Bendix Hydro-Boost

The hydraulic brake booster consists of an open center spool valve and a hydraulic cylinder combined into a single housing. The power steering pump provides the hydraulic fluid pressure to operate both the power brake booster and power steering gear.

A dual master cylinder is bolted to the brake booster and is operated by a push rod projecting from booster cylinder bore. The brake booster also has a reserve accumulator system, which stores fluid under pressure to provide one power-assisted brake application when power steering pump fluid flow is interrupted.