VEHICLES HAVE A PRIMARY AND A RESERVE BRAKING SYSTEM. IF THE PRIMARY BRAKE SYSTEM BOOSTER FAILS, UNDER SOME CIRCUMSTANCES THE RESERVE SYSTEM MAY ALSO MALFUNCTION AND BRAKING ABILITY WILL BE IMPAIRED.
UNWANTED AIR IS BEING DRAWN INTO THE BRAKE SYSTEM WHEN BRAKE PEDAL IS RELEASED. THIS IS DUE TO THE USE OF THE BENDIX MASTER CYLINDER IN COMBINATION WITH THE BENDIX HYDROVAC.