BENDIX/DELCO-Moraine Tandem Dual Piston Master Cylinder: Description

NOTE: For other single and dual piston cylinders used, see Brake Systems Index.

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 drum and disc brake system, reservoir which feeds disc brakes is larger to correspond with larger size of disc brake caliper cylinder. Master cylinder outlet which feeds drum brakes has a residual valve under tube seat. Disc brake outlet has no valve, since disc brakes must not have any residual pressure.

NOTE: Master cylinder used with 4-wheel drum brakes has residual valves and springs in both brake line outlets.

Failure in either front or rear system does not result in failure of entire system.