Rear Crankshaft Main Bearing Seal: Service and Repair

(Transmission side)
Remove transmission.
Drain engine oil.
Remove flywheel.





Unfasten oil pan screws on transmission end. Loosen oil pan.





Unfasten screw on rear end cover. Carefully unfasten oil pan seal from end cover and remove end cover.

Note: After removing end cover, check oil sump gasket for damage. If necessary, remove oil sump and replace oil sump gasket.





Note: As from 4/98, a new type of radial seal is used in the Series and as a replacement. This radial seal may only be supported with a "support bushing".

If the radial seal is supported without the support bushing (1) for more than six months, operational reliability will no longer be assured and the radial seal must not be used any further.





Distinguishing feature:
- (1) New version "without hose spring"
- (2) Old version "with hose spring"

Caution: The sealing lip of the new version (1) is very sensitive and must not be kinked under any circumstances. Do not touch the sealing lip with your fingers.





Note: The end cover is in the set with the radial sealing ring. If necessary, lift out the radial sealing ring and drive in new sealing ring using special tool 11 1 260 in conjunction with special tool 00 5 500.





Check for correct fit of hollow bushes (1). Replace seal (2). Apply thin, uniform coat of Drei Bond 1209 sealing compound (or equivalent) to edges of joint on oil pan.





Caution: Do not use special tool 11 2 213 for the new radial seal version.





Note: When mounting the end cover with radial seal on the crankshaft, only the "support bushing (1)" may be used as an installation tool. Lubricate contact face of crankshaft.

Caution: Push on end cover with support bearing (1) straight and without side tilting.





Note: Threads on screws (1) are coated with sealing compound - use new screws. Insert all screws and tighten down end cover.





Note: Store the support bushing (1) of the new radial seal version as a "special tool", then render special tool 11 2 213 unusable and dispose of. The old and new radial seal versions can be installed with the support bushing (1).