11 00 050 Removing and installing engine (N54, N54T)

WARNING: This page is about a different variant/trim than selected.

Special tools required:

IMPORTANT: Aluminium screws/bolts must be replaced each time they are released .
Aluminium screws/bolts are permitted with and without
colour coding (blue).

For reliable identification:

Aluminium screws/bolts are not magnetic .

Jointing torque and angle of rotation must be observed without fail (risk of damage) .

Necessary preliminary tasks:

Disconnect negative battery cable.
Move engine compartment lid into ASSEMBLY POSITION .
Remove AIR FILTER HOUSING .
REMOVE fan cowl with electric fan.
Remove RADIATOR .
Remove CAPACITOR
Remove CHARGE AIR COOLER .
Remove EXPANSION TANK .
Detach all coolant hoses from engine.
Remove rear AIR DUCT .
Detach vacuum line from brake servo.
Unfasten engine wiring harness from electronics box and lay to one side.
Remove EXHAUST SYSTEM .
Remove transmission See 23 00 018 REMOVING AND INSTALLING TRANSMISSION (GS6-53BZ) N54 or 28 00 001 REMOVING AND INSTALLING TWIN-CLUTCH GEARBOX (GS7D36SG) N54 .
Release STEERING SHAFT from steering gear (do not remove)
Release grounding cable on left engine support arm.

Release nut (1) and disconnect positive battery cable (2) from positive battery connection point.

Fig 1: Identifying Positive Battery Cable And Nut

G06904082

Disconnect fuel lines (1).

Seal fuel lines with special tool 13 5 161 and 13 5 162 .

Disconnect tank vent line (2).

Fig 2: Identifying Fuel Line And Tank Vent Line

G06904083

Release bolt (1) from engine oil pipe on oil-to-water heat exchanger.

Remove engine oil pipe.

Installation note:

Replace all gaskets.

Tightening torque 17 21 1AZ .

Fig 3: Identifying Engine Oil Pipe Bolt

G06174849

Secure special tool 11 8 680 to lifting eye on gearbox side.

Press locking pin (1) in direction of arrow until locking balls (2) are loose.

Secure special tool 11 8 680 to lifting eye. Release locking pin (1).

Installation note:

Special tool 11 8 680 is mounted correctly if the locking balls (2) are locked.

Special tool 11 8 680 is firmly secured to lifting eye.

Fig 4: Pressing Engine Locking Pin

G04754750

Attach special tool 11 0 000 to special tool 11 8 680 in eye (1).

Graphic E9x.

Fig 5: Attaching Special Tool (11 8 680) Into Engine Eye

G04754751

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

Installation note:

Replace self-locking nut.

Tightening torque 22 11 2AZ .

Fig 6: Identifying Engine Mount Nut

G04739616

Screw in towing hook (1).

Suspend special tool (4) 11 0 000 from engine lifter.

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

Unscrew left and right engine mounts.

Remove left engine support arm.

Lift engine out with crane.

Fig 7: Suspending Special Tool (11 0 000) From Engine Lifter

G04754752

Installation note:

Secure special tool (1) 11 7 310 to steering box.

Fig 8: Securing Special Tool (11 7 310) With Steering Box

G06904089

Assemble engine.

Observe following in case of REPLACEMENT ENGINE .

Check function of DME.