Front Crankshaft Seal: Service and Repair

REMOVAL AND INSTALLATION









- MB991883: Flywheel Stopper

- MB991448: Bush Remover And Installer Base

REMOVAL SERVICE POINT

[[A]]
FLYWHEEL BOLT REMOVAL





Fix the flywheel using special tool MB991883, and loosen the flywheel bolts.

INSTALLATION SERVICE POINTS

]]A[[
CRANKSHAFT REAR OIL SEAL CASE ASSEMBLY INSTALLATION

1. Remove all the traces of sealant adhering to the cylinder block and ladder frame using a remover or others. Then, degrease them using.





2. Apply the sealant without any gap to the cylinder block and ladder frame as shown in the figure, and install the crankshaft rear oil seal case assembly.
Specified sealant: ThreeBond 1227D or equivalent
NOTE:
Install the crankshaft rear oil seal case assembly immediately after applying sealant.

3. Apply a small amount of engine oil to the entire inner diameter of the crankshaft rear oil seal lip, and install the crankshaft rear oil seal case assembly.
4.
CAUTION:
After the installation, until a sufficient period of time (one hour or more) elapses, do not apply the engine oil or water to the sealant application area or start the engine.

Tighten the crankshaft rear oil seal case assembly mounting bolts to the specified torque.
Tightening torque: 10 ± 2 Nm (89 ± 17 in-lb)

]]B[[
FLYWHEEL/FLYWHEEL HUB/FLYWHEEL BOLT INSTALLATION

1. Remove the sealant, the engine oil, and other adhering materials from the flywheel bolt threads, crankshaft tapped hole, and flywheel.

2. Install the flywheel and flywheel hub to the crankshaft.





3. Use special tool MB991883 to secure the flywheel in the same manner as removal.
4. Apply a small amount of engine oil to the screw holes of the crankshaft and the bearing surface of the flywheel bolts.





5. Apply sealant to the thread of the flywheel bolts.
Specified sealant: ThreeBond 1324






6. Tighten the flywheel bolts to temporary torque in the order shown in the illustration.
Tightening torque: 40 Nm (30 ft-lb)
7. Tighten the flywheel bolts to specified torque in the order shown in the illustration.
Tightening torque: 130 Nm (96 ft-lb)


]]C[[
CRANKSHAFT FRONT OIL SEAL INSTALLATION

1. Apply a small amount of engine oil to the entire inner diameter of the crankshaft front oil seal lip.





2.
CAUTION:
When installing the crankshaft front oil seal, be careful to avoid damage to the crankshaft front oil seal.

Using special tool MB991448, press in the crankshaft front oil seal up to the chamfered surface of timing chain case.