11 13 000 Removing And Installing, Sealing Or Replacing Oil Sump (N51)

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IMPORTANT: Aluminum-magnesium materials. No steel screws/bolts may be used due to the threat of electrochemical corrosion. A magnesium crankcase requires aluminum screws/bolts exclusively. Aluminum screws/bolts must be replaced each time they are released . Aluminum screws/bolts are permitted with and without color coding (blue). For reliable identification: Aluminum 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 . See 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (N52) .
Lower front axle . See 31 11 506 LOWERING/RAISING FRONT AXLE CARRIER (SPECIAL TOOL SWZ00-2040) or 31 11 506 LOWERING/RAISING FRONT AXLE CARRIER (UNIVERSAL LIFTER) .
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. See 11 13 1AZ in OIL SUMP .

Installation:

Replace aluminum screws .

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

Fig 1: Identifying Bolts On Transmission

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Installation:

Replace all seals.

Assemble engine.