REMOVAL AND INSTALLATION

Removal steps <<A>> >>I<< 1. Oil filter <<B>> >>H<< 2. Engine oil pressure switch 3. Oil filter bracket 4. Gasket <<C>> >>G<< 5. Plug 6. O-ring <<D>> >>F<< 7. Flange bolt >>E<< 8. Front case 9. Gasket 10. Oil pump cover >>D<< 11. Oil pump driven gear >>D<< 12. Oil pump drive gear >>C<< 13. Crankshaft front oil seal >>B<< 14. Counterbalancer shaft oil seal >>A<< 15. Oil pump oil seal 16. Counterbalancer shaft, right 17. Counterbalancer shaft, left

Use special tool oil filter wrench (MB991396, MB991828) or commercially-available tool to remove the oil filter.

Using special tool Oil pressure switch wrench (MB992118) to remove the engine oil pressure switch.

1.Align the special tool, Plug Wrench (MD998162), with the notch. 2.Set the special tool, Plug Retainer (MD998783), pushing it slight. Place the washer to fit the clearance between Plug Retainer and the housing.

caution If loosing the plug cap too much, the oil pump shaft would be affected by excessive force and bent. 3.Loose the plug cap slightly and remove the special tool, Plug Wrench Retainer (MD998162). 4.Remove the plug cap.

1.Remove the plug on the left side of the cylinder block. Insert a cross point screwdriver (shank diameter 8 mm) into the plug hole more than 60 mm to prevent the left counterbalancer shaft from rotating.

2.Loosen and remove the flange bolt.

Use an appropriate socket wrench to install the oil pump oil seal.

Use an appropriate socket wrench to install the counterbalancer shaft oil seal.

Use the special tool Crankshaft front oil seal installer (MD998375) to install the crankshaft oil seal.

Apply engine oil generously to the gears and line up the alignment marks.

1.Install the special tool Crankshaft front oil seal guide (MD998285) on the front end of crankshaft and apply a thin coat of engine oil to the outer surface of the special tool. Be sure to use the special tool when the front case is fitted with an oil seal. 2.Install the front case on the cylinder block with a new front case gasket in between and temporarily tighten all the flange bolts except those that are used for tightening the filter bracket.

3.Install the oil filter bracket on the front case with the oil filter bracket gasket in between and temporarily tighten the washer-assembled bolts. 4.Tighten all the bolts to the specified torques.

1.Insert a correspond screwdriver (shank diameter 8 mm) into the hole in the left side of the cylinder block to prevent the counterbalancer shaft from rotating.

2.Tighten the flange bolts.

3.Fit special tool, Plug Retainer (MD998783), into the plug cap notch.

4.Set the special tool, Plug Retainer (MD998783), pushing it slightly. Place the washer to fit the clearance between Plug Retainer and the housing. caution Unless fitting the clearance between Plug Retainer and the housing, the oil pump shaft would be affected by excessive force and bent. 5.Tighten the plug cap to the specified torque of 23 ± 3 N·m.

1. caution Use care not to allow the sealant to plug the oil passage. Apply sealant to the engine oil pressure switch thread. Specified sealant: ThreeBond 1141J or equivalent note Install the engine oil pressure switch immediately after applying sealant.

2. caution After the installation, until a sufficient period of time (one hour or more) elapses, do not apply the oil or water to the sealant application area or start the engine. In the same manner as removal, use special tool oil pressure switch wrench (MB992118) to tighten the engine oil pressure switch to the specified torque. Tightening torque: 10 ± 2 N·m

2.Apply a small amount of engine oil to the new oil filter gasket. 3.For the specified tightening torque, refer to the caution label attached on the oil filter. 4.Tighten the oil filter until the gasket contacts with the installation surface. 5.In the same manner as removal, use special tool oil filter wrench (MB991396, MB991828) or commercially-available tool to tighten the oil filter to the specified torque.