Replacing the radial shaft seal of the drive flange

Preliminary work 

• Refer to DEACTIVATING THE 48 V ELECTRICAL SYSTEM .
• Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
• Refer to REMOVING REAR UNDERBODY PROTECTION .
• Refer to REMOVING THE CONNECTING SUPPORT FROM THE TUNNEL .
• Refer to REMOVING COMPLETE EXHAUST SYSTEM .
• Refer to REMOVING THE HEAT SHIELDS .
• Refer to PARTIALLY LOOSENING THE PROP SHAFT .
• Refer to REMOVING TRANSMISSION CROSS-MEMBER .
• Refer to REMOVING THE TRANSFER BOX (ATC 13-1) .
• Refer to REMOVING THE PROP SHAFT FRONT AT THE FRONT AXLE TRANSMISSION .
• Refer to REMOVING THE INPUT FLANGE OF THE FRONT AXLE DIFFERENTIAL .

• Pull radial shaft seal (1) out of front axle differential using special tool 0 490 466 (00 5 010)  .
• Replace radial shaft seal (1).

  Parts:  Radial shaft seal

• Coat the sealing lips of the new radial shaft seal (1) with front axle differential oil.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Version A: 

  Use special tools 2 413 037  and 2 466 745  to strike the radial shaft seal up to the stop of the front axle differential.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Version B: 

  Use special tool 0 493 539 (31 5 130)  to strike the radial shaft seal up to the stop of the front axle differential.

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING THE INPUT FLANGE OF THE FRONT AXLE DIFFERENTIAL .
• Refer to INSTALLING FRONT PROPELLER SHAFT AT THE FRONT AXLE TRANSMISSION .
• Refer to INSTALLING THE TRANSFER BOX (ATC 13-1) .
• Refer to INSTALLING TRANSMISSION CROSS MEMBER .
• Refer to FASTENING THE PROP SHAFT (PARTIALLY REMOVED) .
• Refer to INSTALLING THE HEAT SHIELD .
• Refer to INSTALLING THE COMPLETE EXHAUST SYSTEM .
• Refer to INSTALLING THE CONNECTING SUPPORTS ON THE TUNNEL .
• Refer to RECONNECTING ALL BATTERY GROUND LEADS .
• Refer to CHECKING/TOPPING UP THE TRANSFER BOX OIL (ACTIVE TORQUE CONTROL 13-1) .
• Refer to TOPPING UP/CHECKING FRONT AXLE TRANSMISSION OIL .
• Refer to INSTALLING UNDERBODY PROTECTION AT REAR .
• Refer to ACTIVATING THE 48 V ELECTRICAL SYSTEM .