In this episode of the Hitachi EX120-2 excavator rebuild, we tackle one of the most complex hydraulic components: the valve control block. This assembly is responsible for directing hydraulic flow to ...

Hydraulic pumps, cylinders, and other actuators deliver greater power in smaller packages than engines, electric motors, and mechanical actuators. Hydraulic valves easily control direction, speed, ...

Riding on last month's How It Works topic (cams) is this month's topic—lifters. These cylindrically shaped components contact the lobes of the cam to convert the eccentric shape of the lobe into ...