Hydraulic Repair Services

Radwell International offers hydraulic repair services for cylinders, conventional pumps, motors, and valves. This offering enables our customers to save up to 50% vs. buying new. We provide a free repair evaluation and repair pick-up where available.

Hydraulic Pumps Repair – Piston, Vane
Hydraulic Motors Repair – Piston, Vane
Hydraulic Valve Repair – Manual Valve, OBE Proportional Valve, Servo Valve, Solenoid Valve
Hydraulic Cylinder Repair

Learn more about the beast here

Popular Hydraulic Repair Services

Hydraulic Pumps Repair – Piston, Vane

Piston Pump

All piston pumps parts are inspected and remanufactured back to OEM specifications or replaced as needed.
All bores are inspected to ensure they meet specifications
Valve plates are inspected and lapped
The metering and timing notch is checked and cut if found out of tolerance
The cylinder block is lapped and treated to increase meantime between failures.
The piston shoe subassembly diameter is matched with cylinder bore diameters to match the manufacturers' specs.
The Piston shoe height is checked using a micrometer to ensure the repair is within tolerance.
All pumps are tested under full load; flowrates, pressure, and temperature are recorded on output and case drain.
Test reports are provided with each repair.

Vane Pump

The vane slots are checked to guarantee vanes will be stable and free moving.
The vane set is checked with a micrometer for proper thickness.
The set is refinished and checked as a set.
All vane tip surfaces are returned to original condition.
All cam ring inside contours are refinished
Using our lapping machine all plates are precision lapped
All lubrication grooves, depth of metering, timing notches and are checked and recut to tolerance.
Every plate is surface treated to allow the microscopic film of oil that must be present between the plate and the rotor.
All pumps are tested under full load; flowrates, pressure, and temperature are recorded on output and case drain.

Hydraulic Motors Repair – Piston, Vane

Piston Motor

The rotor & pistons checked and repaired as needed.
The distributor checked and remanufactured as needed.
The gaskets, seals, and o-rings are replaced with new parts.
All bearings are replaced to ensure smooth operation and a long lifecycle.
The distributor casing is lapped or honed.
Motors are load tested on our hydraulic test bench and under load on our hydraulic dynamometer.

Vane Motor

The timing notches, lubrication grooves, depth of metering, and seal grooves are checked and repaired as needed.
The plate surface is treated to ensure high torque capability, low leakage, and longer lifecycle.
Every cam ring inside contour is refinished using a series of polishing wheels that follow the contour to smooth out even the slightest surface imperfections without changing the slope and dwell angles
After the surface is polished a severe duty proprietary coating is applied to the inside ring contour to reduce ring wear and lengthen its service life.
All vanes are checked with a micrometer for thickness.
Every motor is assembled using new springs and rotors that ensure the proper load on the vanes as well as the proper vane slot dimensions.
Motors are tested under load on our hydraulic dynamometer

Hydraulic Valve Repair – Manual Valve, OBE Proportional Valve, Servo Valve, Solenoid Valve

Manual Valve

The manual valve is taken apart
All parts are fully cleaned
Replace any faulty parts.
Replace spools as needed.
Replace all seals.
Correct timing of the valve.
Reassemble manual valve.
Tested under full load; flowrates, pressure, and temperature are recorded.

OEB Proportional Valve

Full evaluation on test stands for comparison to the manufacturer's specifications.
Valve is disassembled into separate parts.
All parts are cleaned with solvents.
The torque motor is dismantled down to wires and magnets.
All failed parts are changed with new components.
Linear Variable Differential Transformer is tested and flow or pressure calibrated.
The Valve body is inspected to ensure it is within manufacturer's tolerances.
The body spool assembly is checked for wear.
Torque motor and body are reassembled and tested to 100% of the performance specifications.
Tested under full load; flowrates, pressure, and temperature are recorded.

Servo Valve

The servo valve is taken apart
All parts are fully cleaned
Replace any faulty parts.
Replace spools as needed.
Replace all seals.
Correct timing of the valve.
Reassemble servo valve.
Tested under full load; flowrates, pressure, and temperature are recorded.

Solenoid Valve

The solenoid valve is taken apart
All parts are fully cleaned
Replace any faulty parts.
Replace spools as needed.
Replace all seals.
Correct timing of the valve.
Reassemble solenoid valve.
Tested under full load; flowrates, pressure, and temperature are recorded.

Hydraulic Cylinder Repair

The cylinder is taken apart and inspected for failed parts and defects.
Replace or hone barrel if necessary.
Repair or replace rod if necessary.
Replace all gaskets, packings, and seals
The tensile strength of the tie rod is checked to spec
Inspect and repair threaded connections and mounting surfaces.
Test cylinder to 100% rated pressure along entire stroke.
Adjust cushions.
Repainted to OEM colors & finishes

Radwell provides quality repair services for hydraulic components, including motors, pumps, actuators, valves, servo valves, and cylinders. We support a variety of industries whether large or small.

All repairable hydraulic units received into our facilities are disassembled, cleaned, and evaluated. When the evaluation is complete one of our Customer Service Representatives will provide you with a repair quotation. Once you approve the repair, our highly-trained technicians will begin the restoration process. After completion, the hydraulic unit will be placed under a full load test to ensure that it meets or exceeds the OEM standards before shipping the unit back to you.

Features and Benefits

Turnaround times approximately 5 to 10 days
FREE evaluations and quotes for repairs
Performance testing capabilities of all brands
All units are tested to meet or exceed OEM specifications
Expertly trained and experienced technicians
All repairs backed by 2 Year Warranty / Optional 3 Year
Free repair pick up where available

Manufacturers

Bieri
Bodioli Pavesi
Bosch Rexroth
Continental Hydraulics
Danfoss
Denison
Enerpac
Moog
Oilgear
Parker
Star Hydraulics
Vickers
Viking Pumps
and more!

Industries We Served

Ammunition
Amusement Parks
Appliance Manufacturing
Motion Simulators
Battery Manufacturing
Bearing Manufacturing
Bottling Manufacturing
Breweries & Distilleries
Canning Facilities
Compressor Manufacturing
Die Casting
Distribution Centers
Food Processing
Forging Industry
Furniture Manufacturing
Heavy Equipment Manufacturing
Ink Manufacturing
Micro Chip Manufacturing
Mining
Road & Rail Construction
Pulp & Paper
Plastic Blow Molding
Plastic Extrusion
Pump, Cylinder, & Valve Manufacturing
Power Plants
Salvage Yards
Saw Mills
Steel Tube & Pipe Manufacturing
Textiles

Cylinder Disassembly Table

The Beast

Radwell Hydraulic Test Bench (nicknamed The beast) was designed and built in house using state of the art technology. It is capable of testing most manufacturers Pumps motors Cylinders and valves. The bench is all PLC controlled allowing the operator to run part specific automated testing while remaining safe. The beast features over 30+ sensors measuring all aspects of hydraulic performance.

The test bench features a hydrostatic transmission which allows the operator to test pumps and motors under load. While under test the PLC is gathering and recording performance data. At the end of the test a performance graph is printed out and a comparison is made against the manufacturers specifications, Ensuring your equipment meets or exceeds OEM specs.