What is the role of hydraulics?

On a construction machine, hydraulics transfer power from the diesel engine to the equipment. The pump pressurizes the oil, the valve block directs it, then cylinders and hydraulic motors convert it into movement. It enables generating very high forces with compact components and precise control.

What are the three types of hydraulics?

On machines, there are three hydraulic circuit designs: open center, where oil returns to the tank when no command is active; closed center, where the pump maintains available pressure; and load sensing, where the pump adjusts flow on demand. Your Case machine manual specifies the system used.

Who manufactures the Case brand?

Case belongs to the CNH group, part of CNH Industrial, which includes Case Construction Equipment for construction machinery and Case IH for agricultural equipment. The brand was founded in the USA in the 19th century. Its European excavators owe much to Poclain's heritage.

How to tell if a Case hydraulic pump is worn?

On a Case excavator, a worn pump usually shows by sluggish machine response: longer operating cycles, boom struggling in combined lift, engine speed dropping less under load. A whistling sound at intake or foamy oil completes the picture. Flow measurement on a test bench or machine confirms the diagnosis before ordering.