34 00 Testing and bleeding brakes
| Brake fluid: refer to BRAKES - OPERATING FLUIDS . | ||
|---|---|---|
| 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 | 34 |
| Max. pressure drop within 2 min. | % | 8 |
| Brake booster function test (with engine running) | 70-100 | |
| Approx. force on pedal | Approx. N | 200 |
| Line pressure | Bar |
TESTING AND BLEEDING BRAKES - SPECIFICATIONS
34 11 Front Brake
| Attention! New brake pads may only be installed if the brake disc thickness is greater than or equal to the minimum brake disc thickness (MIN TH) (not including M vehicles). In case of M vehicle and perforated brake discs new brake pads may only be installed if the brake disc thickness is greater than the minimum brake disc thickness (MIN TH). Minimum brake disc thickness during general inspection (GI): Nominal size thickness minus 2.4 mm (Not applicable to perforated brake discs and M vehicles) M vehicles and perforated brake discs: Nominal size thickness minus 1.6 mm Depending on: Engine type Transmission version Equipment specification (e.g. maximum load increase, chassis official-use, national version, etc.) different brake discs can be fitted The brake discs must always be assigned by way of the relevant vehicle identification number and the Electronic Parts Catalogue (ETK)! | ||
|---|---|---|
| Different thicknesses on brake linings | Max. mm | 0.01 |
| Max. machining limit per friction ring side (M vehicles and perforated brake discs must not be machined). Brake disc minimum thickness (MIN TH) must not be undershot. | Mm | 0.8 |
| Nominal size (diameter x thickness) | Mm | 360x30 |
| Nominal size (diameter x thickness) | Mm | 348x30 |
| Brake disc minimum thickness (MIN TH) stamped on brake disc body | Mm | 28.4 |
| Nominal size (diameter x thickness) | Mm | 338x26 |
| Brake disc minimum thickness (MIN TH) stamped on brake disc body | Mm | 24.4 |
| Nominal size (diameter x thickness) | Mm | 330x24 |
| Nominal size (diameter x thickness) | Mm | 312x24 |
| Nominal size (diameter x thickness) | Mm | 300x24 |
| Brake disc minimum thickness (MIN TH) stamped on brake disc body | Mm | 22.4 |
| Wear warning from residual lining thickness | Mm | 3.7 |
FRONT BRAKE - SPECIFICATIONS
34 21 Rear Brake Discs
| Attention! New brake pads may only be installed if the brake disc thickness is greater than or equal to the minimum brake disc thickness (MIN TH) (not including M vehicles). In case of M vehicle and perforated brake discs new brake pads may only be installed if the brake disc thickness is greater than the minimum brake disc thickness (MIN TH). Minimum brake disc thickness during general inspection (GI): Nominal size thickness minus 2.4 mm (Not applicable to perforated brake discs and M vehicles) M vehicles and perforated brake discs: Nominal size thickness minus 1.6 mm Depending on: Engine type Transmission version Equipment specification (e.g. maximum load increase, chassis official-use, national version, etc.) different brake discs can be fitted The brake discs must always be assigned by way of the relevant vehicle identification number and the Electronic Parts Catalogue (ETK)! | ||
|---|---|---|
| Different thicknesses on brake linings | Max. mm | 0.01 |
| Max. machining limit per friction ring side (M vehicles and perforated brake discs must not be machined). Brake disc minimum thickness (MIN TH) must not be undershot. | Mm | 0.8 |
| Nominal size (diameter x thickness) | Mm | 350x24 |
| Brake disc minimum thickness (MIN TH) stamped on brake disc body | Mm | 22.4 |
| Nominal size (diameter x thickness) | Mm | 336x22 |
| Nominal size (diameter x thickness) | Mm | 324x22 |
| Brake disc minimum thickness (MIN TH) stamped on brake disc body | Mm | 20.4 |
| Nominal size (diameter x thickness) | Mm | 300x20 |
| Brake disc minimum thickness (MIN TH) stamped on brake disc body | Mm | 18.4 |
| Nominal size (diameter x thickness) | Mm | 296x10 |
| Brake disc minimum thickness (MIN TH) stamped on brake disc body | Mm | 8.4 |
| Wear warning from residual lining thickness | Mm | 3.7 |
REAR BRAKE DISCS - SPECIFICATIONS
34 41 Parking Brake
| Handbrake drum diameter M3 | Mm | 185 |
|---|---|---|
| Minimum lining thickness | Mm | 1.5 |
PARKING BRAKE - SPECIFICATIONS
See also:
• BRAKES - OPERATING FLUIDS