[11D] ENGINE OVERHAUL <4G6-DOHC> - - 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
|  | 2. | Adapter plate
|  | 3. | Flywheel
|  | 4. | Crankshaft bushing
|  | 5. | Rear plate
|  | 6. | Bell housing cover
| >>F<< | 7. | Oil seal case
| >>E<< | 8. | Oil seal
| >>D<< | 9. | Bearing cap bolt
| >>D<< | 10. | Beam bearing cap
| >>C<< | 11. | Crankshaft bearing, lower
|  | 12. | Crankshaft
| >>C<< | 13. | Crankshaft bearing, upper
| >>B<< | 14. | Thrust bearing
<<A>> | >>A<< | 15. | Oil jet
|  | 16. | Cylinder block
| REMOVAL SERVICE POINTS
| <<A>> OIL JET REMOVAL
| CAUTION Be extremely careful not to give damage to the cylinder wall. Use a suitably long metal rod to drive out the oil jet.
| INSTALLATION SERVICE POINTS
| >>A<< OIL JET INSTALLATION
| Using a 4.5 mm diameter pin punch, drive the oil jet from the crankshaft journal bearing bore side of the cylinder block until it bottoms.
| >>B<< THRUST BEARING INSTALLATION
| Install the two thrust bearings in the No. 3 bearing bore in the cylinder block. Each thrust bearing must be installed with the grooved end toward the crankshaft web. NOTE: Applying engine oil to the bearings will help facilitate holding them in position.
| >>C<< CRANKSHAFT BEARING INSTALLATION
| Location of crankshaft journal diameter marks. <Bearing selection example> If the crankshaft journal diameter mark is “0” and the cylinder block bearing bore mark is “1,” then select a bearing with a “2” mark as the No. 1, 2, 4 or 5 bearing and a bearing with a “1” mark as the No. 3 bearing. If the crankshaft journal diameter mark is illegible, measure the journal diameter and select a bearing with the mark corresponding to the measurement.
| The diameter identification marks of the bearing bores in the cylinder block are stamped in the location shown in the drawing.
Crankshaft journal diameter | Cylinder block bearing bore | Crankshaft bearing
--- | --- | ---
Identification mark | Journal diameter measurement mm | Identification mark | Identification mark
0 | 56.994 - 57.000 | 0 | 0
1 | 1
2 | 2
1 | 56.988 - 56.994 | 0 | 1
1 | 2
2 | 3
2 | 56.982 - 56.988 | 0 | 2
1 | 3
2 | 4
| The size mark of each crankshaft bearing is indicated by ink in the location shown in the drawing.
| Install bearing halves with oil grooves in the cylinder block bearing bores. Install bearing halves with no oil grooves in the beam bearing cap.
| >>D<< BEAM BEARING CAP/BEARING CAP BOLT INSTALLATION Install the beam bearing cap on the cylinder block with the arrow pointing to the timing belt.
| Measure the shank length of each bearing cap bolt before installation. If the measurement exceeds the limit, replace the bolt. Limit: 71.1 mm Apply engine oil to the threads and bearing surface of the bolt.
| Tighten the bolts to 25 ± 2 N·m in the indicated sequence. Make a paint mark on the head of the bolt. Make a paint mark on the bearing cap at a point 90 to 100° away from the paint mark made on the bolt head in the tightening direction.
| CAUTION If the tightening angle is less than 90°, adequate tightness could not be assured. If the tightening angle exceeds 100°, loosen the bolt completely and then perform the tightening again beginning with the first step. Turn clockwise the bolts 90° to 100° in the indicated tightening sequence to bring the mark on each bolt head into alignment with that on the bearing cap.
| After installing the beam bearing cap, measure the end play of the crankshaft. If the end play exceeds the limit, replace the crankshaft bearings. Standard value: 0.05 - 0.25 mm Limit: 0.4 mm
| >>E<< REAR 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)
| >>F<< REAR OIL SEAL CASE INSTALLATION 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 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.

[11D] ENGINE OVERHAUL <4G6-DOHC> - - CRANKSHAFT AND CYLINDER BLOCK - REMOVAL AND INSTALLATION | PRINT PAGE / INDEX / PRIOR / NEXT

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