Hydraulic foot pumps are essentially one of the easiest to operate hydraulic pumps. These pumps work by compressing the hydraulic fluids by pumping by foot. The system works like a regular foot pump, just made a lot more complex for the use of pumping hydraulic fluids. The upside about these pumps is the fact that they are very easy to operate. The downside is that the accuracy of the foot pump is not as regulated as a normal hydraulic pump.