11 12 Cylinder Head And Cylinder Head Cover
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 BMW 328xi, 2012 BMW 328i, 2011 BMW 328xi, 2011 BMW 328i, and 2010 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUE SPECIFICATIONS - CYLINDER HEAD WITH CYLINDER HEAD COVER
| Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|
| 1AZ ISA screws (cylinder head bolts) Cylinder head to crankcase. |
N52K | M10 x 125 | Replace screws. Tighten screws from inside outwards. Joining torque and angle of rotation must be observed without fail. Jointing torque
|
30 Nm 90 ° 90 ° 45 ° |
| 2AZ ISA screws (cylinder head bolts) Cylinder head to crankcase. |
N52K | M9 | Replace screws. Joining torque and angle of rotation must be observed without fail. Jointing torque
|
30 Nm 90 ° omitted 45 ° |
| 3AZ Al screw Cylinder head to crankcase. Aluminium screws/bolts are permitted with and without color coding (blue). |
N52K | M9 x 30 | Replace screw. Thread repairs exclusively with aluminium Helicoil threaded insert. Joining torque and angle of rotation must be observed without fail. Jointing torque Torque angle |
10 Nm 90 ° |
| 4AZ ASA screws Cylinder head to crankcase. Aluminium screws/bolts are permitted with and without color coding (blue). |
N52K | M9 x 70 | Replace screws. Thread repairs exclusively with aluminium Helicoil threaded insert. Joining torque and angle of rotation must be observed without fail. Jointing torque Torque angle |
10 Nm 135 ° |
| 5AZ ASA screws Cylinder head cover to cylinder head. |
N52K | M7 | 9 Nm | |
| 6AZ Fillister head screws Ignition coil cover to cylinder head cover. |
N52K | M6 x 20 | 4 Nm | |
| 7AZ ISA screws Bearing cap of eccentric shaft to cylinder head. |
N52K | M6 x 30.5 | 9 Nm | |
| 8AZ Seal plugs Coolant duct in cylinder head. |
N52K | M16 x 1.5 | Thread must be oiled. | 40 Nm |
| 9AZ Towing eye Towing eye to cylinder head. |
N52K | M16 | Use towing eye exclusively with M16 thread. Use towing eye for engine transportation only. |
30 Nm |
TIGHTENING TORQUE SPECIFICATIONS - CYLINDER HEAD WITH COVER
| Type | thread | tightening specification | Measure | |
|---|---|---|---|---|
| 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 |