Front Crankshaft Seal: Service and Repair

CRANKSHAFT OIL SEAL

REMOVAL AND INSTALLATION

Crankshaft Front Oil Seal Removal Steps 1, Crankshaft Rear Oil Seal Removal Steps 2-5:

Required Special Tools:
^ MB991883: Flywheel Stopper
^ MB991448: Bush Remover And Installer Base

REMOVAL SERVICE POINT

[A] FLYWHEEL BOLTS 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 quick-drying degreasing agent (white gasoline).





2. Apply the sealant without any gap to the cylinder block and ladder frame as shown in the figure. Within three minutes, install the crankshaft rear oil seal case assembly.

Specified sealant: Three bond 1227D or equivalent

3. Apply a small amount of engine oil to the entire inner diameter of the oil seal lip, and install the crankshaft rear oil seal case assembly.

CAUTION
Do not apply oil or water to the sealant-applied area or start up the engine within 2 hours after the installation of the crankshaft rear oil seal.

4. 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 [TC-SST]/FLYWHEEL BOLTS INSTALLATION
1. Remove the engine oil and deposits from the flywheel bolt threads, crankshaft tapped hole, and flywheel.
2. Install the flywheel and flywheel hub [TC-SST] to the crankshaft.





3. Use special tool MB991883 to secure the flywheel assembly in the same manner as removal.





4. Apply a small amount of engine oil to the bearing surfaces of flywheel bolts and crankshaft tapped hole, and apply the sealant to the bolt threads of flywheel.
Specified sealant: Three bond 1324 or equivalent





5. Tighten flywheel bolts to temporary torque 40 Nm (30 ft-lb) in the order shown in the illustration.
6. Tighten 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 oil seal lip.

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





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