11 14 005 Replacing front crankshaft radial seal (N14)

Special tools required:

IMPORTANT: PTFE ring is supplied with a supporting ring.
Supporting ring is required as an installation tool; do not touch inner surface of PTFE ring with fingers (risk of damage! ).

Necessary preliminary tasks:

Remove REFRIGERANT LINES from air conditioning compressor.
Remove VIBRATION DAMPER .

IMPORTANT: Do not release central bolt.

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 can warp in relation to the crankshaft (risk of damage! ).

Fig 1: Caution For Central Bolt

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Courtesy of BMW OF NORTH AMERICA, INC.

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

IMPORTANT: PTFE ring can slip inwards.

Fig 2: Installing PTFE Ring Using Drift

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Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 3: Securing Special Tool (11 9 601) To Crankshaft Using Screws

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Courtesy of BMW OF NORTH AMERICA, INC.

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

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Courtesy of BMW OF NORTH AMERICA, INC.

Remove supporting ring from special tool 11 9 601 .

NOTE: Supporting ring is no longer needed.

Fig 5: Removing Supporting Ring From Special Tool (11 9 601)

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Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 6: Installing PTFE Ring Using Special Tool (11 9 602)

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Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.