11 37 Variable Valve Gear
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.
VARIABLE VALVE GEAR TIGHTENING SPECIFICATION
| Type | Thread | Description | Tightening Specification | |
|---|---|---|---|---|
| 1AZ Gate to cylinder head | N51 | M6x23 | 10 Nm | |
| 2AZ Return spring to cylinder head | N51 | M6x20 | 10 Nm | |
| 3AZ Electric servodrive to cylinder head | N51 | M6x16 | Observe repair instruction | 10 Nm |
| 4AZ Electric servodrive to cylinder head cover | N51 | M6x16 | Observe repair instruction | 9 Nm |
| 5AZ Oil spray nozzle to gate | N51 | M6x30 | 10 Nm | |
| 6AZ min stop of eccentric shaft to cylinder head | N51 | M6 | 10 Nm | |
| 7AZ Eccentric shaft bearing cap to cylinder head (steel screw) | N51 | M6x30.5 | Replace screws | 9 Nm |