REMOVAL AND INSTALLATION

Removal steps >>G<< 1. Crankshaft rear oil seal >>F<< 2. Oil seal case >>E<< 3. Bearing cap bolt <<A>> >>E<< 4. Bearing cap >>D<< 5. Crankshaft bearing, lower 6. Crankshaft >>C<< 7. Thrust bearing >>B<< 8. Crankshaft bearing, upper >>A<< 9. Crankshaft sensing ring 10. Detonation sensor 11. Detonation sensor 12. Bank stiffener 13. Bank stiffener gasket 14. Cylinder block

Using indelible ink, show the front mark and the cap No. on the bearing cap if they cannot be seen.

2.In accordance with the tightening order shown in the illustration, tighten the crankshaft sensing ring to the specified torque. Tightening torque: 12 ± 2 N·m

1.If the upper crankshaft bearing is replaced, select based on the identification mark of cylinder block (illustrated) and the table shown below. Crankshaft journal (Upper) Crankshaft bearing Identification mark Identification mark Number 1 and 4 journal 1 1 2 2 3 3 Number 2 and 3 journal 0 0 1 1 2 2

2.The upper crankshaft bearing has the identification mark on the location shown in the illustration. 3.Install the upper selected crankshaft bearing.

1.Install the thrust bearing in the No.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.

1.If the lower crankshaft bearing is replaced, select based on the identification mark of crankshaft (illustrated) and the table shown below. Crankshaft journal (Lower) Crankshaft bearing Identification mark Identification mark 0 0 1 1 2 2 3 3 4 4

2.The lower crankshaft bearing has the identification mark on the location shown in the illustration. 3.Install the lower selected crankshaft bearing.

2.Check in the following procedure before reusing the connecting rod bolt. (1) Measure the outside diameter "A." (2) Measure the smallest outside diameter "B". (3) If the difference of outside diameter of thread exceeds the limit, replace the connecting rod bolt. Limit: 0.1 mm 3.Attach the bearing cap on the cylinder block as shown in the illustration. 4.Tighten the bearing cap bolts to specified torque in the sequence shown in the illustration. Tightening torque: 24 ± 2 N·m

5.Make a paint mark on the head of each bolt. 6. caution When the tightening angle is smaller than the specified tightening angle, the appropriate tightening capacity cannot be secured. When the tightening angle is larger than the specified tightening angle, remove the bolt to start from the beginning again according to the procedure. Make a paint mark on the bearing cap 90° from the paint mark made on the bolt, in the direction of tightening the bolt. 7.Turn each bolt 90° in the tightening sequence specified in step 2, and make sure that the paint marks on the bolt and cap are aligned. 8.Check that the crankshaft rotates smoothly.

9.Check the axial play. If it exceeds the limit value, replace the thrust bearing. Standard value: 0.05 - 0.25 mm Limit: 0.3 mm

Using special tools Handle (MB992075) and Crankshaft rear oil seal installer (MB992183), press-fit a new crankshaft rear oil seal into the oil seal case. note Put the edge position in place as shown in the illustration.

3.Apply a 2.5 ± 0.5 mm diameter bead of sealant to the oil seal case. Specified sealant: Three bond 1217G or equivalent 4.Apply a small amount of engine oil to the entire circumference of the oil seal lip section, and place the oil seal case on the cylinder block. note Install the oil seal case within 15 minutes after applying liquid gasket. note Then wait at least one hour. Never start the engine or let engine oil or coolant touch the adhesion surface during that time.