12 31 Alternator with Drive and Mounting Parts
WARNING: This page is about a different car, the 2005 BMW Z4, 2004 BMW Z4, and 2003 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.
12 31 ALTERNATOR WITH DRIVE AND MOUNTING PARTS TIGHTENING SPECIFICATION
| Application | Type | Thread | 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 | 80 Nm |