Replacing the rear crankshaft seal

WARNING: Working on 12V electrical system.
Risk of short circuits! Risk of fire!

Make sure that there is no charger connected to the jump start terminal in the engine compartment.
Detach battery ground lead from battery.
For auxiliary batteries: Detach battery minus cables from all auxiliary batteries.

CAUTION: Heavy component.
Heavy components can lead to injury or damage.

Remove and install heavy components with the aid of another person/other persons.

NOTE: RISK OF DAMAGE
Damage to battery terminal, the safety battery terminal or the intelligent battery sensor (IBS).
Damaged battery terminals can lead to malfunctions or vehicle electrical system faults.

Detach battery terminal from battery pole by carefully shifting to and fro. Do not pry off using a tool.

Preliminary work

Refer to DEACTIVATING ELECTRICAL SYSTEM .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THE CENTER UNDERBODY PROTECTION .
Refer to IF INSTALLED: REMOVING THE UNDERBODY PLANKING OF THE TRANSMISSION ON THE SIDE .
Refer to REMOVING REAR UNDERBODY PROTECTION .
Refer to REMOVING STARTER MOTOR .
Refer to REMOVING TANK COVER ON LEFT AND RIGHT .
Refer to REMOVING THE CONNECTING SUPPORT FROM THE TUNNEL .
Refer to REMOVING EXHAUST SYSTEM .
Refer to REMOVING THE HEAT SHIELDS .
Refer to REMOVING THE RETAINING PLATES .
Refer to PARTIALLY LOOSENING THE PROP SHAFT .
Refer to REMOVING THE AUTOMATIC TRANSMISSION (ALL-WHEEL DRIVE VEHICLE) .
Refer to REMOVING FLYWHEEL .

Removing the rear crankshaft seal

Provide a vacuum cleaner.
Drill a hole into the crankshaft seal using a 2.5 mm drill (1).

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Immediately remove the shavings from the crankshaft seal (1) carefully using a vacuum cleaner.

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Screw in the special tool 0 491 454 (23 0 490) into the crankshaft seal.
Drive out the crankshaft seal using the special tool 0 491 454 (23 0 490) .

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Replace crankshaft seal.
Parts: Crankshaft seal

Installing the rear crankshaft seal

NOTE: TECHNICAL INFORMATION
The radial shaft seal must be installed dry. Do not use motor oil or lubricant.

Install special tool 0 496 137 (11 8 815) on the crankshaft.
Pull off crankshaft sealing ring (1) in the arrow direction using special tool 0 496 137 (11 8 815) so that crankshaft sealing ring (1) rests all around the timing case cover.
Guide the special tool 0 496 137 (11 8 815) out and remove.

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Secure special tool 0 494 029 (11 9 182) to the crankshaft using special tool 0 494 031 (11 9 184) .

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Connect special tool 2 360 215 to special tool 0 494 028 (11 9 181) in the arrow direction.

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Position special tools 0 494 028 (11 9 181) and 2 360 215 and bring into contact with the crankshaft seal in connection with special tool 0 494 030 (11 9 183) .
Check the freedom of movement between the special tool 2 360 215 and the crankshaft sensor during installation.
Screw in the crankshaft sealing ring up to the stop of the timing case cover using special tool 2 360 215 .

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work

Refer to INSTALLING THE FLYWHEEL .
Refer to INSTALLING AUTOMATIC TRANSMISSION .
Refer to FASTENING THE PROP SHAFT (PARTIALLY REMOVED) .
Refer to INSTALLING THE RETAINING PLATES .
Refer to INSTALLING THE HEAT SHIELDS .
Refer to INSTALLING STARTER MOTOR .
Refer to INSTALLING EXHAUST SYSTEM .
Refer to INSTALLING THE CONNECTING SUPPORTS ON THE TUNNEL .
Refer to INSTALLING TANK COVER ON LEFT AND RIGHT .
Refer to ACTIVATING ELECTRICAL SYSTEM .
Refer to CHECKING ENGINE OIL LEVEL .
Refer to CHECKING/TOPPING UP THE OIL LEVEL IN THE AUTOMATIC TRANSMISSION .
Refer to INSTALLING UNDERBODY PROTECTION AT REAR .
Refer to INSTALLING THE CENTER UNDERBODY PROTECTION .
Refer to INSTALLING FRONT UNDERBODY PROTECTION .
Refer to IF INSTALLED: INSTALLING THE UNDERBODY PLANKING OF THE TRANSMISSION ON THE SIDE .
Refer to INSTALLING ACOUSTIC COVER .