BMW Marine N54 Top Mount Single Precision Turbo Kit
REMOVING AND INSTALLING OR REPLACING ALTERNATOR (N54, N54T, N55)[REP-REP-RAE9212N54-1231020 – V.7]
Repair instruction
Removing and installing or replacing alternator (N54, N54T, N55)
12 31 020 REP-REP-RAES9212N54-1231020-V.7
1231 020 Removing and installing or replacing alternator (N54, N54T, N55)
Necessary preliminary tasks
- Switch off the ignition.
- Disconnect battery negative lead.
- Remove charge air duct.
- Remove the alternator drive belt.
Note: In order to remove the alternator, it is necessary to remove the air-conditioning compressor for the air conditioning system.
In so doing
- Do not draw off air conditioning refrigerant.
- Do not detach refrigerant lines from A/C compressor.
- Do not remove A/C compressor; instead, remove from bracket only and place to one side.
- Remove A/C compressor from bracket.
Note: For purposes of improved clarity, illustrations and description show A/C compressor removed.
- Release bolts a few turns until bracket () is loose. not remove bracket (1).
- Tightening torque 64 52 5AZ.
- Unlock connector (1) and remove.
- Remove protective cap and release nut underneath.
Tightening torque
|
12 42 1AZ |
Type |
Thread |
Tightening specifications |
Dimension |
| 1AZ Alternator
cable to alternator |
N54 / N54T
/ N55 |
M8 |
19
Nm |
- Remove the positive battery cable (2).
- Release screws.
- Remove bracket (1) and alternator (2).
Tightening torque
|
12 31 1AZ |
Type |
Thread |
Tightening specifications |
Dimension |
| 1AZ Alternator to
crankcase, top |
N54 / N54T
/ N55 |
M8 x 85 | 19
Nm |
- Assemble engine.
Documents / Resources
 |
BMW Marine N54 Top Mount Single Precision Turbo Kit [pdf] Instructions N54 Top Mount Single Precision Turbo Kit, Single Precision Turbo Kit, Precision Turbo Kit, Precision Turbo, Turbo Kit |
