12 31 020 Removing and installing/replacing alternator (N47 D16/20 K/U/O/T 1)

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Necessary preliminary tasks:

Read out the fault memory of the DDE control unit.
Switch off ignition.
Disconnect BATTERY NEGATIVE LEAD .
Remove DRIVE BELT FOR ALTERNATOR .
Remove THROTTLE BODY .
Remove INTAKE PLENUM .

Release connector (1) and remove.

Slacken nut (2).

Tightening torque 12 52 2AZ .

Disconnect positive battery cable from alternator.

Fig 1: Identifying Alternator Connector And Nut

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Slacken nut (1).

Remove cover from deflecting element and undo bolt (1) beneath it.

Tightening torque 12 31 2AZ .

Remove deflecting element.

Fig 2: Identifying Deflecting Element And Undo Bolt

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Release screws (1).

Tightening torque 12 31 1AZ .

Feed out alternator upwards and remove.

Fig 3: Identifying Alternator Screws

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NOTE: Check stored fault messages.
Clear diagnostic fault entries from fault memory.