Oil Pump Chain

REMOVAL AND INSTALLATION









- MB991346: Top cover wrench
- MB991883: Flywheel Stopper
- MD998718: Rear Oil Seal Installer

REMOVAL SERVICE POINTS

[[A]] DRIVE PLATE BOLT / FLYWHEEL BOLT REMOVAL





1. Use special tool MB991883 to secure the drive plate or flywheel.
2. Remove the drive plate bolts or flywheel bolts.

[[B]] OIL PUMP SPROCKET REMOVAL





Fix the oil pump sprocket with a special tool MB991346, loosen a center bolt, and remove the oil pump sprocket.

[[C]] LADDER FRAME REMOVAL





1. Pry the illustrated position with a screwdriver or tap the boss with a hammer.





2. If the ladder frame does not come off, insert a flatblade screwdriver into the gap between the ladder frame and bearing cap as shown in the illustration and lightly pry it to remove the ladder frame.

INSTALLATION SERVICE POINTS

]]A[[ LADDER FRAME INSTALLATION

1.
CAUTION:
Be sure to remove liquid gasket that has entered mounting holes.

Completely remove liquid gasket adhering to the cylinder block and ladder frame.

2.
CAUTION:
Sufficiently check that there is no residual oil on the place where degreasing is performed. If fingerprints are left, do not touch it with bare hands after the degreasing, since the oils from your fingers will harm the seal ability.

Degrease the surface where the liquid gasket is applied and the contact surface between the cylinder block and ladder frame.





3. Squeeze liquid gasket (Three bond 1217G or exact equivalent) of dia.2 to 3 mm (0.08 to 0.12 inch) in thickness and apply it to the illustrated position of the ladder frame.





4. Tighten the ladder frame to the specified torque in the order shown in the illustration.
Specified torque: 26± 1Nm (19± 1 ft-lb)


]]B[[ CRANKSHAFT SPROCKET INSTALLATION





1. Wipe off the dirt on the crankshaft sprocket and the crankshaft using a rag, and then remove the grease from the portion shown in the illustration.
NOTE:
Remove grease to prevent a drop in the coefficient of friction of the pressing portion caused by adhesion of oil.

2. Set the Number 1 piston at top dead center on the compression stroke.
3. Install the crankshaft sprocket to the crankshaft.

]]C[[ OIL PUMP SPROCKET / OIL PUMP CHAIN / OIL PUMP CHAIN GUIDE / OIL PUMP TENSIONER LEVER INSTALLATION

1. Set the Number 1 piston at top dead center on the compression stroke.





2. Using the special tools MB991346, install the oil pump sprocket to the oil pump case.
3. Install the oil pump chain to the crankshaft sprocket.
4. Install the oil pump chain to the oil pump sprocket.

]]D[[ REAR OIL SEAL INSTALLATION

CAUTION:
Do not apply oil to the circumference of the oil seal and oil seal pressing hole on the cylinder block side to prevent teeth from pulling out.





After applying a small amount of engine oil to the oil seal lip, use special tool MD998718 to press fit the oil seal.

]]E[[ FLYWHEEL BOLT / DRIVE PLATE BOLT INSTALLATION

1. Clean off sealant and oil of thread of crankshaft and flywheel bolt.





2. Use special tool MB991883 to secure the flywheel.





3. Apply engine oil to thread of crankshaft and bolt seat area of flywheel or drive plate.
4. Apply the sealant (Three bond 1324 or equivalent) to the thread of flywheel bolt or drive plate bolt.





5. Tighten flywheel bolts to temporary torque 40 Nm (30 ft-lb) in the order shown to illustration.
6. Tighten flywheel bolts or drive plate bolt to specified torque in the order shown in the illustration.
Specified torque: 130Nm (96 ft-lb)