34 21 Rear Brake
REAR BRAKE DISCS SPECIFICATION
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IMPORTANT:
New brake pads may only be fitted 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) Perforated brake discs: Nominal size thickness minus 1.6 mm Depending on:
different brake discs can be fitted The brake discs must always be assigned by way of the relevant vehicle identification number. |
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| Different thicknesses on brake linings | Max. mm | 0.01 |
| Surface roughness of braking surfaces (precision-turned) | Ra μ | 0.5... 3.5 |
| Max. machining dimension per friction ring side (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 | 280x10 |
| Nominal size (diameter x thickness) | mm | 259x10 |
| Brake disk minimum thickness (MIN TH) stamped on brake disk body | mm | 8.4 |
| Wear warning from residual lining thickness | mm | 3.7 |