Technical Values
| Location | Description | Type | Basic value | Tolerance 1 | Tolerance 2 |
|---|---|---|---|---|---|
| Brake booster (vacuum) | C2/C4 | Tandem/diameter | 8/9 Zoll | ||
| Brake booster transmission ratio (i) | C2/C4 | Factor | 5.5 | ||
| Diameter of brake master cylinder, front/rear | C2/C4 | Diameter | 26.99/26.99 mm | ||
| Brake master cylinder stroke, front/rear | C2/C4 | Measured value | 24/12 mm | ||
| Brake disc diameter, front | C2/C4 | Diameter | 330 mm | ||
| Brake disc diameter, rear | C2/C4 | Diameter | 330 mm | ||
| Effective brake disc diameter, front | C2/C4 | Diameter | 277.8 mm | ||
| Effective brake disc diameter, rear | C2/C4 | Diameter | 274.6 mm | ||
| Piston diameter in four-piston brake calliper, front | C2/C4 | Diameter | 4 x 38 mm | ||
| Piston diameter in four-piston brake calliper, rear | C2/C4 | Diameter | 4 x 32 mm | ||
| Effective brake pad area, front | C2/C4 | Area | 286 cm2 | ||
| Effective brake pad area, rear | C2/C4 | Area | 200 cm2 | ||
| Total brake pad area | C2/C4 | Area | 486 cm2 | ||
| Brake booster (vacuum) | C2S/C4S | Tandem/diameter | 8/9 Zoll | ||
| Brake booster transmission ratio (i) | C2S/C4S | Factor | 5.5 | ||
| Diameter of brake master cylinder, front/rear | C2S/C4S | Diameter | 26.99/26.99 mm | ||
| Brake master cylinder stroke, front/rear | C2S/C4S | Measured value | 24/12 mm | ||
| Brake disc diameter, front | C2S/C4S | Diameter | 340 mm | ||
| Brake disc diameter, rear | C2S/C4S | Diameter | 330 mm | ||
| Effective brake disc diameter, front | C2S/C4S | Diameter | 286.6 mm | ||
| Effective brake disc diameter, rear | C2S/C4S | Diameter | 274.6 mm | ||
| Piston diameter in six-piston brake calliper, front | C2S/C4S | Diameter | 2 x 34 mm | ||
| Piston diameter in six-piston brake calliper, front | C2S/C4S | Diameter | 2 x 32 mm | ||
| Piston diameter in six-piston brake calliper, front | C2S/C4S | Diameter | 2 x 30 mm | ||
| Piston diameter in four-piston brake calliper, rear | C2S/C4S | Diameter | 4 x 32 mm | ||
| Effective brake pad area, front | C2S/C4S | Area | 348 cm2 | ||
| Effective brake pad area, rear | C2S/C4S | Area | 252 cm2 | ||
| Total brake pad area | C2S/C4S | Area | 600 cm2 | ||
| Pad thickness, front | All | Measured value | approx. 12.0 mm | ||
| Pad thickness, front (wear limit) | All | Measured value | 2 mm | ||
| Pad thickness, rear | All | Measured value | approx. 12.0 mm | ||
| Pad thickness, rear (wear limit) | All | Measured value | 2 mm | ||
| Brake disc thickness, new (front) | C2/C4 | Measured value | 28 mm | ||
| Brake disc thickness, new (front) | C2S/C4S | Measured value | 34 mm | ||
| Brake disc thickness, new (rear) | All | Measured value | 28 mm | ||
| Brake disc minimum thickness after machining, front C2/C4 | Brake disc can only be reworked symmetrically, i.e. equally from both sides! | Measured value | C2/C4 = 26.6 mm | ||
| Brake disc minimum thickness after machining, front C2S/C4S | Brake disc can only be reworked symmetrically, i.e. equally from both sides! | Measured value | C2S/C4S = 32.6 mm | ||
| Brake disc minimum thickness after machining, rear, all | Brake disc can only be reworked symmetrically, i.e. equally from both sides! | Measured value | All = 26.6 mm | ||
| Brake disc wear limit, front | C2/C4 | Measured value | 26.0 mm | ||
| Brake disc wear limit, front | C2S/C4S | Measured value | 32.0 mm | ||
| Brake disc wear limit, rear | All | Measured value | 26.0 mm | ||
| Peak-to-valley surface roughness of brake disc after machining (max.) | All | Measured value | 0.006 mm | ||
| Thickness tolerance of brake discs (max.) | All | Measured value | 0.02 mm | ||
| Lateral runout of brake disc (max.) | All | Measured value | 0.03 mm | ||
| Lateral runout of wheel hub (max.) | All | Measured value | 0.03 mm | ||
