About This Unit

We handle a wide range of MOOG D664-1915E units. Each one receives inspection, internal cleaning, and reconditioning before it ships.

Teardown and Rebuild Steps

Our repair process for the MOOG D664-1915E begins with teardown and mineral bath and ultrasonic cleaning to assess all components.

Frequently Asked Questions

All repairs come with our standard 1-year parts and labor warranty. Contact us for specifics on your unit.

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.

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

If a unit is beyond repair, we explain why and can discuss replacement or exchange options.

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

As a specialized repair facility, we have dedicated test equipment that general-purpose shops don’t. That means your MOOG D664-1915E gets serviced by people who work on these units regularly.

In-house parts inventory eliminates OEM lead time delays for MOOG D664-1915E

Rebuild Steps

We disassemble every valve, inspect it inside and out, and clean all moving parts. Components that fail inspection are swapped out before the valve is rebuilt and tested.

  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.
  • 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.

Diagnostic Testing

Each MOOG D664-1915E is tested on a dedicated flow bench before it ships. We check pressure, flow, leakage, and response characteristics against published specifications. Our operational testing verifies proper functionality.

MOOG D664-1915E Specifications

Every MOOG D664-1915E we service is tested under operating environments. Our diagnostics verify performance against published specifications. Performance data and Technical diagrams are available for purchase upon request.

Maintenance Tips

  • Store spare MOOG D664-1915E valves in a clean, dry environment to prevent corrosion and contamination.
  • Monitor operating temperatures to identify potential issues before failure occurs.
  • Use only manufacturer-recommended hydraulic fluids to protect internal valve surfaces.

Get a Free Evaluation for Your MOOG D664-1915E

Request pricing, availability, and turnaround for your MOOG D664-1915E. NC Servo provides experienced repair with a 1-year warranty. Contact us to request 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 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.