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.