1100050 Removing and installing engine (N51)

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IMPORTANT: Aluminium-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
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 tasks:

Lift engine hood into ASSEMBLY POSITION .
Remove EXHAUST SYSTEM .
Remove transmission See 2300017 REMOVING AND INSTALLING TRANSMISSION (GS6-17BG) N51/N52/N52K/N53 or 2400032 REMOVING AND INSTALLING AUTOMATIC TRANSMISSION (GA6L45R) .
Drain ENGINE OIL .
Disconnect negative battery lead.
Remove AIR CLEANER HOUSING .
Remove FAN COWL with electric fan.
Remove RADIATOR .
Remove WATER PUMP .
Remove THERMOSTAT .
Detach all coolant hoses from engine.
Remove left and right FRESH AIR DUCT .
Remove intake air MANIFOLD .
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.

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.

Fig 1: Identifying Air-Conditioning Compressor

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Fig 2: Identifying Power Steering Pump

Courtesy of BMW OF NORTH AMERICA, INC.

Screw in towing hook (1).

Suspend special tool 11 0 020 LIFTING GEAR from engine crane.

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

Lift engine out with crane.

Fig 3: Identifying Towing Hook And Mounting Eyelets And Special Tool (11 0 020)

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Fig 4: Removing Lines With Oil-Water Heat Exchanger

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME.