12 41 020 Removing and installing/replacing starter (N52, N52K, N51, N53, N54)
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IMPORTANT:
Aluminium-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.
The end faces of aluminum screws/bolts are painted blue for the purposes of reliable identification.
Jointing torque and angle of rotation must be observed without fail (risk of damage).
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.
The end faces of aluminum screws/bolts are painted blue for the purposes of reliable identification.
Jointing torque and angle of rotation must be observed without fail (risk of damage).
Necessary preliminary tasks:
- Switch off ignition
- Disconnect battery negative lead
- Remove INTAKE AIR MANIFOLD
Unlock plug (1) and remove. Unfasten nut.
Tightening torque 12 41 3AZ .
Remove battery positive lead (2).
Release screw (1).
Installation:
Replace aluminum screws.
Tightening torque 12 41 1AZ .
Release screws (2).
Installation:
Replace aluminum screws.
Tightening torque 12 41 2AZ .
Remove starter motor (3).
Installation:
Check starter pinion and ring gear for damage, replace starter motor if necessary.
N53 only: In the case of a separate term. 50 lead (with disconnector socket), the term. 50 lead is laid parallel to knock sensor 2 behind the fuel line.