11 14 005 Replacing front crankshaft radial seal (N12)

WARNING: This page is about a different variant/trim than selected.

Special tools required:

11 9 601
11 9 602
11 9 603

IMPORTANT: PTFE ring is supplied with a supporting ring.
Supporting ring is required as an installation tool.
Do not touch inner sealing face of PTFE ring with fingers (risk of damage).

Necessary preliminary tasks:

Remove VIBRATION DAMPER .
Remove A/C line from compressor. See REMOVING AND INSTALLING/REPLACING COMPLETE A/C COMPRESSOR .

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 to the crankshaft can warp (risk of damage).

Fig 1: Do Not Release Central Bolt

G04725403

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: Driving PTFE Ring Inwards With Drift

G05515501

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 3: Identifying Special Tool (11 9 601) And Screws

G05515502

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

G05515503

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: Identifying Supporting Ring And Special Tool (11 9 601)

G05515504

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: Identifying Special Tools (11 9 602 And 11 9 603)

G05515505

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.