The Ford Bronco Steering Gear, or the Steering box is located at the end of the steering shaft and has a worm type gear that allows the input of the steering wheel to turn the front wheels. Most Ford Bronco steering boxes have power assist that is driven by the power steering pump. Most Ford Bronco steering boxes fail due to inadequate lubrication, so make sure you have plenty of power steering fluid at all times.
Like any other hose, the Ford Bronco power steering hose can eventually develop leaks and need replacement. If you check the Ford Bronco Power steering hose and see small hairline cracks it would be a good time to replace the power steering hose.