Mustang GT V8-4.6L SOHC VIN X (1998)
Hydraulic Brake Booster: Description and Operation
Reserve System
The reserve power-assist braking system is an integral part of the hydro-boost brake booster. It consists of the following:
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charging valve, accumulator valve
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compressed gas accumulator
The system is charged through the pressure port of the hydro-boost booster.
The accumulator is charged by the power steering pump pressure during normal steering or braking operation.