11 13 000 Removing and installing, sealing or replacing oil sump (B48, B46)

Special tools required: 

• 11 4 472
• 11 4 471
• 11 8 780

Necessary preliminary tasks: 

• Disconnect NEGATIVE BATTERY LEAD
• Remove RIGHT CHARGE-AIR DUCT 
• Remove STARTER MOTOR
• Remove HOLDER
• Drain off ENGINE OIL

Attention  !

Engines with surface sealant:

Application time of sealing bead max. 12 minutes

Removal: 

Release tank ventilation line (1) at clamp (2).

Fig 1: Tank Ventilation Line And Clamp

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Disconnect tank ventilation line (1) at connection (2).

Fig 2: Ventilation Line And Connection

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Unlock and disconnect connector (1) for oil-level sensor.

Release screw (2).

Remove cable routing (3).

Disengage the positive battery cable on the clamp (4).

Fig 3: Cable Routing, Clamp, Connector And Screw

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Loosen screws (1).

Release screws (2-20).

Fig 4: Oil Sump Screws Loosening/Tightening Sequence

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Engine with liquid sealing compound: 

Attention  !

The oil sump can only be loosened in the areas (1) where an aperture is present in the oil sump.

Fig 5: Oil Sump Loosening Areas

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Use a mounting lever (1) to release oil sump in direction of arrow at the correct location.

Fig 6: Releasing Oil Sump Using Mounting Lever

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Attention  !

Do not use any metal-cutting tools (e.g. emery cloth).

Preparation for installation: 

Clean sealing residues from oil sump and crankcase.

Clean sealing surface (1) with special tool 11 4 472 .

Fig 7: Cleaning Sealing Surface With Special Tool (11 4 472)

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Clean sealing surface (1) with special tool 11 4 471 .

Installation note: 

Sealing surfaces must be free of oil, grease and cleaning agents.

Fig 8: Cleaning Sealing Surface With Special Tool (11 4 471)

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Applying sealing compound without replacing front bottom timing case cover: 

Apply SEALING COMPOUND 2.2  in this area (1).

Make sure that the sealing bead runs along the inner edge.

The oil return orifice must be rounded completely.

Fig 9: Applying Sealing Compound On Front Bottom Timing Case Cover

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Sealant height approximately 2 to 2.5 mm.

Installation: 

Installation note: 

Special tool 11 8 780 is only necessary if the engine or the transmission is removed.

Fig 10: Positioning Special Tool (11 8 780) With Torx Screw

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Position the special tool 11 8 780 with the Torx screw (1) from the transmission so that the engine oil sump is exactly flush with the engine block.

If necessary, replace fitting sleeves.

Attaching the oil sump.

Join bolts (2) to (20) to 5 Nm. 

Join bolts (1) to 5 Nm. 

Tighten bolts (2) to (20).

Tightening torque: 11 13 2AZ .

Tighten down screws (1).

Tightening torque: 24 00 1AZ .

Fig 11: Oil Sump Screws Loosening/Tightening Sequence

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Clip in the positive battery cable in the clamp (4).

Properly route the cable at the oil sump.

Position cable routing (3) and fasten with screw (2).

Connect connector (1) for oil-level sensor.

Fig 12: Cable Routing, Clamp, Connector And Screw

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Connect tank ventilation line (1) at separation point (2).

Fig 13: Ventilation Line And Connection

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Clip in the tank ventilation line (1) into the clamp (2).

Fig 14: Tank Ventilation Line And Clamp

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Required follow-up work: 

• Top up ENGINE OIL 
• Check engine for leak tightness