Removing and Installing Engine

11 00 050 - Removing and installing engine (N51)





Special tools required:
- 11 0 020





Important!
Aluminium-magnesium materials.

No steel screws/bolts may be used due to the threat of electrochemical corrosion.

A magnesium crankcase requires aluminium screws/bolts exclusively.

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:
- Lift engine hood into assembly position .
- Remove exhaust system Service and Repair.
- Remove transmission.
- Drain engine oil Engine Oil Service
- Disconnect negative battery lead.
- Remove air cleaner housing Service and Repair.
- Remove fan cowl Service and Repair with electric fan.
- Remove radiator Removing and Installing Radiator.
- Remove water pump Service and Repair.
- Remove thermostat Service and Repair.
- Detach all coolant hoses from engine.
- Remove left and right fresh air duct .
- Remove intake air manifold Service and Repair.
- 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 fuel injector rail and place to one side Service and Repair





Release air-conditioning compressor(1) and set down on front axle carrier.

Important!
A/C lines are pressurized.

Do not disconnect A/C lines.

Do not disconnect coolant pipe from crankcase.

Note:
Illustrations show E60.





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

Note:
Do not disconnect hydraulic lines.

If Dynamic Drive optional equipment is fitted, release bracket.





Screw in towing hook (1).

Suspend special tool 11 0 020 from engine crane.

Suspend special tool 11 0 020 from the designated mounting eyelets (2) only.

Lift engine out with crane.





Note:
If automatic transmission optional equipment is fitted: Raise engine approx. 10 cm.

Release screws (1).

Remove lines (2) with oil-water heat exchanger in direction of arrow.





Assemble engine.

Check function of DME.