11 14 005 Replacing Front Crankshaft Radial Seal (N12)

Special tools required: 

• 11 9 601 
• 11 9 602 
• 11 9 603 

Necessary preliminary tasks: 

• Remove vibration damper.
• Remove A/C line from compressor.

If the central bolt is released, the sprocket wheels of the timing chain and the oil pump will no longer be non-positively connected to the crankshaft. The camshafts to the crankshaft can warp (risk of damage)  .

Fig 1: Identifying Crankshaft Central Bolt

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Drive PTFE ring inwards with a drift (1) until PTFE ring tilts outwards at bottom.

Fig 2: Identifying PTFE Ring Inwards With Drift

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Secure special tool 11 9 601  with screws (1) to crankshaft to 15 Nm.

Fig 3: Identifying Special Tool (11 9 601) To Crankshaft

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Installation: 

Apply a light coating of oil to special tool 11 9 601  .

Position PTFE ring (2) with supporting ring (1) on special tool 11 9 601  .

Push PTFE ring (2) over supporting ring (1) in direction of arrow up to crankcase.

Fig 4: Pushing PTFE Ring Over Supporting Ring To Crankcase

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Remove supporting ring from special tool 11 9 601  .

Fig 5: Identifying Special Tool (11 9 601) On Supporting Ring

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Draw in PTFE ring with special tool 11 9 602  in conjunction with special tool 11 9 603  until flush.

Fig 6: Identifying Special Tool (11 9 603 And 11 9 602)

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Assemble engine.