11 14 151 Replacing crankshaft seal at rear (B48, B46)

Special tools required: 

• 23 0 490
• 11 8 815
• 11 9 182
• 11 9 184
• 11 9 181
• 2 360 215
• 11 9 183

Necessary preliminary tasks: 

• Remove FLYWHEEL 

Removal: 

Attention  !

Magnet wheel (1) is magnetic.

Keep magnet wheel (1) in a plastic bag away from debris.

Remove magnet wheel (1) from crankshaft.

Fig 1: Magnet Wheel

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Attention  !

Drill size maximum 2, 5 mm.

Remove debris immediately with vacuum cleaner.

Do not remove debris with compressed air!

Drill a hole in the crankshaft seal using a drill (1) (see arrow).

Fig 2: Drilling Hole In Crankshaft Seal Using Drill

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Attention  !

Risk of damage at the crankcase and on the running surface of the crankshaft.

Immediately carefully remove residual debris.

Screw in special tool 23 0 490 in the direction of the arrow.

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

Fig 3: Driving Out Crankshaft Seal With Impact Weight

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Installation: 

Attention  !

Damage to the crankshaft seal.

Touching the sealing lip (inner) and oiling the crankshaft seal will destroy it.

• Do not touch the sealing lip (inner) of the crankshaft seal.
• Do not oil the crankshaft seal.
• Install the crankshaft seal dry.

Preassemble special tool 11 8 815 on crankshaft.

Carefully slide the crankshaft seal (1) straight off the special tool 11 8 815 using a rotational movement until the crankshaft seal is positioned parallel on the timing case cover.

Remove special tool 11 8 815 .

Fig 4: Installing Special Tool (11 8 815) On Crankshaft

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Secure special tool 11 9 182 with special tool 11 9 184 on the crankshaft.

Fig 5: Fastening Special Tool (11 9 182) With Special Tool (11 9 184) On Crankshaft

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Prepare special tool 11 9 181 for installation.

Connect special tool 2 360 215 onto special tool 11 9 181 .

Fig 6: Connecting Special Tool (2 360 215) Onto Special Tool (11 9 181)

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Draw in crankshaft seal with special tools 11 9 181 and 2 360 215 in conjunction with special tool 11 9 183 .

Fig 7: Drawing In Crankshaft Seal With Special Tools (11 9 181) And (2 360 215)

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Screw in crankshaft seal with special tool 11 9 183 to limit position.

Fig 8: Screwing Crankshaft Seal With Special Tool (11 9 183)

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Note the installation position of the magnet wheel.

Position magnet wheel (1) on crankshaft.

Fig 9: Magnet Wheel

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