11 27 COUNTERBALANCE SHAFTS (540i 2017-2020, 540i xDrive 2017-2020)
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11 27 DUAL-MASS BALANCE - TIGHTENING TORQUE SPECIFICATION
| Type | Thread | Tightening specifications | Dimension | |
|---|---|---|---|---|
| 1AZ Gear to counterbalance shaft | B42S20O0/B46M0/O0/B48M0/O0 | M10 | 1. Joining torque | 20 Nm |
| 2. Angle of rotation | 180° | |||
| 2AZ Idler gear to crankcase | B42S20O0/B46M0/O0/B48M0/O0 | M12 | 1. Joining torque | 10 Nm |
| 2. Angle of rotation | 45° |
11 27 TIGHTENING TORQUE OVERVIEW
| Preloading the spring balance to tighten the idler gear | ||
| Spring balance | Preload | 30-40 Nm |
| Special tool 2 288 054 to crankshaft | ||
| tightening torque | 20 Nm | |