12 31 Alternator with Drive and Mounting Parts (AZ1-AZ8)
WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUES - ALTERNATOR WITH DRIVE AND MOUNTING PARTS
| 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 |