11 00 050 Removing and installing engine (N55)

Special tools required: 

• 11 0 000
• 11 7 310
• 11 8 680
• 13 5 281
• 13 5 282
• 00 9 030

Necessary preliminary work: 

• Disconnect NEGATIVE BATTERY LEAD .
• Disconnect POSITIVE TERMINAL at positive battery connection point in engine compartment.
• MOVE engine compartment lid into service position.
• Remove INTAKE PLENUM .
• Remove CLEAN AIR PIPE .
• REMOVE LEFT CHARGE AIR DUCT .
• Remove right CHARGE-AIR DUCT .
• Remove both tension struts. See TENSION STRUT .
• Remove rear ignition coil cover. See 12..... REMOVING AND INSTALLING/REPLACING REAR IGNITION COIL COVER (N55) .
• Evacuate A/C SYSTEM
• Remove the CATALYTIC CONVERTER .
• Remove TRANSMISSION .
• Remove front OUTPUT SHAFTS
• Remove RADIATOR .
• Detach all coolant hoses from engine.
• Detach vacuum line from brake booster.
• Unfasten ENGINE WIRING HARNESS and lay to one side.

To remove or install 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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Example illustration.

Release screws (2) and remove refrigerant lines (3).

Tightening torque: 64 52 1AZ .

Installation note: 

Replace sealing rings.

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

Fig 2: Identifying Refrigerant Lines And Screws

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Release fuel feed and return lines (1) under vehicle and disconnect.

Fig 3: Identifying Fuel Feed And Return Lines

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Close off fuel line (3) with special tool 13 5 281 .

Close off fuel line (2) with special tool 13 5 282 .

Fig 4: Identifying Fuel Feed And Return Lines

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Attach special tool 11 8 680 to rear lifting eye (gearbox side).

Push ball lock pin (1) in direction of arrow and hold down until special tool 11 8 680X is positioned in lifting eye.

Pull ball lock pin (1) outward in direction of arrow until both balls (2) are pushed outward.

Installation note: 

For checking correct mounting of special tool 11 8 680.

Fig 5: Pushing Ball Lock Pin

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There must be a 6.5 mm gap between ball lock pin (1) and ball lock pin housing.

The gap measurement can be checked using a 6.5 mm drill.

Attach special tool 11 0 000 to engine crane.

Suspend special tool 11 0 000 from the designated mounting eyelets of special tool 11 8 680 only (see arrow).

Fig 6: Suspending Special Tool (11 0 000) From The Designated Mounting Eyelets Of Special Tool (11 8 680)

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

Installation note: 

Replace self-locking nuts.

Tightening torque: 22 11 2AZ .

Fig 7: Identifying Engine Mount Nut

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Screw towing eye into cylinder head.

Tightening torque: 11 12 5AZ .

Suspend special tool 11 0 000 from the designated mounting eyelets (1) only.

Lift engine out with engine crane.

Fig 8: Identifying Special Tool (11 0 000) From Designated Mounting Eyelets

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Assemble engine.

Check function of DME.