In this video, we continue the Hitachi EX120-2 excavator rebuild with one of the most important and challenging steps: removing the hydraulic valve block. This component controls multiple key ...

Typical, medium-duty, hydraulic brake system with front discs (red circuit) and rear drums (green circuit). Boost, or assist (blue circuit), is provided by an engine-driven pump, although the power ...

On engines equipped with hydraulic tappets, zero lash at maximum tappet plunger rise can be determined by rotating the pushrod with your fingertips while slowly turning the lash adjusting nut. The ...

Steering is one of the two most important systems on your vehicle (the other being brakes). Finding the perfect steering system for your four-wheeler is vital to making it perform off-road. In the ...

Excessive pressures and temperatures, as well as fluid incompatibility, have always spelled trouble for hydraulic cylinder seals. And the problems promise to continue. Tighter emissions regulations ...