What is the most common cause of hydraulic pump failure?

What is the most common cause of hydraulic pump failure?

Nov 30, 2022
3 minutes

Hydraulic pumps are an essential part of modern manufacturing. They’re used to move fluids—from oil to water—in various industrial applications, from agriculture to construction. Given their importance, it’s not surprising that hydraulic pump failures are common. This blog post will explore the most common causes of hydraulic pump failure and what you can do to prevent them. 

Causes of hydraulic pump failure

Hydraulic pumps are one of the most important components of hydraulic systems. They convert the energy from an engine into motion and power for various equipment in a hydraulic system.

Many factors can cause a hydraulic pump to fail, but the most common cause is an accumulation of debris in the valve chamber or wear on the gears. If these conditions are not addressed, the pump can eventually fail.

How to prevent hydraulic pump failure?

Hydraulic pumps are used in various industries to move fluids such as oil and water. They work by using the power of hydraulic pressure to push or pull objects. If an electric hydraulic pump fails, it can cause significant damage to equipment and surroundings. There are several things you can do to prevent pump failure.

Keep your hydraulic system well-maintained. Regular inspections and repairs will help keep it running smoothly and prevent failures.

Install fail-safe components on your machine. These include backup systems that can take over in case of malfunctions, valves that open automatically in high-pressure levels, and switches that activate alarms in case of problems.

Ensure proper fluid level detection and warning devices are installed on your machine. This will help you detect problems before they become serious, such as low fluid levels triggering a shutdown warning signal.

Repairing hydraulic pump failure

Hydraulic pumps are vital equipment in many industrial and commercial settings, responsible for moving large amounts of fluid.

Several factors can lead to hydraulic pump failure, but the most common cause is wear and tear. Over time, the metal surfaces inside the pump can become corroded and pitted, leading to reduced efficiency and eventual failure. In some cases, damage may be caused by external factors such as water or oil infiltration or by misuse or abuse.

If you notice your hydraulic pump starting to give trouble, it's important to take action quickly. By diagnosing the issue early on, you can prevent further damage and ensure that your machine continues functioning properly. In some cases, repairing the pump yourself may be preferable to buying a new one; however, always consult a specialist if you're unsure about what steps to take.

Hydraulic Pump Maintenance

The most common cause of hydraulic pump failure is wear and tear. Other causes include incorrect assembly, overuse, contamination, and incorrectly fitting components. Ensuring compatibility with the system is crucial, and this involves the proper selection and installation of components, including hydraulic adapters. To prevent pump failure, regular inspection and maintenance are essential.

Regular inspection includes checking the fluid level, inspecting the seals and mating surfaces, checking the alignment of the gears, and performing a functional test. Maintenance includes lubing all moving parts with a suitable lubricant, adjusting the tension on the belt or chain, replacing worn or damaged parts as necessary, and cleaning the unit.

How to work in a safe environment with Hydraulics?

Hydraulic systems account for a high percentage of total operating costs in manufacturing and processing facilities. They are also essential in many agricultural and construction settings. These systems' proper maintenance and operation is critical to their successful performance. Failure to properly maintain or operate hydraulic systems can lead to costly and time-consuming repairs or even complete system failures.

Here are five common causes of hydraulic pump failure:

  1. Improperly maintained engines or pumps
  2. Defective parts or assemblies
  3. Corrosion or fouling from foreign objects (e.g., salt, water, oil, grease)
  4. Inadequate lubrication of moving parts
  5. Failed seals

Temperature Problems

Hydraulic pumps are the primary power source for many industrial applications, including mining, oil and gas production, and manufacturing. They work by using a fluid to create a rotating motion. Problems with hydraulic pumps can cause them to fail, leading to lost production or damaged equipment.

The most common cause of hydraulic pump failure is overheating. Overheating can occur due to several factors, including clogged filters or noisier engines. In extreme cases, overheating can cause the engine to melt down.

To prevent overheating problems, manufacturers typically recommend keeping RPMs low and using cooler fluids in high-pressure applications. Additionally, it’s important to keep an eye on warning signs such as high oil pressure levels or smoke coming from the engine. If you notice any of these signs, consult a professional immediately.

How to reduce human errors with Hydraulics?

There are many ways to reduce human errors in hydraulic systems, but the two most common causes of pump failure are operator fatigue and failed seals. By understanding each of these causes, operators can take steps to prevent them from happening.

Fatigue is a common cause of pump failure because it can lead to mistakes while operating the system. This can be caused by long hours spent working on the machine or by sudden changes in the task. To avoid fatigue, operators should have a regular break schedule and limit their work to several hours. Failed seals are another common cause of pump failure. When air or other substances seep into the system between the pump and valve, it can create a vacuum that pulls the oil out of the reservoir. Seals not properly waterproof can fail this way, causing the machine to stop working altogether. To avoid seal failures, operators should inspect all components regularly for signs of water damage and replace any seals that show signs of wear.


Many people believe that a cracked impeller is the most common cause of hydraulic pump failure. However, this is not always the case. Other causes of hydraulic pump failure include insufficient lubrication, too dry or worn-out seals, and problems with the engine that powers the pump. If you're having trouble with your machine, it's important to get it checked out by a professional to fix the problem as quickly as possible.