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Bendix Hydro-Boost Actuator Cutaway Diagram - Ford Bronco Brake Booster Parts

Cutaway schematic of a Bendix Hydro-Boost actuator labeling the primary/secondary valves, accumulator, power piston, and input/output rods.

AI caption · Photo 388 of 1815

This document is a labeled cutaway schematic of the Bendix Hydro-Boost actuator, a hydraulically-powered brake booster. The cross-sectional diagram identifies all major internal and external components of the unit. Three hydraulic ports are labeled at the top of the housing: TO RESERVOIR, FROM PUMP, and TO GEAR, showing how the unit connects into the power steering hydraulic circuit. Internal components identified include the primary valve, secondary valve, accumulator charging check valve, accumulator valve, boost cavity, ratio lever, power piston, and travel limiter. The pedal-side interface is shown with the input rod, input rod spring, input bracket, and housing cover, while the output rod (which pushes the master cylinder) exits the opposite end of the housing. Below the main body, the accumulator assembly is detailed, showing the accumulator body, accumulator piston, and the nitrogen gas charge that provides reserve braking power. The figure carries the reference number H6260-B. A reader can learn the internal layout, component names, and hydraulic port arrangement of a Bendix Hydro-Boost unit, which is useful for understanding how the booster operates, diagnosing problems, or identifying parts during rebuild or replacement. The document itself states no vehicle year, make, or model applicability.

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Frequently asked questions

What are the three hydraulic ports on a Bendix Hydro-Boost actuator?
The diagram labels three ports on top of the unit: TO RESERVOIR, FROM PUMP, and TO GEAR, connecting the booster into the power steering hydraulic circuit.
What is inside the Hydro-Boost accumulator?
The diagram shows the accumulator consists of an accumulator body, an accumulator piston, and a nitrogen gas charge, along with an accumulator valve and accumulator charging check valve in the main housing.
What valves are inside the Hydro-Boost unit?
The schematic labels a primary valve, a secondary valve, an accumulator valve, and an accumulator charging check valve.
How does the brake pedal connect to the Hydro-Boost?
The input rod (with input rod spring and input bracket) enters through the housing cover, acts through the ratio lever on the power piston, and force is delivered by the output rod at the opposite end of the housing.
What limits travel in the Hydro-Boost power piston?
A component labeled TRAVEL LIMITER is shown adjacent to the power piston inside the housing.

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