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Home >> Pontiac >> 1987 >> 6000 STE >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc & Drum - Except STE >> Description & Operation >> Disc Brakes

Disc Brakes

Caliper is a single casting with 1 large piston inboard of disc rotor. It is mounted on the steering knuckle or a support bracket attached to front suspension. Brake rotors are cast iron with most models having ventilation fins separating the 2 braking surfaces. Some models use a groove machined in the braking surfaces to help control brake noise.

Disc brake pads are stamped steel with riveted linings. Most models use a wear sensor, a piece of spring steel riveted to the rear edge of inner or outer brake shoe. The sensor produces a high pitched squeal when lining needs replacement.