Replace the crankshaft seal

Preliminary work 

• Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
• Refer to REMOVING THE ACOUSTIC COVER .
• Refer to REMOVING RESONATOR .
• Refer to REMOVING THE FRONT ACOUSTIC COVER FOR THE ENGINE .
• Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
• Refer to REMOVING THE CENTER UNDERBODY PROTECTION .
• Refer to REMOVING REAR UNDERBODY PROTECTION .
• Refer to IF INSTALLED: REMOVE THE UNDERBODY PLANKING OF THE TRANSMISSION ON THE SIDE .
• 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 STARTER MOTOR .
• 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 

• 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 arrow direction.
• Drive out crankshaft seal with impact weight in arrow direction.

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  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 slide the crankshaft seal (1) straight off the special tool 0 496 137 (11 8 815)  using a rotational movement until the crankshaft seal is positioned flush with the timing case cover.

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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  onto special tool 0 493 881 (11 9 180)  .

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• Move in the crankshaft sealing ring with the special tools 0 494 028 (11 9 181)  and 2 360 215  in combination with the special tool 0 494 030 (11 9 183)  .

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• 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 .
• 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 INSTALLING THE ACOUSTIC COVER FOR THE ENGINE, FRONT .
• Refer to INSTALLING RESONATOR .
• Refer to RECONNECTING ALL BATTERY GROUND LEADS
• Refer to CHECKING/TOPPING UP THE OIL LEVEL IN THE AUTOMATIC TRANSMISSION .
• Refer to CHECKING ENGINE OIL LEVEL .
• Refer to INSTALLING THE FRONT UNDERBODY PROTECTION .
• Refer to INSTALLING UNDERBODY PROTECTION AT REAR .
• Refer to INSTALLING THE CENTER UNDERBODY PROTECTION .
• Refer to IF INSTALLED: INSTALL THE UNDERBODY PLANKING OF THE TRANSMISSION ON THE SIDE .
• Refer to INSTALLING ACOUSTIC COVER .