Replace the crankshaft seal

WARNING: Working on 12 V 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 DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE CLEAN AIR PIPE WITH THE RESONATOR .
Refer to REMOVING THE FRONT ACOUSTIC COVER FOR THE ENGINE .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THRUST FIELD .
Refer to REMOVING THE CENTER UNDERBODY PROTECTION .
Refer to REMOVING REAR UNDERBODY PROTECTION .
Refer to REMOVING THE CONNECTING SUPPORT FROM THE TUNNEL .
Refer to REMOVING COMPLETE EXHAUST SYSTEM .
Refer to REMOVING STARTER MOTOR .
Refer to REMOVING THE HEAT SHIELDS .
Refer to PARTIALLY LOOSENING THE PROP SHAFT .
Refer to RELEASING THE FRONT PROP SHAFT ON THE FRONT AXLE TRANSMISSION .
Refer to REMOVING THE RETAINING PLATES .
Refer to REMOVING EXHAUST SYSTEM HOLDER .
Refer to DISCONNECTING HYDRAULIC LINES ON THE TRANSMISSION .
Refer to DETACHING TRANSMISSION CROSS MEMBER .
Refer to REMOVING AUTOMATIC TRANSMISSION (ALL-WHEEL DRIVE VEHICLE) (GA8HP51Z) .
Refer to REMOVING FLYWHEEL .

Removing the rear crankshaft seal

Drill a hole at the crankshaft seal.

NOTE: Use the drill (1) with a maximum diameter of 2.5 mm.

Remove the shavings immediately with the vacuum cleaner. Do not remove shavings with compressed air!

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Screw in special tool 0 491 454 (23 0 490) in the arrow direction.
Drive out the crankshaft sealing ring with impact weight in the arrow direction.

Courtesy of BMW OF NORTH AMERICA, INC.
Replace crankshaft seal.

Parts: Crankshaft seal

Installing the rear crankshaft seal

NOTE: RISK OF DAMAGE
Radial shaft seal damage.
Taping the sealing lip (inner) and applying oil to the radial shaft seal will lead to its destruction.

Do not tap the sealing lip (inner) of the radial shaft seal.
Do not apply oil to the radial shaft seal.
Install the radial shaft seal dry.

Preassemble special tool 0 496 137 (11 8 815) on crankshaft.
Carefully slip the crankshaft sealing ring (1) straight off in a rotational movement using special tool 0 496 137 (11 8 815) until the crankshaft sealing ring is on and parallel to the timing case cover.

Courtesy of BMW OF NORTH AMERICA, INC.
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 onto special tool 0 493 881 (11 9 180) .

Courtesy of BMW OF NORTH AMERICA, INC.

Carefully pull in the crankshaft sealing ring straight using special tool 0 494 028 (11 9 181) and 2 360 215 in combination with special tool 0 494 030 (11 9 183).

Courtesy of BMW OF NORTH AMERICA, INC.
Tighten the crankshaft seal ring using the tool (1) till reaching the stop.

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work

Refer to INSTALLING THE FLYWHEEL .
Refer to INSTALLING AUTOMATIC TRANSMISSION (ALL-WHEEL DRIVE VEHICLE) (GA8HP51Z) .
Refer to INSTALLING THE EXHAUST BRACKET .
Refer to INSTALLING TRANSMISSION CROSS MEMBER .
Refer to INSTALLING STARTER MOTOR .
Refer to SECURING THE HYDRAULIC LINES TO THE TRANSMISSION .
Refer to INSTALLING FRONT PROPELLER SHAFT AT THE FRONT AXLE TRANSMISSION .
Refer to FASTENING THE PROP SHAFT (PARTIALLY REMOVED) .
Refer to INSTALLING THE RETAINING PLATES .
Refer to INSTALLING THE HEAT SHIELD .
Refer to INSTALLING THE COMPLETE EXHAUST SYSTEM .
Refer to INSTALLING THE CONNECTING SUPPORTS ON THE TUNNEL .
Refer to INSTALLING THE ACOUSTIC COVER FOR THE ENGINE, FRONT .
Refer to INSTALLING THE CLEAN AIR PIPE WITH THE RESONATOR .
Refer to INSTALLING ACOUSTIC COVER .
Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
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 THE STIFFENING PLATE .
Refer to INSTALLING FRONT UNDERBODY PROTECTION .