BENDIX/DELCO-Moraine Dual Piston Master Cylinder: Description

Bendix and Delco-Moraine tandem dual piston master cylinders are single casting type with front and rear pistons and a separate reservoir and outlet for each piston. Rear piston is operated by push rod connected to brake pedal. Front piston is operated by rear piston. In a combination disc and drum system, reservoir which feeds disc brakes is larger to compensate for larger displacement of disc caliper cylinder.

Master cylinders for General Motors and some Jeep vehicles incorporate a quick take-up feature, that delivers a large volume of fluid at low pressure upon initial application of brakes. This fluid quickly displaces the retracted caliper, placing brake linings in contact with brake rotors and drums.