Repair Procedure

Each MOOG D651-346A undergoes reconditioning — disassembly, parts replacement, reassembly, and bench testing before shipment.

Why Repair With NC Servo

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

17,000+ valves in stock including MOOG D651-346A exchange units

Frequently Asked Questions

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

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

Expedited options are available depending on current scheduling. Contact us to discuss your timeline.

We recommend sending pictures, especially if the model number is unclear or there is visible damage.

Yes, a 12-month warranty on parts and labor is standard on all repairs. Details are provided with your service report.

How We Rebuild This Valve

The repair process for the MOOG D651-346A includes disassembly, diagnostic review, and replacement of failed seals, spools, or other elements. Final assembly includes leak and function testing.

  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • 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.
  • Teardown: Every valve is disassembled for internal inspection.

Testing and Bench Verification

NC Servo operates thirteen in-house test stands, including setups for proportional and servo valves. Every valve goes through performance and leak testing using a range of hydraulic fluids like Skydrol and MIL-5606. Our functional testing verifies consistent performance.

Performance Data

Every MOOG D651-346A we service is tested under operating environments. Our diagnostics verify performance against published specifications. Technical diagrams and Performance data are available for purchase upon request.

Repair, Rebuild and Exchange Options

Beyond standard sales, we offer specialized repairs for your MOOG D651-346A unit. Our teardown process includes disassembly and spool evaluation, using only new replacement components.

Lead Times and Support

As a focused repair facility for MOOG D651-346A services, NC Servo targets quick resolution with typical lead times of 2 to 3 weeks. Benefit from our dedicated support team to keep your systems running smoothly.

Data Sheets & Reports

For transparent insights into your MOOG D651-346A, we can provide access to service logs and reports. This transparency offers you compliance assurance and aids in long-term maintenance planning.

Maintenance Tips

  • Keep a spare MOOG D651-346A on hand to minimize downtime during unplanned failures.
  • Flush the hydraulic system after any major repair to remove debris before reinstalling the MOOG D651-346A.
  • Check system pressure regularly to verify it stays within the MOOG D651-346A rated operating range.

Get a Free Evaluation for Your MOOG D651-346A

Request pricing, availability, and turnaround for your MOOG D651-346A. NC Servo provides experienced repair with a 1-year warranty. Contact us to schedule 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.