Removing and Installing Engine

11 00 050 Removing and installing engine (N54)

Special tools required:





Important!
Aluminum screws/bolts must be replaced each time they are released.
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic.
Jointing torque and angle of rotation must be observed without fail (risk of damage).





Necessary preliminary work:
^ Disconnect battery negative lead.
^ Move engine bonnet/hood into assembly position.
^ Drain engine oil.
^ Remove air cleaner housing.
^ Remove fan cowl with electric fan.
^ Remove radiator.
^ Detach all coolant hoses from engine.
^ Remove left and right fresh air duct.
^ Remove intake plenum.
^ Detach vacuum line from brake booster.
^ Unfasten ignition wiring harness and lay to one side.
^ Unfasten engine wiring harness and lay to one side.
^ Remove front left and right output shafts.
^ Remove exhaust system.
^ Remove transmission.





Evacuate air conditioning system.
Release screws (1) for A/C lines.

Disconnect plug connection (2) on air-conditioning compressor.

Do not remove air conditioning compressor.





Release bolts (1 and 2) from power steering pump bracket.

Set power steering pump down on front axle carrier.

Note:
Do not disconnect hydraulic lines.

If Dynamic Drive optional equipment is fitted, release bracket.





Disconnect fuel lines (1 and 2).

Close off fuel line (1) with special tool 13 5 281.

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





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.





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





Screw in towing hook (1).

Attach special tool 11 0 000 to engine crane.

Only suspend special tool 11 0 000 to the mounting eyes (2) provided for this purpose.

Unscrew left and right engine mounts.

Lift engine out with crane.





Assemble engine.

Observe following in case of replacement engine.

Check function of DME.