911 Carrera Cabriolet (997) F6-3.6L (2007)
Information on machining cast-iron brake discs
Possible complaints
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Damage due to lack of use (rusting). This causes vibrations in the steering wheel, noises and brake pedal pulsation.
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Brake disc becomes distorted as a result of serious driving, e.g. on a racing circuit.
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Too much lateral runout when new brake discs are fitted on dirty or distorted wheel hubs.
Procedure
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Check brake disc for cracks, minimum thickness, lateral runout, thickness tolerance, flatness and surface roughness.
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If necessary, (depending on the actual brake disc thickness and the brake disc wear limit) machine the brake disc using one of the disc brake
dressing machines approved by Porsche. For a list of recommended disc brake dressing machines, see Workshop Equipment Manual, Chapter 3.4.
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The brake disc must only be reworked symmetrically, i.e. equally from both sides! Observe the operating instructions for the disc brake dressing
machine!
Technical data for C2/C2S and C4/C4S - PCCB brakes (option)
Operating brake (foot brake):
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Dual-circuit brake system with brake-circuit division per axle.
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Internally ventilated and perforated PCCB brake discs on front and rear axle.
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Six-piston monobloc calliper on front axle and four-piston monobloc calliper on rear axle.
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The brake callipers are painted yellow for visual differentiation.
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Standard Porsche Stability Management (PSM 8.0).