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Rexroth Pump Repair

Hydraulic pumps are manufactured to withstand wear and tear, but even the most robust devices need repairing now and then. Panagon System specializes in Rexroth pump repair. Bosch Rexroth hydraulic pumps are designed for the highest level of compatibility with a wide range of industrial solutions and applications. Every pump we repair is rigorously inspected and cleaned to identify the issue. We test all components after repairs are completed to ensure the device is compliant with all manufacturer regulations. 

Hydraulic Pump Repair 

With more and more hydraulic pump applications, repairing and rebuilding malfunctioning devices has become increasingly common. The repair process is complex because rebuilt components must function to the original manufacturer’s specifications. Fixed devices should work like new, but they must be able to compete with newer models. Therefore, both engineering and aesthetic considerations are an essential part of the rebuild process.

Generally, the original manufacturer will provide directions for repairing the pump. The principles should contain which parts can be repaired and which components need to be replaced. 

Differences Between Pump Repairs and Rebuilds 

The terms repair and rebuild are often used interchangeably in the hydraulics industry. However, hydraulic pump repair is vastly different from pump rebuilds. There are certain times when repairs are appropriate and other times when a complete rebuild is necessary. 

Hydraulic repairs: A repair procedure involves restoring an outdated, failed component to its original form and function. Many features can be repaired, but repairs should not be attempted on specific elements that will not provide service comparable to the original unit. Repairing each part to the manufacturer’s specifications is essential so the entire unit can function within its original specification. Many pump components can be repaired as long as the unit dimensions, tolerance and clearances are restored within the suggested limit. 

Hydraulic rebuilds: A rebuild involves disassembling the unit and inspecting individual components to identify the problem. Once the issue is identified, the unit is rebuilt with new or remanufactured parts.  Parts are replaced rather than repaired to ensure the entire device functions according to original manufacturer specifications. 

Most piston pump repair issues can be resolved by repairing one or more failing components. One of our technicians will let you know if a repair is impossible and a more extensive rebuild process must be completed. 

Common Problems With Piston Pumps 

Diagnosing why your pump is malfunctioning often requires you to disassemble the device and inspect the individual internal parts. Most pump failures result from oil contamination, blocked or restricted pump inlets, fatigue from pressure spikes and pump pressurization issues. These four items account for the majority of all hydraulic pump repairs. Panagon technicians are trained to identify these four causes of pump failure quickly. 

Oil contamination: Contamination is one of the most common reasons for pump failure. Impurities in the oil or other pump fluids can result from environmental pollution, egress of water or other contaminants. There are a few signs to look for if you suspect your pump is contaminated. Your oil may be compromised if you see vertical scratches on the barrels, cuts on the piston’s surface, and extreme wear and tear on the saddle bearings. Other signs to look for include clogged orifices and decreased pump performance.  

Fatigue from pressure spikes: Fatigue caused by inadvertent pressure spikes is among the leading causes of pump failure. This type of fatigue often causes cracked pistons, shafts and control pins. The pump’s body cannot handle this transient pressure, causing cracks or tears in various device components. Unfortunately, this is a complex problem to identify and address without disassembling the unit and inspecting individual components. Pressure spikes can take shape and dispel within a few minutes, making them difficult to locate without sophisticated electronic monitoring tools. You may want to invest in a monitoring device if you suspect your device is undergoing pressure spikes. 

Blocked or restricted pump inlets: Blocked piston pump inlets are a common problem that can wreak havoc on any device. Restricted inlets often present themselves in the form of cavitation, which usually appears on the valve or seal plate. Cavitation occurs when there is not enough liquid in the inlet, causing vaporization in the pump’s chambers. When a vapor bubble is pressurized, it instantly collapses and causes mass erosion of both metallic and ceramic components. You will know when this occurs because the collapse causes a loud noise. While some failures will be louder than others, most noises are audible in the valve area of the pump’s head. Blocked inlets should be remedied immediately because cavitation can cause decreased outlet flow and pressure. Cavitation can also deteriorate pump seals, valves and manifolds. Seal deterioration is caused by a lack of lubrication in the pump. 

Pump pressurization problems: Power transmission in a hydraulic pump or actuator is caused by a flow and pressure process. Thus, the amount of power a pump produces is a result of its ability to generate flow. However, what happens when the pump’s pressure control device malfunctions and the operating pressure is more than maximum design limits? This scenario is known as case over-pressurization. Your pump will not malfunction the moment over pressurization occurs, but it can impede the device’s performance in multiple ways. The most common causes of over pressurization are mechanical damage, valve plate separation and a decrease in lubrication. 

Types of Rexroth Pumps Panagon Systems Repairs 

Rexroth hydraulic pumps are used in a wide variety of industrial applications. These pumps are specially designed for maximum compatibility, ensuring the devices can be used in various environmental settings. Panagon Systems repairs several Rexroth pump models. We carry replacement parts for the following device models:  

  • A10V10
  • A10V28
  • A10V45
  • A10V71
  • A10V100
  • A10V140
  • A10VSO

This is not a comprehensive list of all the models we can repair. Our technicians are trained to diagnose and repair the most comprehensive range of pumps possible. We specialize in repairing and replacing aftermarket and obsolete pumps that other shops are not equipped to handle. 

Replacement Rexroth Pumps 

There are occasions when repairing your device is not the best option. Some individual components are not designed to be restored to their original form and function. In those instances, a replacement part is the best option. We carry both new and aftermarket parts to accommodate a wide range of pump models. Our technicians will disassemble your pump, diagnose the issue and replace the faulty part. Our experts will always let you know if a replacement job is necessary before completing the process. 

We guarantee the form and function of all replacement parts. If you notice any issue with the part, simply call our office and we will work to address the problem as soon as possible. We stand by our work and strive to make sure all of our repairs and replacement jobs function as well as the original device. 

Panagon’s Rexroth Pump Repair Services

Panagon Systems is a respected leader in the hydraulics industry. With many years of experience, we have developed a strategy that allows us to simultaneously manufacture Rexroth pumps, offer repair services and supply replacement parts to clients and other shops. No matter the cause of your pump malfunction, we can identify the issue and prescribe the best remedy to get your device up and running and as soon as possible.


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