| Lateral runout of brake disc when installed (max.) | All | Measured value | 0.06 mm | ||
| Push-rod play | Measured at brake pedal plate | Measured value | approx. 1 mm | ||
| Diameter of parking-brake drum | Parking brake (electrically actuated, drum brake acting on the rear axle) | Diameter | 180 mm | ||
| Diameter of parking-brake drum, wear limit | All | Diameter | 181 mm | ||
| Width of parking-brake shoe | All | Measured value | 25 mm | ||
| Thickness of parking-brake pad | All | Measured value | 4.5 mm | ||
| Thickness of parking-brake pad, wear limit | All | Measured value | 2 mm | ||
| Brake booster diameter (vacuum) | C2/C2S/C4/C4S | Tandem/diameter | 8/9 Zoll | ||
| Brake booster transmission ratio (i) | C2/C2S/C4/C4S | Factor | 5.5 | ||
| Diameter of brake master cylinder, front/rear | C2/C2S/C4/C4S | Diameter | 26.99/26.99 mm | ||
| Brake master cylinder stroke, front/rear | C2/C2S/C4/C4S | Measured value | 24.0/12.0 mm | ||
| Brake disc diameter, front | C2/C2S/C4/C4S | Diameter | 350 mm | ||
| Brake disc diameter, rear | C2/C2S/C4/C4S | Diameter | 350 mm | ||
| Effective brake disc diameter, front | C2/C2S/C4/C4S | Diameter | 286.6 mm | ||
| Effective brake disc diameter, rear | C2/C2S/C4/C4S | Diameter | 294 mm | ||
| Piston diameter in six-piston brake calliper, front | C2/C2S/C4/C4S | Diameter | 2 x 34 mm | ||
| Piston diameter in six-piston brake calliper, front | C2/C2S/C4/C4S | Diameter | 2 x 32 mm | ||
| Piston diameter in six-piston brake calliper, front | C2/C2S/C4/C4S | Diameter | 2 x 30 mm | ||
| Piston diameter in four-piston brake calliper, rear | C2/C2S/C4/C4S | Diameter | 4 x 32 mm | ||
| Effective brake pad area, front | C2/C2S/C4/C4S | Area | 424 cm2 | ||
| Effective brake pad area, rear | C2/C2S/C4/C4S | Area | 252 cm2 | ||
| Total brake pad area | C2/C2S/C4/C4S | Area | 676 cm2 | ||
| Pad thickness, front | Measured value | approx. 12.0 mm | |||
| Pad thickness, front (wear limit) | Measured value | 2 mm | |||
| Pad thickness, rear | Measured value | approx. 12.0 mm | |||
| Pad thickness, rear (wear limit) | Measured value | 2 mm | |||
| Brake disc thickness, new (front) | Measured value | 34 mm | |||
| Brake disc thickness, new (rear) | Measured value | 28 mm | |||
| Brake disc wear limit, front | Minimum brake disc thickness (wear limit) is stamped on the brake disc hub. Example: Min. Th. 33.7 mm | Measured value | mm (Read value on brake disc hub) X.XX |
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| Brake disc wear limit, rear | Minimum brake disc thickness (wear limit) is stamped on the brake disc hub. Example: Min. Th. 27.7 mm | Measured value | mm (Read value on brake disc hub) X.XX |
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| Wear limit: Surface changes in front and rear brake discs | Wear limit: Connected surface fracture > 1 cm2 and/or surface roughness of brake disc > 80 micrometer. Replace PCCB brake discs on each axle. | Surface changes | Values and procedure for: checking front 46 51 02 PCCB brake discs/checking rear 46 54 02 PCCB brake discs. | ||
| Thickness tolerance of brake discs (max.) | Measured value | 0.02 mm | |||
| Lateral runout of brake disc (max.) | Measured value | 0.03 mm | |||
| Lateral runout of wheel hub (max.) | Measured value | 0.03 mm | |||
| Lateral runout of brake disc when installed (max.) | Measured value | 0.06 mm | |||
| Push-rod play | Measured at brake pedal plate | Measured value | approx. 1 mm | ||
| Diameter of parking-brake drum | Parking brake (electrically actuated, drum brake acting on the rear axle) | Diameter | 180 mm | ||
| Diameter of parking-brake drum, wear limit | Diameter | 181 mm | |||
| Width of parking-brake shoe | Measured value | 25 mm | |||
| Thickness of parking-brake pad | Measured value | 4.5 mm | |||
| Thickness of parking-brake pad, wear limit | Measured value | 2 mm |