Front Crankshaft Seal: Service and Repair

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 A/C line 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).







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

IMPORTANT: PTFE ring can slip inwards.







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







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.







Remove supporting ring from special tool 11 9 601.

NOTE: Supporting ring is no longer needed.







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







Assemble engine.