1 Series E81 130i (N52K) 3-door
12 31 020
Removing and installing or replacing
alternator (N52, N52K, N51, N53)
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.
The end faces of aluminium 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 filter housing
•
Remove alternator drive belt
Unlock plug (1) and remove.
Slacken nut (2).
Installation:
Tightening torque 12 31 1AZ
.
Release screws and remove alternator (3).
Installation:
Replace aluminium screws.
Tightening torque 12 31 2AZ
.
RA Removing and installing or replacing alternator (N52, N52K, N51, N53)
BMW AG - TIS
22.01.2013 03:42
Issue status (12/2007) Valid only until next DVD is issued
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