11 00 050 Removing and installing engine (N52K): Notes
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
color 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:
- Move engine bonnet into SERVICE POSITION
- Remove EXHAUST SYSTEM
- Remove AUTOMATIC TRANSMISSION or MANUAL TRANSMISSION
- Remove front output shafts (AWD only)
- Drain off ENGINE OIL
- Clamp off BATTERY NEGATIVE LEAD
- Remove INTAKE FILTER HOUSING
- Remove FAN COWL with electric fan
- Remove RADIATOR
- Remove WATER PUMP
- Remove COOLANT THERMOSTAT
- Detach all coolant hoses from engine
- Remove MICROFILTER HOUSING
- 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 INJECTION PIPE and place to one side
Release AIR-CONDITIONING COMPRESSOR (1) and set down on front axle carrier.
Do not disconnect A/C lines.
Do not disconnect coolant pipe from crankcase.
Release power steering pump (1) and set down on front axle carrier.
Screw towing eye (1) into cylinder head.
Tightening torque 11 12 9AZ .
Attach special tool 11 0 020 to engine crane.
Suspend special tool 11 0 020 from the designated mounting eyelets (2) only.
Lift engine out with engine crane.
Release screws (1).
Remove lines (2) with oil-water heat exchanger in direction of arrow.
Assemble engine.
Check function of DME.