C-5 gear swing test

The term motor is not really correct, you use a pump to build pressure in your pressure lines, then you can control the flow through these lines and regulate the pressure in your cylinders by using valve’s. These valve have all sorts of funny ways top operate.

My point is, saying it’s driven by a motor is like saying the aircraft banks because the engines are running. Whilst in reality the aircraft turns on the hydraulic power supplied by the systems that get their pressure from the accessory gearbox hydraulic pumps.