11 14 005 Replacing front crankshaft seal (N18)

Special tools required:

IMPORTANT: PTFE ring is supplied with a support disc.
Support disc is required as a mounting tool; do not touch the inner surface of PTFE ring with fingers (risk of damage! ).

Necessary preliminary work:

Remove REFRIGERANT LINES from air conditioning compressor.
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. The camshafts can twist 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 punch (1) until PTFE ring tilts outwards at bottom.

IMPORTANT: PTFE ring can slip inwards.

Fig 2: Installing PTFE Ring Using Drift

G04796179

Courtesy of BMW OF NORTH AMERICA, INC.

Use screws (1) to secure the special tool 11 9 601 on the crankshaft to 15 Nm.

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

G04796180

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Lightly oil the special tool 11 9 601 .

Position the PTFE ring (2) with the support disc (1) on special tool 11 9 601 .

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

Fig 4: Pushing PTFE Ring Over Supporting Ring

G04796181

Courtesy of BMW OF NORTH AMERICA, INC.

Remove support disc from the special tool 11 9 601 .

NOTE: Support disc is no longer needed.

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

G04796182

Courtesy of BMW OF NORTH AMERICA, INC.

Use the special tool 11 9 602 together with special tool 11 9 603 to draw the PTFE ring in flush.

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

G04796183

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.