11 12 Cylinder Head And Cylinder Head Cover
WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.
CYLINDER HEAD AND CYLINDER HEAD COVER SPECIFICATIONS
| Type | thread | Tightening Specification | |
|---|---|---|---|
| 11AZ Cylinder head cover | All | M6 | 10 Nm |
| All | M7 | 15 Nm | |
| M21 | M8 | 15 Nm | |
| 12AZ Oil trap to cylinder head cover | M21 | M8 | 17 Nm |
| 13AZ Timing case to cylinder head | All | M7 | 15 Nm |
| All | M8 | 20 Nm | |
| 14AZ Plug for oil channel (microencapsulated) | M47/M57 | M12 x 1.5 | 20 Nm |
| 15AZ Vent plugs to cylinder head (coolant) | M67 | 2 Nm |
CYLINDER HEAD AND CYLINDER HEAD COVER SPECIFICATIONS
| Type | Thread | Description | Tightening Specification | |
|---|---|---|---|---|
| 1AZ Cylinder head bolt | N54 | M11 x 135 | Replace screws. | |
| Jointing torque | 30 Nm | |||
| 1st angle of rotation | 90° | |||
| 2. Angle of rotation | 90° | |||
| 3. Angle of rotation | 45° | |||
| 2AZ Cylinder head bolt | N54 | M9 x 95 M9 x 125 |
Replace screws. | |
| Jointing torque | 30 Nm | |||
| 1st angle of rotation | 90° | |||
| 2. Angle of rotation | omitted | |||
| 3. Angle of rotation | 45° | |||
| 3AZ Cylinder head bolt | N54 | M9 x 30 M9 x 70 |
22 Nm | |
| 4AZ Cylinder head cover to cylinder head. | N54 | M6 | 8.5 Nm | |
| 5AZ Metal bracket to cylinder head. | N54 | M6 x 16 | 8 Nm | |
| 6AZ Lifting eye to cylinder head. | N54 | M8 x 20 | 19 Nm | |
| 7AZ Ignition coil cover to cylinder head cover. | N54 | M6 x 20 | 4 Nm | |
| 8AZ Hexagon screw (2 x) Metal bracket for ignition coil cover to cylinder head cover. |
N54 | M6 x 12 | 4 Nm |