Hydraulic Pump & Motor Repair Services | Industrial Hydraulic Service

Hydraulic Pump & Hydraulic Motor Repair and Refurbishment Services

Hydraulic pumps and hydraulic motors are critical components in industrial machinery, mobile equipment and hydraulic power systems. When these components lose performance, develop internal leakage or suffer mechanical damage, the resulting downtime can have a significant impact on production and operating costs.

Professional hydraulic pump repair, hydraulic motor repair and hydraulic component refurbishment can often restore a component to reliable operating condition without replacing the complete unit.

At Hidroman, we provide professional hydraulic pump and hydraulic motor inspection, repair, refurbishment and testing services for industrial and mobile hydraulic applications.

Our service process includes component inspection, dismantling, cleaning, dimensional measurement, failure analysis, replacement of worn components, reassembly and performance testing.

Professional Hydraulic Pump Repair and Refurbishment

A hydraulic pump is responsible for converting mechanical power into hydraulic flow. Its performance directly affects the pressure, flow rate, efficiency and overall reliability of a hydraulic system.

A damaged or worn hydraulic pump may cause:

• Reduced hydraulic pressure
• Loss of flow
• Increased internal leakage
• Excessive noise
• Overheating
• Poor machine performance
• Unstable operation
• Increased energy consumption
• Unexpected machine downtime

A professional hydraulic pump refurbishment does not simply involve replacing seals. The complete pump must be inspected to determine the actual cause of failure.

Depending on the pump design and condition, the following components may be inspected:

• Pump housing
• Shaft
• Bearings
• Bushings
• Pistons and piston shoes
• Cylinder block
• Valve plate
• Swash plate
• Rotating group
• Seals and O-rings
• Control components
• Wear surfaces

Components that do not meet the required technical tolerances may need to be repaired or replaced.

Hydraulic Motor Repair and Refurbishment

Hydraulic motors convert hydraulic energy into mechanical rotary motion and are widely used in mobile machinery, winches, conveyors, industrial equipment and other hydraulic drive applications.

A worn or damaged hydraulic motor can cause:

• Loss of torque
• Reduced rotational speed
• Excessive leakage
• Abnormal noise
• Vibration
• Overheating
• Irregular rotation
• Reduced machine productivity

Our hydraulic motor repair service starts with a detailed inspection of the motor and its internal components.

Depending on the motor type, we inspect and evaluate:

• Housing and covers
• Drive shaft
• Bearings
• Piston assembly
• Rotating group
• Valve plate
• Cylinder block
• Sealing elements
• Control components
• Wear surfaces

The objective is not simply to repair the visible damage, but to identify the underlying cause of the failure and prevent premature reoccurrence.

Hydraulic Pump and Motor Refurbishment Process

A professional refurbishment process should be systematic and traceable. At Hidroman, hydraulic components are evaluated according to their condition and technical requirements.

1. Initial Inspection

The hydraulic pump or motor is first identified by its manufacturer, model and serial number where available.

Information about the machine, operating pressure, flow rate, hydraulic oil, operating temperature and failure symptoms can also help determine the root cause of the problem.

2. Dismantling

The component is carefully dismantled so that each critical part can be inspected individually.

During dismantling, signs of:

• Mechanical wear
• Scoring
• Cavitation
• Contamination
• Overheating
• Corrosion
• Surface damage
• Abnormal wear patterns

are examined.

3. Cleaning and Component Inspection

All relevant components are thoroughly cleaned before detailed inspection.

Hydraulic contamination is particularly important because particles circulating through a hydraulic system can accelerate wear in precision components.

For this reason, component refurbishment should be considered together with the cleanliness of the hydraulic system.

4. Dimensional Measurement

Critical components are measured to determine whether they remain within the required tolerances.

This can include checking shafts, bearing surfaces, rotating groups, piston assemblies, valve plates and other precision surfaces.

The decision to reuse, repair or replace a component should be based on its technical condition rather than visual inspection alone.

5. Replacement of Worn Components

Depending on the inspection results, worn or damaged components may be replaced.

Typical replacement items can include:

• Seals
• O-rings
• Bearings
• Bushings
• Pistons
• Piston shoes
• Valve plates
• Shafts
• Rotating groups
• Other damaged or worn components

Where technically appropriate, suitable replacement components are selected according to the requirements of the specific hydraulic unit.

6. Reassembly

After inspection and refurbishment, the hydraulic pump or motor is carefully reassembled.

Correct assembly, cleanliness and appropriate installation procedures are essential for achieving reliable performance.

Hydraulic systems are sensitive to contamination, and ISO 4413 addresses cleanliness, maintenance, reliable operation and safety principles for hydraulic fluid power systems and components.

7. Pressure and Performance Testing

Testing is an important part of the refurbishment process.

