B150 1/2 Ton Van L6-225 3.7L VIN E 1-bbl (1982)
Hydraulic Brake Booster: Description and Operation
Fig. 1 Sectional view of typical Bendix Hydro-Boost unit
Fig. 2 Typical Hydro-Boost unit disassembled
The Hydro-Boost system provides an additional cylinder in the brake system. This cylinder contains no brake fluid. The Hydro-Boost cylinder is
hydraulically operated, by pressurized fluid from the power steering pump, providing power assist to operate a dual master cylinder brake system.
The booster is composed of two sections; the linkage section and the power section.
The booster is designed so that if a total absence of power assist occurs, the brakes can be applied manually, but somewhat greater pressure on the brake