Inspection and Repair Process

Each MOOG D634-356E undergoes reconditioning — disassembly, parts replacement, reassembly, and bench testing before shipment.

About Our Shop

NC Servo Technology operates independently, so we’re not tied to manufacturer delays or restrictions. That means more flexibility when your system is down.

Frequently Asked Questions

Photos help us confirm the unit type and speed up intake. You can upload them through our quote request form.

You’ll hear from us either way. If it’s not repairable, we’ll return the unit and provide our findings.

In most cases, repair costs less than replacement, especially for legacy or OEM-specific models. We evaluate every unit and let you know what makes sense.

You can send it as-is. We handle all cleaning and preparation as part of our standard process.

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

Repair Process

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

  • 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.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • Teardown: Every valve is disassembled for internal inspection.

Diagnostic Testing

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 functional testing verifies consistent performance.

Industries We Serve

Our reliable repair services for the MOOG D634-356E are trusted across various sectors including Aerospace, Marine, and Automotive. We understand the unique demands of valves in these environments.

Additional MOOG D634-356E Services

Beyond standard sales, we offer specialized repairs for your MOOG D634-356E unit. Our overhaul process includes internal inspection and reassembly to spec, using only new replacement components.

Lead Times and Support

As a specialist for MOOG D634-356E services, NC Servo Technology targets quick resolution with typical lead times of 2 to 3 weeks. Benefit from our dedicated support team to keep your systems running smoothly.

Maintenance Tips

  • Replace inline filters according to maintenance schedules to maintain proper flow rates.
  • Check valve alignment carefully to prevent undue stress on internal components.
  • Flush the hydraulic system after any major repair to remove debris before reinstalling the MOOG D634-356E.

Ready to Restore Your MOOG D634-356E?

Request pricing, availability, and turnaround for your MOOG D634-356E. NC Servo Technology provides experienced repair with a 1-year warranty. Contact us to schedule your repair.

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NC Servo Technology is an independent third-party repair facility. We are not affiliated with, endorsed by, sponsored by, or authorized by MOOG or any original equipment manufacturer (OEM), nor do we claim to be a MOOG 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.