Depending on the component type and application, testing may include:

• Pressure
• Flow
• Speed
• Torque
• Internal leakage
• Temperature
• Functional operation
• Stability under operating conditions

Testing helps verify the condition of the refurbished component before it is returned to service.

Why Do Hydraulic Pumps Fail?

Hydraulic pump failures can have many different causes. Replacing the pump without investigating the original failure may result in the same problem occurring again.

Common causes include:

Hydraulic Oil Contamination

Contaminated hydraulic oil can cause accelerated wear of precision components.

Cavitation

Cavitation can occur when the pump does not receive sufficient oil at the required inlet conditions. It can result in noise, vibration and serious internal damage.

Incorrect Hydraulic Oil

Using unsuitable hydraulic fluid or operating outside the recommended viscosity range can negatively affect pump performance and component life.

Excessive Operating Temperature

High hydraulic oil temperature can accelerate seal degradation, reduce viscosity and increase component wear.

Incorrect Pressure Settings

Operating a hydraulic pump above its intended pressure range can result in excessive mechanical stress and premature failure.

Poor Filtration

Inadequate hydraulic filtration allows contaminants to circulate through the system and can significantly reduce the service life of hydraulic components.

For this reason, hydraulic pump repair should ideally include an assessment of the hydraulic system in which the pump operates.

Common Causes of Hydraulic Motor Failure

Hydraulic motors can also fail because of both mechanical wear and hydraulic system problems.

Common causes include:

• Contaminated hydraulic oil
• Insufficient filtration
• Excessive pressure
• Incorrect oil viscosity
• High operating temperature
• Cavitation
• Mechanical overload
• Incorrect installation
• Excessive internal leakage
• Long-term component wear

If a hydraulic motor loses torque or speed, the motor itself may not always be the only problem.

The hydraulic circuit, pressure, flow, oil condition and filtration system should also be considered during the diagnosis.

Hydraulic Pump and Motor Brands We Service

Hidroman provides hydraulic component repair and refurbishment services for a wide range of manufacturers and hydraulic technologies.

Depending on the component and availability of technical information and spare parts, our service experience includes brands such as:

• Bosch
• Denison
• Eaton
• Hitachi
• Kawasaki
• Komatsu
• Linde
• Oilgear
• Parker
• Rexroth
• Uchida
• Staffa
• Danfoss
• Sundstrand
• Vickers
• And other hydraulic component manufacturers

If your hydraulic pump or motor is not listed above, you can still contact us with the manufacturer, model and serial number for an initial technical assessment.

Industrial Hydraulic Pump Repair

Hydraulic pumps are used throughout demanding industrial applications where reliability and continuous operation are critical.

Our hydraulic component refurbishment services can be applied to equipment used in industries such as:

• Steel and metal processing
• Manufacturing
• Energy
• Mining
• Construction
• Material handling
• Marine applications
• Heavy industry
• Industrial automation
• Special-purpose machinery

For industrial customers, professional component refurbishment can help reduce unplanned downtime and extend the operating life of existing hydraulic equipment.

Mobile Hydraulic Pump and Motor Repair

Mobile machinery operates under demanding conditions, including vibration, temperature variations, heavy loads and contaminated working environments.

Hydraulic pumps and motors used in:

• Excavators
• Cranes
• Wheel loaders
• Agricultural machinery
• Forestry equipment
• Mining machinery
• Construction machinery
• Material handling equipment
• Road construction machinery

can experience significant wear over time.

Professional inspection and refurbishment can help determine whether a component should be repaired, refurbished or replaced.

Hydraulic System Cleanliness After Component Repair

Replacing or refurbishing a hydraulic pump or motor does not necessarily eliminate the original cause of failure.

If the hydraulic system contains excessive contamination, a newly refurbished component may be exposed to the same damaging conditions immediately after installation.

For this reason, hydraulic system cleanliness should be evaluated after a major component failure.

Depending on the application, this may include:

• Hydraulic oil filtration
• Offline filtration
• System flushing
• Filter replacement
• Oil condition assessment
• Contamination control
• Reservoir cleaning

Hidroman also provides hydraulic filtration and flushing solutions designed to support hydraulic system cleanliness and component reliability.

Repair or Replace: Which Is the Better Option?

A damaged hydraulic pump or motor does not automatically need to be replaced.

The decision between hydraulic pump repair and replacement should consider:

• Component condition
• Housing condition
• Extent of wear
• Availability of spare parts
• Repair cost
• Replacement cost
• Required operating pressure
• Required flow rate
• Machine downtime
• Expected remaining service life

If the main housing and critical components remain technically suitable, refurbishment may provide a cost-effective alternative to purchasing a new hydraulic unit.

However, if the component has severe structural damage or refurbishment is not economically viable, replacement may be the better solution.

Why Choose Hidroman for Hydraulic Component Repair?

Hidroman provides hydraulic engineering, component repair, refurbishment, testing and maintenance solutions for industrial and mobile hydraulic applications.

