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
- Remove transmission
- 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.
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.