11 12 Cylinder Head And Cylinder Head Cover
WARNING: This page is about a different car, the 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUE SPECIFICATION - 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 | ||
TIGHTENING TORQUE SPECIFICATION - 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 |
| 1. Angle of rotation | 90 ° | ||||
| 2. Angle of rotation | 90 ° | ||||
| 3. Angle of rotation | 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 |
| 1. Angle of rotation | 90 ° | ||||
| 2. Angle of rotation | omitted | ||||
| 3. Angle of rotation | 45 ° | ||||
| 3AZ | Al screw Cylinder head to crankcase. Aluminium screws/bolts are permitted with and without colour 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 |
10 Nm |
| Torque angle | 90 ° | ||||
| 4AZ | ASA screws Cylinder head to crankcase. Aluminium screws/bolts are permitted with and without colour 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 |
10 Nm |
| Torque angle | 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 |