Common Hydraulic Valve Issues That Dumper Truck Owners Should Know

A dumper truck is one of the most essential construction equipment that contractors possess. Therefore, proper maintenance of the machine's hydraulic valve system is necessary. When a valve fails, the dump box will not lift or lower loads as required. As a result, repair costs will increase, but most importantly, you will miss project deadlines. As a construction firm, schedule over-run is the surest way to lose clients. It is critical to familiarise yourself with common causes of hydraulic valve failure on dumper trucks to keep existing clientele and attract new customers. Read on to find out more.

General Abrasion

The type of work dumper trucks perform means that valve manufacturers have to produce hydraulic valves that are abrasion-resistant, robust, and durable. However, during normal worksite activities, it is common for valves to rub against other components in the hydraulic system or around a worksite. Over time, the rubbing action leads to abrasion thereby causing hydraulic failure. Although general abrasion can be considered normal wear and tear, it is possible to slow down the process by securing the valves in place to help eliminate valve contact with other hydraulic components.

Overheating

Overheating is another common cause of valve failure in dumper trucks. As the dump box is raised and lowered during operation, the system generates heat, which overworks a truck's hydraulic system. Notably, too much heat changes the molecular structure of valve materials; consequently, the valves become hard and brittle that makes them prone to breaking. Secondly, hardened valves cannot allow the smooth release of pressure or fluid along the system. The buildup of pressure and fluid, in turn, leads to hydraulic failure. Therefore, ensure that you keep an eye on the temperature of the hydraulic system every so often. Additionally, you can eliminate overheating by using the recommended hydraulic fluids that will help to absorb and dissipate excess heat in the hydraulic and valve system.

Cavitation

When the hydraulic fluid required by a specific part of a hydraulic system goes over, and above that which is supplied, then that particular section experiences absolute pressure. As a result, air bubbles form in the fluid consequently imploding on compression to cause tearing and rupturing of valves (cavitation). Although the latest valves are made of sturdy material, the implosions can form weak points over time. To avoid cavitation, conduct a regular inspection of the operations of circuit protection devices such as load controls. Most importantly, the examination should be carried out at regular intervals to avoid missing the first signs of cavitation.

For more information or assistance, contact a local valve repair expert.