34 31 Brake Master Cylinder
WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.
BRAKE MASTER CYLINDER - TIGHTENING TORQUE SPECIFICATION
| 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 | 28 Nm | |
| 3AZ Expansion tank to brake master cylinder | E36 / E46 / E85 / E86 | 3.5 Nm | ||
| E83 / E60 / E61 / E63 / E64 | 8 ±2 Nm |