Alternator: Service and Repair

REMOVING AND INSTALLING OR REPLACING ALTERNATOR (M60)


Interrogate fault memories of control units as disconnecting the battery will erase fault memories.

Disconnect battery ground lead.




Remove holder of vacuum hoses on fan cowl.




Remove fan.
Unscrew fan bolt using Special Tools 11 5 040 and 11 5 050.

Important! Left-hand threads.




Remove fan cowl.

Remove clips at left and right hand sides and remove cowl upwards.

Arrangement of Ribbed Drive Belt:

Installation:
Inspect ribbed drive belt for traces of coolant or oil, replacing it if necessary.





Loosen nuts (1 and 2) to loosen the ribbed drive belt.




Installation:
Install ribbed drive belt and check for correct seating on pulleys.

Preload adjusting plate up to end of slot (2) by turning hexagon (1).

Tighten nuts (3).




Unscrew nuts (1) and bolt (2).

Remove ribbed drive belt tensioner.




Loosen nuts (1 and 2) of oil filter so that oil filler can be pulled forward about 4 mm.




Unscrew alternator mounting bolts (1 and 2).




Lift car.

Unscrew engine splash guards.




Disconnect vent hose of alternator at alternator.




Unscrew lower alternator mounting bolt.




Pull alternator forward.

Unclip caps on connections.

Unscrew connections.

Installation:
Tightening Torque = D+ (7 Nm) / B+ (13 Nm)




Lower car.

Take radiator hose out of clamp (1).




Unclip radiator at left and right hand sides by pressing in retainers with a screwdriver.




Protect radiator with sheet metal plate (1) to avoid damage while removing alternator.

Unscrew water pump pulley.




Pull oil filter forward slightly.

To remove the alternator, alternator mounting tab (1) must be turned clockwise underneath oil filter mounting tab(2).

Pull alternator forward.




Remove alternator upwards.