About This Unit

NC Servo Tech provides repair and reconditioning for the MOOG 77-5NC. With in-house tooling and stocked parts, we keep turnaround times short.

Experience and Warranty

We stock common wear parts in-house, so most rebuilds don’t require outside sourcing. Less waiting, faster turnaround.

17,000+ valves in stock including MOOG 77-5NC exchange units

Frequently Asked Questions

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.

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

We can often prioritize urgent jobs. Note it on your request form and we’ll let you know what’s possible.

Yes. Our repairs include a 12-month warranty on parts and labor covering parts and labor.

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

Rebuild Steps

We rebuild every valve from the inside out: cleaning, inspection, parts replacement, reassembly, and bench testing.

  • 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.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.

Diagnostic Testing

With over a dozen dedicated flow 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 operational testing verifies proper functionality.

Industries We Serve

Our trusted repair services for the MOOG 77-5NC are trusted across various sectors including Power Generation, Defense, and Plastics & Injection Molding. We understand the unique demands of valves in these environments.

MOOG 77-5NC Specifications

Every MOOG 77-5NC we service is tested under real-world conditions. Our diagnostics verify performance against published specifications. Specification sheets and Technical diagrams are available for purchase upon request.

Stock Availability

With over 17,000 valves in stock, we can often provide faster turnaround by sourcing parts in-house rather than waiting on OEM lead times.

Maintenance Tips

  • Use only manufacturer-recommended hydraulic fluids to protect internal valve surfaces.
  • Flush the hydraulic system after any major repair to remove debris before reinstalling the MOOG 77-5NC.
  • Replace inline filters according to maintenance schedules to maintain proper flow rates.

Start Your MOOG 77-5NC Reconditioning Process

Request pricing, availability, and turnaround for your MOOG 77-5NC. NC Servo Tech provides independent repair with a 1-year warranty. Contact us to request your repair.

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NC Servo Tech 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.