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:
Unlock connector (1) and remove.
Unfasten nut.
Remove positive battery cable (2).
Release screw (1).
Installation note:
Replace aluminum screws.
Unfasten screws (2).
Installation note:
Replace aluminum screws.
Remove starter motor (3).
Installation note:
Check starter pinion and ring gear for damage. Replace starter motor if necessary.
Assemble engine.
Only during starter replacement and on vehicles with MSA (automatic engine start-stop function):
BMW X3 Service & Repair Manual > Front axle: Screw
Screw Minimum set: Mechanical tools AM
NOTE: (Pressure bolt) Replaced by 31 2 311 (0 495 800)
Screw Mechanical tool
NOTE:
(Hexagon screw M12x1.5x132 (4 units)) for screwing in the front axle support
when removing and installing the front axle differential
Screw AM
NOTE:
Screws K1 (M12x ...