12 31 Alternator with Drive and Mounting Parts
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 BMW 335xi, 2010 BMW 335i, 2009 BMW 335xi, 2009 BMW 335i, and 2008 BMW 335xi. However, it is still accessible from the selected car via links, so may be relevant.
ALTERNATOR TIGHTENING SPECIFICATION
| - | Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|---|
| 1AZ | Wires to alternator | - | - | - | - |
| Terminal D+ | M10/M20 | - | - | 5 Nm | |
| - | All / others | M6 | - | 7 Nm | |
| Terminal B+ | S38/B38 | - | - | 8 Nm | |
| - | All / others | M8 | - | 13 Nm | |
| 2AZ | Pulley | All | - | - | 45 Nm |
| 3AZ | Pulley (ribbed drive belt) | Alternator with cooling jacket | - | - | 80 Nm |
| - | all others | - | - | 70 Nm | |
| - | N42, N46 Valeo | - | - | 75 Nm | |
| - | N42, N46 Bosch | - | - | 65 Nm | |
| 4AZ | Rear holder | All | - | - | 3.5 Nm |
| 5AZ | Fillister head screw for wire holder | All | - | - | 3.5 Nm |
| 6AZ | Alternator on bearing block | M40/M42/M43/M44 | - | - | 43 Nm |
| 7AZ | Alternator to crankcase | N42, N46, N62 | M8 | - | 21 Nm |
| 8AZ | Belt pulley (ribbed V-belt) with freewheel (Ina) fitted to Bosch and Valeo alternators | N42, N43 | - | - | 80 Nm |