34 00 Testing and bleeding brakes E85
| Brake fluid, refer to Operating Fluids Specifications. See OPERATING FLUIDS - BRAKES . | ||
|---|---|---|
| Leak test with engine stopped: if applicable discharge vacuum reservoir by operating brake pedal firmly about 10 times | ||
| Approx. force on pedal | Approx. N | 500 |
| Equals approx. line pressure | Approx. bar | 36 |
| Max. pressure drop within 2 min. | % | 8 |
| Brake booster function test (with engine running) | ||
| Approx. force on pedal | Approx. N | 200 |
| Line pressure | Bar | |
TESTING AND BLEEDING BRAKES SPECIFICATION
34 11 Front brake E85
| Different thicknesses on brake linings | Max. mm | 0.01 |
|---|---|---|
| Surface roughness of braking surfaces (precision -turned) | Ra MUE | 0.5... 3.5 |
| Brake disc diameter | Mm | Z4 2.2: 286 Z4 2.5: 286 Z4 3.0: 300 |
| Wear warning from residual lining thickness | Mm | 3.0 |
| Brake disk minimum thickness (MIN TH) stamped on brake disk body | Mm | Z4 2.2: 20.4 Z4 2.5: 20.4 Z4 3.0: 20.4 |
| Max. machining limit per friction ring side (M models must not be machined!) | Mm | 0.8 |
FRONT BRAKE SPECIFICATION
34 21 Rear brake DiscsE85
| Different thicknesses on brake linings | Max. mm | 0.01 |
|---|---|---|
| Surface roughness of braking surfaces (precision -turned) | Ra MUE | 0.5... 3.5 |
| Brake disc diameter | Mm | Z4 2.2: 280 Z4 2.5: 280 Z4 3.0: 294 |
| Wear warning from residual lining thickness | Mm | 3.0 |
| Brake disk minimum thickness (MIN TH) stamped on brake disk body | Mm | Z4 2.2: 8.4 Z4 2.5: 8.4 Z4 3.0: 17.4 |
| Max. machining limit per friction ring side (M models must not be machined!) | Mm | 0.8 |
REAR BRAKES SPECIFICATION
34 41 Parking Brake E85
| Handbrake drum diameter | Mm | 160 |
|---|---|---|
| Surface roughness of braking surfaces (precision - turned) | Ra MUE | 0.5... 3.5 |
| Minimum lining thickness | Mm | 1.5 |
PARKING BRAKE SPECIFICATION
See also:
• OPERATING FLUIDS - BRAKES