This was originally done by steam engines with hydraulic pumps.
With electrical power lost, all 4 hydraulic pumps stopped.
The associated steam raising plant and hydraulic pumps have been removed.
The cutter drum was set into action by a rather large hydraulic pump.
His company, which employs 22 people, exports £3m of hydraulic pumps and motors each year.
The engine also drives an hydraulic pump to provide power for the various tools.
The oil from the hydraulic pumps will do fine for the transmission.
They often go from sitting to standing with a hydraulic pump or electric-powered assist.
It is commonly used to drive large winches or hydraulic pumps.
The oil in the container was connected to a hydraulic pump through a small pipe.