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First, you need nothing to bleed that booster system, you turn the steering wheel from one side to other and add oil as it goe down.
POWER BRAKE BOOSTER - BENDIX HYDRO-BOOST
Selected Block
1993 Chevrolet Van P30
RESERVE SYSTEM
System consists of charging valve, accumulator valve and spring-loaded accumulator. Accumulator is integral with booster. System is open to pressure port of booster.
Charging valve has an orifice and ball check valve. Fluid from pump passes through orifice in valve, unseats ball check valve and enters accumulator. Ball check valve prevents reverse flow.
Accumulator valve is poppet-type valve held closed by accumulator pressure. If no pump pressure is available, an actuator on spool valve sleeve opens accumulator valve. Fluid pressure can also enter accumulator from boost chamber through accumulator valve, when boost chamber pressure exceeds accumulator pressure.
Pressure relief valve vents accumulator to pump return port when pressure in accumulator exceeds approximately 1600 psi (112kg/cm2)
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RV and bus conversion info since 1996.
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