Think of voltage as electrical pressure; amperage as the volume of electricity flowing; and resistance as electrical friction that resists current. Direct Current or DC is electricity flowing from a battery. Alternating Current is electricity flowing from an alternating power source such as a stator.
The engines in our beloved garden tractors have enough power to push hydraulic oil to 2,000 psi or more. By pushing this oil into different sized hydraulic cylinders we can build almost any tool imaginable.
In 2015 I built a Front end Loader and a backhoe for a 1974 International Harvester Cub Cadet 149. I built the reservoir into one of the loader towers, and ran an 8 GPM gear pump off of the engine’s front PTO Shaft. This pump was connected to a 2 spool directional control valve with a power beyond port. This power beyond port supplied oil to a 6 spool control valve that controlled the backhoe. My hydraulic system is set to have a maximum pressure of 1,000 psi.
The basic components in a hydraulic system are:1.) Reservoir 2.) Pump 3.) Valve 4.) Piston or Motor