12 31 020 Removing and installing or replacing alternator (N63)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Turn off ignition
Disconnect BATTERY NEGATIVE LEAD
Remove acoustic cover. See 13..... REMOVING ACOUSTIC COVERS (N63) .
Remove INTAKE FILTER HOUSING
Remove FAN COWL with electric fan
Remove alternator DRIVE BELT
Remove intercooler EXPANSION TANK .
Remove FUEL FEED LINE

IMPORTANT: Risk of damage!
Cover radiator.

Release clamps (1) and (2).

Replace clamps (2).

Detach both charge-air ducts (3) and remove.

Check gaskets on turbocharger, replacing if necessary.

Fig 1: Identifying Charge-Air Ducts And Clamps

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Picture shows the left side, the procedure for the right side is identical.

Detach hoses (1) from clean-air pipe.

Release screw (2).

Tightening torque: 13 71 1AZ .

Detach clean-air pipe (3) in direction of travel from turbocharger.

Check seals on clean-air pipe, replacing if necessary.

Fig 2: Identifying Clean-Air Pipe, Hoses And Screw

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Pull off cable duct (1) from cable holder (2) in upward direction.

Release cable (3) from holder.

Fig 3: Pulling Off Cable Duct From Cable Holder

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Pull off plug (1).

Detach cover (2) and release nut underneath.

Tightening torque: 12 42 1AZ .

Installation:

Reinstall cover (2) without fail risk of short circuiting!

Disconnect battery positive lead (3) from alternator.

Remove FUEL FEED LINE (4).

Fig 4: Identifying Battery Positive Lead From Alternator & Fuel Feed Line

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Release screws (1) on turbocharger coolant pump (2).

Fig 5: Identifying Turbocharger Coolant Pump & Screws

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Picture shows the left side, the procedure for the right side is identical.

Release screws (1).

Tightening torque: 12 31 1AZ .

Fig 6: Identifying Alternator Screws

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Remove alternator (1) together with bracket (2) in direction of travel.

Fig 7: Removing Alternator And Bracket

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NOTE: Check stored fault message.
Reassemble the vehicle.
Delete fault memory.