Parking Brake System: Description and Operation

Drum In Hat Braking Disc:

The parking brake mechanism on vehicles equipped with rear disc brakes, consists of a small duo-servo brake which is mounted to the disc brake caliper adapter. The hat (center) section of the rear rotor serves as the braking surface (drum) for the parking brakes.
The parking brake shoes are mechanically operated by an internal lever connected to a flexible steel cable. The wheel brake (rear) cables are joined at an equalizer which is attached to the intermediate cable. The intermediate cable is attached to the front cable leading to the foot lever.