Replacing front crankshaft seal

NOTE: RISK OF DAMAGE
Careless handling of tools and sharp-edged components .
Scratches, surface damage .

Protect working area.
Handle tools and components carefully.

NOTE: TECHNICAL INFORMATION
When the engine is stopped after the completion of trip, it may be necessary to run the electric fan. In rare cases, operation of the electric fan can last up to 11 min. This protects the components. In this case, replacing the electric fan will not remedy the problem!

Preliminary work

Refer to REMOVING THE TOP RIGHT AND LEFT COVER IN THE ENGINE COMPARTMENT .
Refer to REMOVING UPPER CROSS CONNECTION .
Refer to REMOVING THE TENSION STRUT AT THE SHOCK TOWER ON THE LEFT AND RIGHT .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING BOTH INTAKE FILTER HOUSINGS .
Refer to REMOVING THE UNFILTERED-AIR DUCT ON THE RIGHT AND LEFT .
Refer to REMOVING THE REAR TOP CROSS CONNECTION .
Refer to REMOVING FAN COWL .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE COOLANT CIRCUIT .
Refer to REMOVING DRIVE BELT .
Refer to REMOVING THE BELT TENSIONER .
Refer to REMOVING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
Refer to REMOVING THE VIBRATION DAMPER .

Make sure that the grooves of the rotating arms (2) on the special tool 0 493 923 (11 9 410) to insert in the radial shaft seal (1) are at 90° angle to the spindle (3).
Insert the special tool.

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Make sure that the grooves of the rotating arms (2) on the special tool 0 493 923 (11 9 410) to pull out the radial shaft seal (1) are at the spindle (3).
Turn the spindle clockwise (arrow direction).
NOTE: Protect the special tool from falling.
Remove the radial shaft seal (1).
Clean the contact surface of the crankshaft seal (1).

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Replace radial shaft seal (1) at front.
Parts: Radial shaft seal
Position the radial shaft seal (1).
Set and join the special tool 2 0 493 924 (11 9 420) with the central bolt (3).
Use the special tool (2) 0 493 924 (11 9 420) and the central bolt (3) to screw in the radial shaft seal (1) flush.

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Unscrew the central bolt (2) counter-clockwise.
Remove the special tool (1) 0 493 924 (11 9 420) .

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The Woodruff key (1) must be in the crankshaft (3) and the sprocket (2) must be secured from twisting.
If the Woodruff key (1) is missing, it must be replaced and then the valve timings must be set .

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Follow-up work

Refer to INSTALLING THE VIBRATION DAMPER .
Refer to INSTALLING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
Refer to INSTALLING THE BELT TENSIONER .
Refer to INSTALLING DRIVE BELT .
Refer to CHECKING THE COOLANT LEVEL IN THE LOW-TEMPERATURE COOLANT CIRCUIT AND TOPPING UP, IF NEEDED .
Refer to INSTALLING FRONT UNDERBODY PROTECTION .
Refer to INSTALLING FAN COWL .
Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
Refer to INSTALLING THE RIGHT AND LEFT UNFILTERED-AIR DUCT .
Refer to INSTALLING BOTH INTAKE FILTER HOUSING .
Refer to INSTALLING ACOUSTIC COVER .
Refer to INSTALLING TENSION STRUT ON LEFT AND RIGHT SHOCK TOWER .
Refer to INSTALLING UPPER CROSS CONNECTION .
Refer to INSTALLING THE COVER IN THE ENGINE COMPARTMENT AT TOP LEFT AND RIGHT .