12 31 020 Removing and Installing or Replacing Alternator (N54)
Necessary preliminary tasks:
- Switch off ignition
- Disconnect battery negative lead and cover (See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD and/or 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD )
- Remove charge-air duct
- Remove alternator drive belt
NOTE:
In order to remove the alternator, it is necessary to remove
the A/C compressor.
In so doing:
- Do not draw off A/C system refrigerant.
- Do not detach refrigerant lines from compressor.
- Do not remove compressor; instead, remove from bracket only and place to one side.
Remove compressor from bracket.
NOTE:
For purposes of improved clarity, illustrations and description show compressor removed.
Release bolts a few turns until bracket (1) is loose. Do not remove bracket (1).
Tightening torque 64 52 5AZ. See HEATING AND AIR CONDITIONING - TIGHTENING TORQUES - COUPE or HEATING AND AIR CONDITIONING - TIGHTENING TORQUES - SEDAN .
Unlock plug (1) and remove.
Remove protective cap and release nut underneath.
Tightening torque 12 42 1AZ, see ENGINE ELECTRICAL SYSTEM -- TORQUE SPECIFICATIONS -- TWIN TURBO
Disconnect line (2).
Unfasten screws.
Remove bracket (1) and alternator (2).
Tightening torque 12 31 1AZ, see ENGINE ELECTRICAL SYSTEM -- TORQUE SPECIFICATIONS -- TWIN TURBO .