About This Unit

Whether the issue is age, wear, or contamination, the MOOG 79-303A can often be restored. NC Servo Tech applies the same structured approach to every rebuild.

Experience and Warranty

Unlike OEM shops, we use our own inventory to handle most rebuilds. That cuts down on lead time and gets your unit back faster.

17,000+ valves in stock including MOOG 79-303A exchange units

Frequently Asked Questions

Yes. If the unit can’t be repaired, we contact you with options before doing anything further.

Warranty coverage of a one-year warranty is included with every repair we complete.

Yes. Our technicians can often identify units based on photos, dimensions, or manufacturer markings. Send a photo before shipping to speed up intake.

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

We give you a straight assessment after inspection. If repair doesn’t make sense, we’ll let you know and discuss alternatives.

Repair Process

The repair process for the MOOG 79-303A includes disassembly, diagnostic review, and replacement of failed seals, spools, or other elements. Final assembly includes leak and function testing.

  • Teardown: Every valve is disassembled for internal inspection.
  • 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.
  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.

Testing and Bench Verification

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 performance testing verifies spec-level operation.

Performance Data

Every MOOG 79-303A we service is tested under typical applications. Our diagnostics verify performance against published specifications. Cycle life data and Performance data are available for purchase upon request.

Additional MOOG 79-303A Services

Beyond standard refurbishment, we offer specialized reconditioning for your MOOG 79-303A unit. Our disassembly process includes mineral bath cleaning and reassembly to spec, using only replacement replacement components.

Turnaround and Shipping

As a dedicated source for MOOG 79-303A services, NC Servo Tech targets quick resolution with typical lead times of 1 to 2 weeks. Benefit from our dedicated support team to keep your systems running smoothly.

Maintenance Tips

  • Flush the hydraulic system after any major repair to remove debris before reinstalling the MOOG 79-303A.
  • Store spare MOOG 79-303A valves in a clean, dry environment to prevent corrosion and contamination.
  • Document all maintenance activities to track performance trends over time.

Get a Free Evaluation for Your MOOG 79-303A

Request pricing, availability, and turnaround for your MOOG 79-303A. NC Servo Tech provides independent repair with a 1-year warranty. Contact us to start 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.