11 53 Coolant Thermostat With Connections
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.
COOLANT THERMOSTAT WITH CONNECTIONS - TIGHTENING TORQUE
| Type | Thread | Description | Tightening Specification | |
|---|---|---|---|---|
| 1AZ Hexagon screws (2 x) Coolant thermostat to electric water pump. |
N52K | M6 x 25 | 9 Nm | |
| 2AZ ASA screws (2 x) Feed line (from electric water pump) to crankcase. |
N52K | M6 x 16 | Replace sealing ring and seal. | 9 Nm |
| 3AZ Hose clamp (1 x) Feed line (from crankcase) to electric water pump. |
N52K | L42-48 | 3 Nm | |
| 4AZ Hose clamps (2 x) Coolant hose between oil-water heat exchanger and feed line. |
N52K | L18-24 | 3 Nm | |
| 5AZ Hose clamps (2 x) Coolant hose between coolant thermostat and electric water pump. |
N52K | L42-48 | 3 Nm | |
| 6AZ Hose clamp (1 x) Coolant hose (from cylinder head) to coolant thermostat. |
N52K | L23-35 | 3 Nm | |
| 7AZ Hexagon screws (2 x) Coolant hose (from coolant thermostat) to cylinder head. |
N52K | M6 x 25 | 9 Nm | |
| 8AZ ASA screw (1 x) Spacer to cylinder head. |
N52K | M6 x 12 | 8 Nm | |
| 9AZ ASA screws (2 x) Dual bracket to crankcase. The end faces of the aluminum screw heads are painted blue. |
N52K | M6 x 16 | Replace screws. Thread repairs exclusively with aluminum Heli-coil threaded insert. Jointing torque and angle of rotation must be observed without fail. |
|
| Jointing torque | 4 Nm | |||
| Torque angle | 45 ° |