Principles Of Operation

Parking Brake

Principles of Operation

Parking Brake System

The parking brake actuator is a spring-loaded, self-adjusting, foot-operated control. When the parking brake control is pressed once, tension is applied to the front parking brake cable. Pressing the pedal a second time releases the tension. This tension pulls on the RH rear parking brake cable. At the same time, the tension in the front cable causes the RH cable conduit to attempt to straighten out, causing tension that pulls the LH rear cable. Both cables are attached to their respective rear parking brake levers, applying the rear brake calipers. These levers actuate a mechanical corkscrew device inside the caliper piston. When the parking brake cable pulls on the lever, this corkscrew device pushes the piston against the pads. Normal brake pad wear allows the caliper piston to move outward from the caliper housing. This action maintains proper park brake adjustment.