General information | |
Brake system | With double diagonal circuit separation, with disc brakes on all wheels |
Pressure in brake lines, atm | |
| 28 ÷ 33 |
| 75 ÷ 90 |
Maximum allowable pressure drop for 2 minutes | 8% |
Maximum allowable thickness difference | 0.01 |
Roughness (Ra) working surfaces of brake discs and parking brake drum, µm | 0.5 ÷ 3.5 |
The thickness of the brake pads when the warning about their wear is turned on, mm | 3.0 |
Minimum parking brake lining thickness, mm | 1.5 |
Parking brake drum diameter, mm | 180 |
Radial runout of the working surface of the parking brake drum, mm | 0.1 |
Front wheel brakes | |
Brake disc outer diameter, mm | |
Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL | 316 |
Models 740i/iL | 324 |
Models 740d, 750i/iL | 334 |
Minimum thickness of brake discs, mm | |
Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL | 26.4 |
Models 740i/iL | 28.4 |
Models 740d, 750i/iL | 30.4 |
Rear wheel brakes | |
Axial runout of the working surface of the brake disc (at the largest diameter), mm | |
With disk installed | 0.2 |
When the disc is removed | 0.04 |
Brake disc outer diameter, mm | |
Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL, 740i/iL | 324 |
Models 740d, 750i/iL | 328 |
Minimum thickness of brake discs, mm | |
Models 725tds, 728i/iL, 730d, 730i/iL, 735i/iL, 740i/iL | 10.4 |
Models 740d, 750i/iL | 18.4 |
Tightening force of threaded connections, Nm | |
Brake drum/disc to wheel hub | 16 |
Caliper (front) to the steering knuckle | 110 |
Caliper (rear) to trailing arm/wheel bearing support | 67 |
Caliper guide pin | 30 |
Wheel brake cylinder to rear wheel brake shoe guide | 10 |
Rear brake shoe guide to trailing arm/wheel bearing carrier | 65 |
Brake pipe and hose couplings | 18 |
Brake hose to caliper | 19 |
GTZ to vacuum brake booster | 26 |
ABS control unit to hydraulic modulator | 3 |
Pressure sensor to hydraulic modulator | 20 |
Wheel sensor to swivel/wheel bearing support | 9 |
Lateral acceleration sensor to body | 8.6 |