Front Crankshaft Seal: Service and Repair

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 the A/C line from the 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.).







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

IMPORTANT: PTFE ring can slip inwards.







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







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.







Remove support disc from the special tool 11 9 601.

NOTE: Support disc is no longer needed.







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







Assemble engine.