Our approach focuses on identifying the root cause of hydraulic component failure, rather than simply replacing damaged parts.

Our hydraulic service capabilities include:

• Hydraulic pump repair
• Hydraulic pump refurbishment
• Hydraulic motor repair
• Hydraulic motor refurbishment
• Hydraulic component inspection
• Failure analysis
• Dimensional measurement
• Component testing
• Hydraulic system inspection
• Hydraulic oil filtration
• Hydraulic system flushing
• Hydraulic maintenance
• Hydraulic system engineering

This integrated approach allows the hydraulic component and the hydraulic system to be considered together.

Get Your Hydraulic Pump or Motor Assessed

If your hydraulic pump or hydraulic motor is experiencing pressure loss, reduced flow, excessive noise, overheating, leakage, torque loss or unstable operation, professional inspection can help identify the cause.

Send us the following information for an initial assessment:

• Manufacturer
• Model
• Serial number
• Photos of the component
• Machine application
• Operating pressure
• Flow rate, if available
• Description of the failure

Our technical team can evaluate the component and advise whether repair, refurbishment or replacement is the most appropriate solution.

Hydraulic Pump & Motor Repair in Europe

Hidroman supports industrial customers looking for reliable hydraulic pump repair, hydraulic motor repair and hydraulic component refurbishment solutions.

For European customers, we can evaluate hydraulic components from different manufacturers and applications based on the available technical information.

Contact Hidroman for hydraulic pump and hydraulic motor refurbishment, repair and testing.

Your Hydraulic Pumps and Hydromotors are in Safe Hands!

With the transparent approach of our Authorized and Efficient Service Consultants, all your Hydraulic Pumps and Hydromotors are revised with Original Spare Parts and delivered to you after pressure and function tests.

Hydraulic Pump Revision is carried out with original spare parts and our expert staff, and our hydraulic test equipment is 100% controlled and guaranteed.

Determining Sector Standards in Hydraulic Pump Revision
We have specialized in hydraulic repair services for over 20 years, so when it comes to hydraulic component repairs, you can count on no one to handle them better than Hidroman. We have the experience and expertise required to repair and rebuild piston, vane and gear type pumps and motors for most mobile or industrial applications.

Exceptional know-how, state-of-the-art equipment and complete in-house processing capabilities give you a flexible one-stop-shop for hydraulic repairs. These capabilities, gained in the last thirty-five years, enable us to save our customers time and keep our prices competitive. Every year, we find ways to manufacture and supply parts that OEMs no longer supply or support. It gives us the ability to offer support not only for current models but also for older models. Also, our repair support covers all major component manufacturers. Contact us to get a free quote for repair.

BOSCH / RACINE HYDRAULIC PUMP REPAIR
We can repair many different hydraulic pumps and motors from Bosch and Racine.

CONTINENTAL HYDRAULIC PUMP REPAIR
Among the Continental brand units we can repair are HPV, HPR and PVX series.

DENISON HYDRAULIC PUMP REPAIR
We repair a large number of Denison units every year. Including series M14, M4, M6, M7, M8, P6, P7, P14, T6 and T7.

EATON HYDRAULIC PUMP REPAIR
We can repair many different Eaton brand hydraulic pumps and motors.

HITACHI HYDRAULIC PUMP REPAIR
The Hitachi pumps we frequently repair are HPV, HMGC and HMGF series.

KAWASAKI HYDRAULIC PUMP REPAIR
We can repair many different hydraulic pumps and motors of Kawasaki brand. Including K3V, K3VL, K3SP, K5V, K7V, NV, MB, MX, M2X, M3X and M5X series.

KOMATSU HYDRAULIC PUMP REPAIR
Komatsu HPV series is a common pump found in mobile applications that we repair.

LINDE HYDRAULIC PUMP REPAIR
We can repair many different Linde brand hydraulic pumps and motors.

OİLGEAR HYDRAULIC PUMP REPAIR
In the case of Oilgear brand units, we can repair most of the entire series. This includes the PVWH, PVWJ, PVWW, PVG, PVM, PVK, D and C series.

PARKER HYDRAULIC PUMP REPAIR
We can repair many different Parker brand hydraulic pumps and motors.

REXROTH / UCHIDA HYDRAULIC PUMP REPAIR
We can repair many different Rexroth and Uchida brand hydraulic pumps and motors. Rexroth has a wide variety of units and different series, most of which we can repair.

STAFFA HYDRAULIC PUMP REPAIR
The common engine series we repair at Staffa is the HMB series. We generally repair all displacement dimensions of this series.

DANFOSS / SUNDSTRAND HYDRAULIC PUMP REPAIR
We can repair many different hydraulic pumps and motors from Sundstrand. Including Series 15, 18, 20-27, 30, 40, 44, 45, 51V, L, 90 and H1.

VICKERS HYDRAULIC PUMP REPAIR
We can repair many different Vickers brand hydraulic pumps and motors.