The Wheel Brake Assembly (WBHR) is a vent to air type reservoir.

The Reservoir is made of transparent PMMA plastic material and is closed by a cap provided with a venting valve.

The WBHR cylinder is externally marked with engraving letters to indicate the minimum (MIN) and maximum (MAX) level of HYD fluid.

The venting valve allows to keep the contained HYD fluid at ambient pressure.