Oil Pan: Service and Repair

11 13 000 - Removing and installing, sealing or replacing oil sump (N51)





Important!
Aluminium-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminium screws/bolts exclusively.
Aluminium screws/bolts must be replaced each time they are released.
Aluminium screws/bolts are permitted with and without
colour coding (blue).
For reliable identification:
Aluminium screws/bolts are not magnetic.
Jointing torque and angle of rotation must be observed without fail (risk of damage).





Necessary preliminary tasks:
- Remove engine splash guard.
- Secure engine in installation position.
- Lower front axle. 31 11 506 Lowering/Raising Front Axle Support
- In all-wheel-drive vehicles:
Remove drive shafts.
Remove front axle differential.





Note:
The lines must be detached from the engine oil sump in the case of the optional extra automatic transmission; if necessary, detach vane pump and place to one side.





Release bolts (3) on transmission.
Detach return hose (2).
Release bolts along line (1).
Tightening torque: 11 13 1AZ [1][2]11 13 Oil Sump.

Installation Note:
Replace aluminium screws.

If necessary, release bolts (4), remove oil level sensor.

Installation Note:
Replace all seals.





Assemble engine.