Removing and Installing Engine
11 00 050 Removing and installing engine (N52K)Special tools required:
Important!
Aluminum-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:
^ Move engine bonnet into service position
^ Remove exhaust system
^ Remove 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.
Note:
E60/E61 only.
Important!
A/C lines are pressurized.
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.
Note:
Do not disconnect hydraulic lines.
Note:
For vehicles with optional equipment SA229 (Dynamic Drive), bracket must be released.
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.
Note:
For vehicles with optional equipment SA205 (automatic transmission), engine must be raised approx. 10 cm.
Release screws (1).
Remove lines (2) with oil-water heat exchanger in direction of arrow.
Assemble engine.
Check function of DME.
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