34 31 Brake Master Cylinder
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 535xi, 2010 BMW 535i, 2009 BMW 535xi, 2009 BMW 535i, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUES SPECIFICATION (BRAKE MASTER CYLINDER)
| Type | Thread | Tightening specification | Measure | |
|---|---|---|---|---|
| 1AZ Brake master cylinder to brake booster (vacuum) | E30 | 24 Nm | ||
| E32 | Replace self-locking nut. | 21 Nm | ||
| E28 / E34 / E36 / E46 / E38 / E39 / E52 / E53 / E85 / E86 / E83 | Replace self-locking nut. | 26 Nm | ||
| E65 / E66 / E60 / E61 / E63 / E64 | Replace self-locking nut. Retighten after 30 minutes. | 26 Nm | ||
| 2AZ Brake master cylinder to brake booster hydraulic | E31 / E32 / E34 / E24 | Replace hexagon socket head screw with a hexagon screw, refer to BMW Parts Service | 28 Nm | |
| 3AZ Expansion tank to brake master cylinder | E36 / E46 / E85 / E86 | 3.5 Nm | ||
| E83 / E60 / E61 / E63 / E64 | 8 ± 2 Nm |