11 00 050 Removing and installing engine (N20)

Special tools required: 

• 11 0 000 .
• 11 7 310
• 11 8 680
• 13 5 281 .
• 13 5 282 .
• 72 15 8 108 670
• 13 5 161 .
• 13 5 162 .
• 00 9 030 .

Necessary preliminary tasks: 

• Disconnect negative BATTERY CABLE .
• Move ENGINE COMPARTMENT LID into service position
• Remove EXHAUST SYSTEM .
• Remove GEARBOX .
• Remove OUTPUT SHAFTS at front (all-wheel drive vehicles only)
• Drain off ENGINE OIL .
• Remove firewall upper part SOUND INSULATION .
• Remove SUSPENSION CROSS-BRACE .
• Remove INTAKE SILENCER HOUSING .
• Remove BOTTOM CLEAN AIR PIPE .
• REMOVE left charge air duct
• REMOVE right charge air duct
• Detach all coolant hoses from engine
• Remove COOLANT THERMOSTAT .
• Evacuate HEATING AND AIR CONDITIONING SYSTEM .

For removing and installing the engine, the towing hook 72 15 8 108 670 is required.

Fig 1: Identifying Towing Hook (72 15 8 108 670)

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Fold back cover (1).

Release nut underneath. Remove positive battery cable lead (2) from positive battery connection point.

Tightening torque 12 42 3AZ .

Fig 2: Identifying Positive Battery Cable Lead And Cover

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Release vacuum line (1) to vacuum pump.

Fig 3: Identifying Vacuum Line

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Detach the fuel line at the snap fastener (1).

Unlock tank ventilation line (2) and disconnect.

Fig 4: Identifying Fuel Line Fastener And Tank Ventilation Line Connection

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Close off fuel line with special tool 13 5 161 .

Close off fuel line with special tool 13 5 162 .

Fig 5: Closing-Off Fuel Lines Using Special Tools

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Release screws (1) and remove refrigerant lines.

Tightening torque 64 52 4AZ .

Installation note: 

Replace sealing rings.

Use special tool 00 9 030 to install sealing rings without damaging them.

Fig 6: Identifying Screws Of Refrigerant Lines

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Unlock and pull off connector (1) from DME control unit.

Place engine wiring harness to one side.

Fig 7: Identifying DME Control Unit Connector

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Unlock and pull off connectors (1) to (3).

Securely attach engine wiring harness to engine.

Fig 8: Identifying Connectors

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Release screws (1) on engine mount on left and right.

Tightening torque: 22 11 2AZ .

Fig 9: Identifying Screws On Engine Mount

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Schematic diagram:

Screw towing eye (1) into cylinder head.

Tightening torque 11 12 5AZ .

Attach special tool 11 0 000 to engine crane.

Suspend special tool 11 0 000 only from designated mounting eyelets (2).

Fig 10: Attaching Special Tool (11 0 000) To Engine Crane

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Lift engine out with engine crane.

Assemble engine.

Check function of DME.