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11 14 005 Replacing front crankshaft seal (N20)

Special tools required: 

Necessary preliminary tasks: 

IMPORTANT: Do not release central bolt  .
If the central bolt is released, the sprockets of the timing chain and the oil pump will no longer be non-positively connected to the crankshaft. Intake and exhaust camshafts can turn in relation to crankshaft.
Risk of damage! 
Fig 1: Identifying Central Bolt
G09844534Courtesy of BMW OF NORTH AMERICA, INC.

Screw special tool 11 0 371 to 50 Nm into crankshaft seal.

Screw in spindle 11 0 372 .

Release crankshaft seal from housing.

Repeat the operation several times if necessary.

Order number: 83 30 0 496 275

Fig 2: Releasing Crankshaft Seal From Housing
G09919714Courtesy of BMW OF NORTH AMERICA, INC.

Carefully saw open crankshaft seal (1) at cutting line (2).

Remove crankshaft seal (1) from special tool 11 0 371 .

Fig 3: Identifying Crankshaft Seal And Cutting Line
G05475835Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: The following text describes installation and sealing between the engine block and crankshaft seal.
The engine block will not be leak proof at the outside of the crankshaft seal if you fail to comply with the individual work steps and the work sequence.

Connect support sleeve (1) at special tool 2 212 822 .

Position radial shaft seal (2) carefully in direction of arrow on the special tool 2 212 822 .

Fig 4: Positioning Radial Shaft Seal On Special Tool (2 212 822)
G09919716Courtesy of BMW OF NORTH AMERICA, INC.

Slide the radial shaft seal (1) all the way home.

Remove supporting sleeve (2).

Fig 5: Identifying Radial Shaft Seal And Supporting Sleeve
G09919717Courtesy of BMW OF NORTH AMERICA, INC.

Attach special tool 2 212 822 to the crankshaft using 2 screws (1).

Fig 6: Securing Special Tool (2 212 822) To Crankshaft With Screws
G09919718Courtesy of BMW OF NORTH AMERICA, INC.

Align radial shaft seal (1) in parallel with the special tool 11 9 231 for housing separation.

Fig 7: Aligning Radial Shaft Seal In Parallel With Special Tool (11 9 231)
G09919719Courtesy of BMW OF NORTH AMERICA, INC.

Draw in radial shaft seal with special tool 11 9 231 in conjunction with special tool 11 9 233 until flush.

Fig 8: Installing Radial Shaft Seal
G09919720Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

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