Removing and Installing Engine
11 00 050 Removing and installing engine (N52K)
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:
* 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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