Cayman (987) F6-2.9L (2009)
Information on machining cast-iron brake discs
Possible complaints
^
Damage due to lack of use (rusting). This causes vibrations in the steering wheel, noises and brake pedal pulsation.
^
Brake disc becomes distorted as a result of serious driving, e.g. on a racing circuit.
^
Too much lateral runout when new brake discs are fitted on dirty or distorted wheel hubs.
Procedure
^
Check brake disc for cracks, minimum thickness, lateral runout, thickness tolerance, flatness and surface roughness.
^
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.
^
The brake disc must only be reworked symmetrically, i.e. equally from both sides! Observe the operating instructions for the disc brake dressing