Front Crankshaft Seal: Service and Repair

11 14 005 Replacing Front Crankshaft Radial Seal (N16)

Special tools required:







IMPORTANT:
PTFE ring is supplied with a support disc.
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.
- Disconnect A/C lines from compressor.







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 will be able to rotate relative to the crankshaft (risk of damage).







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

IMPORTANT: PTFE ring can slip inwards.







Attach special tool 11 9 601 to crankshaft using bolts (1) tightened to 15 Nm.







Installation note:
Apply a thin coating of oil to special tool 11 9 601.

Position PTFE ring (2) and supporting disc (1) on special tool 11 9 601.
Push PTFE ring (2) over support disc (1) in direction of arrow up to crankcase.







Remove supporting disc from special tool 11 9 601.

NOTE: Support disc is no longer needed.







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







Assemble engine.