit a new crankshaft rear oil seal into the oil seal case.
>>F<< Oil Seal Case Assembly Installation
1. Apply sealant Mitsubishi Genuine Part number MD970389 or equivalent to the gasket surface of oil seal case.
NOTE: Be sure to install the case quickly while the sealant is wet (within 15 minutes).
2. Apply engine oil to the lip of the oil seal, and then install the oil seal case onto the cylinder block.
NOTE: After installation, keep the sealed area away from the oil for approximately one hour.