420 & XKE

Brake system utilizes four wheel disc brakes. Master cylinder is combined with a booster reaction valve, actuating a tandem piston slave cylinder connected to a booster servo. Each cylinder employs a separate hydraulic fluid reservoir. Master cylinder is actuated by pedal linkage and slave cylinder is operated by servo. Slave cylinder contains two separate hydraulic circuits actuating front and rear brake calipers. Front calipers, mounted on steering arms, consist of three pistons (two outboard, one inboard). Rear calipers, mounted on differential housing, consist of two opposing pistons, and operate on rotors connected to differential output flanges. Parking brake consists of two separate lever operated calipers mounted on service brake calipers. Parking brake calipers operate on service brake rotors.