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

Necessary preliminary tasks:

Disconnect NEGATIVE BATTERY LEAD .
Secure engine hood in SERVICE POSITION .
Remove cowl panel COVER .
Remove TRAILING LINKS .
Remove INTAKE PLENUM .
Remove CLEAN AIR PIPE .
Draw off A/C SYSTEM .
Remove the CATALYTIC CONVERTER r.
Remove TRANSMISSION .
Remove front OUTPUT SHAFTS .
Drain ENGINE OIL .
Loosen the ENGINE OIL PIPE on the engine oil cooler.
Remove FAN COWL with electric fan.
Remove RADIATOR .
Remove EXPANSION TANK .
Detach all coolant hoses from engine.
Detach vacuum line from brake booster.
Unfasten ENGINE WIRING HARNESS and lay to one side.
Release ground cable from engine support arm.

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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Release screws (1, 2).

Remove heater end panel (3).

Installation note:

Make sure heater end panel is correctly seated.

M6x20 bolt must be fitted in middle.

Fig 2: Identifying Heater End Panel And Screws

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Support engine with special tool 11 7 310 on steering box.

Fig 3: Supporting Engine With Special Tool (11 7 310) On Steering Box

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Release screws (1) of A/C lines and disconnect.

Do not remove air conditioning compressor.

Fig 4: Identifying Screws Of A/C Lines

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Detach right pressure pipe (1) from charge air cooler.

Fig 5: Identifying Right Pressure Pipe

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Release nuts (1).

Remove the protective plate (2).

NOTE: Illustration shows all-wheel drive vehicle.

Fig 6: Identifying Protective Plate And Nuts

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Unlock and detach fuel and tank ventilation line (1).

Detach vacuum hose (2) for engine mount.

Fig 7: Identifying Tank Ventilation Line And Vacuum Hose

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Release power steering pump (1) and set down on front axle support.

NOTE: Do not disconnect hydraulic lines.
Shown without air conditioning compressor for purposes of clarity.

Fig 8: Identifying Power Steering Pump

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Installation of special tool 11 8 680 on rear lifting eye (transmission side).

Position special tool 11 8 680 with the ball lock pin (1) pressed into the lifting eye.

Pull ball lock pin (1) toward the rear until both balls (2) are pushed outward.

Installation note:

Check the correct installation of special tool 11 8 680.

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

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

Fig 9: Pulling Ball Lock Pin

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Attach special tool 11 0 000 to engine lifter.

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

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

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Release nut on engine mount on left and right.

Unscrew nuts (1).

Installation note:

Replace self-locking nuts.

Tightening torque 22 11 2AZ .

Fig 11: Identifying Nuts

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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 lifter.

Fig 12: Lifting Engine With Crane

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Assemble engine.

Check function of DME.