13 53 Fuel Injector Nozzles and Lines
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUE SPECIFICATION - FUEL INJECTOR NOZZLES AND LINES
| Type | Thread | Tightening specifications | Dimension | ||
|---|---|---|---|---|---|
| 1AZ | High pressure pump to vacuum pump | N55/N55 Hybrid | M6 x 25 | Continental high pressure pump | 9±1 Nm |
| M6 x 25 | Bosch high pressure pump | 12±1 Nm | |||
| 2AZ | Rail to cylinder head | N55/N55 Hybrid | M7 | 13±1 Nm | |
| 3AZ | High-pressure line to cylinder head | N55/N55 Hybrid | M7 | 13±2 Nm | |
| 4AZ | Fuel high-pressure sensor | N55/N55 Hybrid | M10 | 30-5 Nm | |
| 5AZ | Fuel low-pressure sensor | N55/N55 Hybrid | M10 | Sensata fuel low-pressure sensor | 20-3 Nm |
| M10 | Bosch fuel low-pressure sensor | 30-5 Nm | |||
| 6AZ | Hold-down device to cylinder head | N55/N55 Hybrid | M7 | 13±1 Nm | |
| 7AZ | Feed line to high pressure pump | N55/N55 Hybrid | M14 | Coat screw connection with transmission oil. | 30±3 Nm |
| 8AZ | High pressure line to rail and high pressure pump | N55/N55 Hybrid | M14 | Coat screw connection with transmission oil. | 30±3 Nm |
| 9AZ | High pressure lines to rail and injection system | N55/N55 Hybrid | M12 | Coat screw connection with transmission oil. | 23±3 Nm |
| 10AZ | Fuel delivery line | N55/N55 Hybrid | M8 | Replace screw. | |
| 1. Jointing torque | 5 Nm | ||||
| 2. Torsion angle adjustment | 90°±15° | ||||
| 11AZ | EMC plate to ignition coils and injector well | N55/N55 Hybrid | M6 | 8.5 Nm | |
| 12AZ | Screw plug in the EMC plate | N55/N55 Hybrid | 25 Nm | ||
| 13AZ | Special tool 13 0 270 or 0 496 885 on injector shaft | N55/N55 Hybrid | M6 | 8.5 Nm | |