Overview

At NC Servo Technology, our shop is equipped to service the MOOG D656-702. We use a consistent process to restore each unit to working condition.

Repair Procedure

Our process involves a teardown of your MOOG D656-702, ultrasonic cleaning, and reassembly with quality parts to restore operation.

Frequently Asked Questions

Helpful but not required. If you can photograph the label, connectors, and overall unit, it gives our team a head start.

Yes. Every unit goes through diagnostic testing and we provide an assessment before moving forward.

No cleaning required. Our repair process includes disassembly and cleaning of all components.

Send it in for evaluation. We’ll inspect it and give you a repair-vs-replace recommendation based on the actual condition of the unit.

Even if the tag is worn off, we can often match the unit based on shape, size, and internal configuration.

Why Repair With NC Servo

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

Specializing in MOOG D656-702 servo valve technology for over five decades

How We Rebuild This Valve

Once a valve arrives, we tear it down fully, examine key surfaces, and replace worn or damaged parts using components we stock in-house, cutting out OEM lead times.

  • Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.

Testing and Bench Verification

We carry out full diagnostics on every valve, including flow gain, leakage, pressure shift, and frequency testing. Our test facility supports performance logging and report generation. Our performance testing verifies consistent performance.

Common Applications

Our reliable repair services for the MOOG D656-702 are trusted across various sectors including Defense, Construction, and Industrial Machinery. We understand the unique demands of valves in these environments.

Maintenance Tips

  • Document all maintenance activities to track performance trends over time.
  • Replace inline filters according to maintenance schedules to maintain proper flow rates.
  • Check system pressure regularly to verify it stays within the MOOG D656-702 rated operating range.

Let Us Repair Your MOOG D656-702

Request pricing, availability, and turnaround for your MOOG D656-702. NC Servo Technology provides hands-on repair with a 1-year warranty. Contact us to start 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.