11 53 Coolant thermostat with connections
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUES - COOLANT THERMOSTAT WITH CONNECTIONS [N51]
| Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|
| 1AZ Thermostat housing to water pump | N52K | M6 x 25 | 8 Nm | |
| 2AZ Feed lines to crankcase | N51 | M6 x 20 | 9 Nm | |
| 3AZ Feed line to water pump | N51 | L42-48 | Hose clamp | 3 Nm |
| 4AZ Coolant hose to cylinder head | N51 | M6x23 | 9 Nm | |
| 5AZ Bracket, coolant hoses, to crankcase | N51 | M6 x 16 | Replace screws Thread repairs exclusively with Al Helicoil. Jointing torque and angle of rotation must be observed without fail. |
8 Nm |
| Jointing torque | 4 Nm | |||
| Torque angle | 45 ° | |||
| 6AZ Hose between thermostat and water pump | N51 | L42-48 | Hose clamp | 3 Nm |
| 7AZ Bypass hose to thermostat Hexagon screws (2 x) | N521 | M6 x 25 | Hose clamp | 3 Nm |
| 8AZ Bracket, coolant hoses, to cylinder head | N51 | M6 x 12 | 8 Nm |
TIGHTENING TORQUES - COOLANT THERMOSTAT WITH CONNECTIONS [N52K]
| Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|
| 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 aluminium screw heads are painted blue. |
N52K | M6 x 16 | Replace screws. Thread repairs exclusively with aluminium Helicoil threaded insert. Jointing torque and angle of rotation must be observed without fail. |
|
| Jointing torque | 4 Nm | |||
| Torque angle | 45 ° |