11 14 005 Replacing front crankshaft seal (N20)

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Special tools required:

11 0 371 .
11 0 372 .
83 30 0 496 275
2 212 822 .
11 9 231 .
11 9 233 .

Necessary preliminary tasks:

Remove VIBRATION DAMPER .

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

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Screw special tool 11 0 371 to 50 Nm into radial shaft 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

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

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

Fig 3: Identifying Cutting Line On Crankshaft Seal

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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 supporting sleeve (1) to special tool 2 212 822 .

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

Fig 4: Connecting Supporting Sleeve To Special Tool 2 212 822 Positioning Radial Shaft Seal

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

Remove supporting sleeve (2).

Fig 5: Identifying Radial Shaft Seal And Supporting Sleeve

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Secure special tool 2 212 822 to the crankshaft with 2 screws.

Fig 6: Securing Special Tool 2 212 822 To Crankshaft With Screws

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

Fig 7: Aligning Radial Shaft Seal With Special Tool 11 9 231

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

Fig 8: Drawing-In Radial Shaft Seal Until Flush

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Assemble engine.