[11F] ENGINE OVERHAUL <4G69> - - CRANKSHAFT AND CYLINDER BLOCK - REMOVAL AND INSTALLATION | PRINT PAGE / INDEX / PRIOR / NEXT

CRANKSHAFT AND CYLINDER BLOCK

REMOVAL AND INSTALLATION
|  |  | Removal steps
--- | --- | --- | ---
|  | 1. | Drive plate bolt(A/T)
|  | 2. | Adapter plate(A/T)
|  | 3. | Drive plate(A/T)
|  | 4. | Crankshaft bushing(A/T)
|  | 5. | Rear plate
|  | 6. | Bell housing cover
| >>E<< | 7. | Oil seal case
| >>D<< | 8. | Oil seal
| >>C<< | 9. | Bearing cap bolt
| >>C<< | 10. | Bearing cap
| >>B<< | 11. | Crankshaft bearing (Lower)
|  | 12. | Crankshaft
| >>B<< | 13. | Crankshaft bearing (Upper)
| >>A<< | 14. | Crankshaft thrust bearing
|  | 15. | Cylinder block
| INSTALLATION SERVICE POINTS
| >>A<< CRANKSHAFT THRUST BEARING INSTALLATION Install the two thrust bearings in the number 3 bearing bore in the cylinder block. For easier installation, apply engine oil to the bearings; this will help hold them in position.
| The thrust bearings must be installed with their groove side toward the crankshaft web.
| >>B<< CRANKSHAFT BEARING INSTALLATION When bearing replacement is required, select and install the correct bearing by the following procedure.
| 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 marks of its journals are stamped at the positions shown in the illustration.
| The cylinder block bearing bore diameter identification marks are stamped at the position shown in the illustration from left to right, beginning at No.1.
Crankshaft journal outside diameter | Cylinder block bearing bore | Crankshaft bearing | Crankshaft bearing for No.3
--- | --- | --- | ---
Identification mark | Size mm | Identification mark | Identification mark | Identification mark
0 | 56.994 - 57.000 | 0 | 1 | 0
1 | 2 | 1
2 | 3 | 2
1 | 56.988 - 56.994 | 0 | 2 | 1
1 | 3 | 2
2 | 4 | 3
2 | 56.982 - 56.988 | 0 | 3 | 2
1 | 4 | 3
2 | 5 | 4
| For example, if the crankshaft journal outside diameter identification mark is "0" and cylinder block bearing bore identification mark is "1," select a bearing whose identification mark is "2" for number 1, 2, 4 and 5, and a bearing whose identification mark is "1" for number 3. If there is no identification mark on the crankshaft, measure the journal outside diameter and select a bearing appropriate for the measured value.
| Install the bearings having an oil groove to the cylinder block. Install the bearings having no oil groove to the bearing cap.
| >>C<< BEARING CAP/BEARING CAP BOLT INSTALLATION Install the bearing caps so that the arrow points to the timing belt side.
| Before installing the bearing cap bolts, check that the shank length of each bolt meets the limit. If it exceeds the limit, replace the bolt. Limit: 71.1 mm Apply engine oil to the threaded portion and bearing surface of the bolt.
| Tighten the bolts to the specified in the tightening sequence shown. Tightening torque: 25 ± 2 N·m
| Make a paint mark on the head of each bolt. Make a paint mark on the bearing cap 90 degrees from the paint mark made on the bolt in the direction of tightening the bolt. CAUTION If the bolt is overtightened, loosen the bolt completely and then retighten it by repeating the tightening procedure from step 4. If the bolt is turned less than 90 degrees, proper fastening performance may not be achieved. Be sure to turn the bolt exactly 90 degrees. Turn each bolt 90 degrees in the tightening sequence specified in step 4, and make sure that the paint marks on the bolt and cap are aligned.
| Make sure that the crankshaft turns smoothly and the end play is correct. If the end play exceeds the limit, replace the number 3 crankshaft bearings. Standard value: 0.05 - 0.25 mm Limit: 0.40 mm
| >>D<< OIL SEAL INSTALLATION
| Use the special tools to press-fit the rear oil seal in the rear oil seal case. Handle (MB990938) Crankshaft rear oil seal installer (MD998776)
| >>E<< SEALANT APPLICATION TO OIL SEAL CASE Remove completely old FIPG remaining on the rear oil seal case and cylinder block.
| Apply a bead of FIPG to the surface of the rear oil seal case as shown in the drawing. Specified sealant: Mitsubishi Genuine Part No.MD970389 or equivalent NOTE: Be sure to install the case quickly while the sealant is wet (within 15 minutes). Install the oil seal into the cylinder block after applying an appropriate amount of engine oil to the entire circumference of its lip portion. Install the rear oil seal case by tightening its bolts to 11 ± 1 N·m. NOTE: After installation, keep the sealed area away from the oil for approximately one hour.

[11F] ENGINE OVERHAUL <4G69> - - CRANKSHAFT AND CYLINDER BLOCK - REMOVAL AND INSTALLATION | PRINT PAGE / INDEX / PRIOR / NEXT

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