11 53 THERMOSTAT AND ENGINE-MOUNTED COOLANT LINES (540i 2017-2020, 540i xDrive 2017-2020)
11 53 THERMOSTAT AND COOLANT LINES - TIGHTENING TORQUE SPECIFICATION
| Type | Thread | Tightening specifications | Dimension | |
|---|---|---|---|---|
| 1AZ Coolant line to exhaust turbocharger | B42S20O0/B46M0/O0/B48M0/O0 | M6 | Tightening torque Replace O-ring. |
10 Nm |
| 2AZ Coolant line to crankcase | B42S20O0/B46M0/O0/B48M0/O0 | M6 | Tightening torque Replace O-ring. |
10 Nm |
| 3AZ Heat exchange module to crankcase | B42S20O0/B46M0/O0/B48M0/O0 | M6 | Tightening torque | 8 Nm |
| 4AZ Coolant return line to exhaust turbocharger | B42S20O0/B46M0/O0/B48M0/O0 | M6x12 | Tightening torque | 8 Nm |
| 5AZ Connecting bracket to engine block | B42S20O0/B46M0/O0/B48M0/O0 | M6x25 | Tightening torque | 8 Nm |
11 53 TIGHTENING TORQUE OVERVIEW
| Coolant return line holder to exhaust turbocharger | ||
| M6 x 12 | Tightening torque | 8 Nm |