Inspection and Repair Process

Our repair process for the REXROTH 4WESJ51/AG24N9K4/V begins with teardown and ultrasonic cleaning to assess all components.

Why Repair With NC Servo

As a specialized repair facility, we have dedicated test equipment that general-purpose shops don’t. That means your REXROTH 4WESJ51/AG24N9K4/V gets serviced by people who work on these units regularly.

Factory-level test stands dedicated to REXROTH 4WESJ51/AG24N9K4/V performance verification

Frequently Asked Questions

Part of our intake includes troubleshooting to determine the failure point. We report findings before proceeding.

Expedited options are available depending on current scheduling. Contact us to discuss your timeline.

It depends on the unit and scope of work. We provide an estimated timeline after initial evaluation.

Yes. Photos of the nameplate and overall unit let us begin identification before it arrives, which speeds up the process.

Yes. Send us photos of the unit from multiple angles. Our team has serviced thousands of models and can often ID them visually.

Rebuild Steps

The process begins with disassembly and visual evaluation. We then clean, replace worn pieces, and reassemble the valve to restore its function.

  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.

Hydraulic Testing Process

With thirteen in-house test stands and a Hagenbush proportional valve system, we verify flow curves, hysteresis, frequency response, and more. Performance reports and graphs are available for purchase on request. Our performance testing verifies proper functionality.

Technical Specifications

Every REXROTH 4WESJ51/AG24N9K4/V we service is tested under real-world conditions. Our diagnostics verify performance against published specifications. Performance data and Specification sheets are available for purchase upon request.

Repair, Rebuild and Exchange Options

Beyond standard refurbishment, we offer specialized repairs for your REXROTH 4WESJ51/AG24N9K4/V unit. Our disassembly process includes pressure testing and disassembly, using only new replacement components.

Turnaround and Shipping

As a focused repair facility for REXROTH 4WESJ51/AG24N9K4/V services, NC Servo targets quick resolution with typical lead times of 2 to 3 weeks. Benefit from our dedicated support team to keep your systems running smoothly.

Technical Information

For documented insights into your REXROTH 4WESJ51/AG24N9K4/V, we can provide access to service logs and reports. This transparency offers you record-keeping and aids in long-term maintenance planning.

Maintenance Tips

  • Keep hydraulic fluid clean and at proper levels for consistent valve operation.
  • Replace inline filters according to maintenance schedules to maintain proper flow rates.
  • Monitor operating temperatures to identify potential issues before failure occurs.

Get a Free Evaluation for Your REXROTH 4WESJ51/AG24N9K4/V

Request pricing, availability, and turnaround for your REXROTH 4WESJ51/AG24N9K4/V. NC Servo provides independent repair with a 1-year warranty. Contact us to start your repair.

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NC Servo is an independent third-party repair facility. We are not affiliated with, endorsed by, sponsored by, or authorized by REXROTH or any original equipment manufacturer (OEM), nor do we claim to be a REXROTH service center. All brand names, trademarks, model numbers, and part numbers referenced on this page are the property of their respective owners and are used solely for identification and compatibility purposes.