11 14 005 Replacing front crankshaft radial seal (N14)

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

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 A/C line. See 64 52 520 REMOVING AND INSTALLING/REPLACING COMPLETE A/C COMPRESSOR (N12) from 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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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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Secure special tool 11 9 601 with screws (1) to crankshaft to 15 Nm.

Fig 3: Securing Special Tool (11 9 601) With Screws

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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

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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)s

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

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Assemble engine.