How We Repair Your Unit

Our repair process for the MOOG 631-346C-4 begins with teardown and ultrasonic cleaning to assess all components.

Key Details

We handle a wide range of MOOG 631-346C-4 units. Each one receives inspection, internal cleaning, and reconditioning before it ships.

Frequently Asked Questions

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

Yes, rush service is available for an additional fee. Let us know your deadline when you submit your request.

Yes. Photos of the nameplate and overall unit let us begin identification before it arrives, which speeds up the process.

If the main housing or board is intact, repair is usually the better option. We can restore most units to working condition with tested parts.

We regularly work on units with missing labels. Send us a few images and any visible part numbers, and we can usually match it.

Experience and Warranty

As a specialized repair facility, we have dedicated test equipment that general-purpose shops don’t. That means your MOOG 631-346C-4 gets serviced by people who work on these units regularly.

Repair Process

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.

  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • 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.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.

Leak and Performance Testing

With thirteen in-house 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 functional testing verifies proper functionality.

Technical Specifications

Every MOOG 631-346C-4 we service is tested under typical applications. Our diagnostics verify performance against published specifications. Technical diagrams and Specification sheets are available for purchase upon request.

Repair, Rebuild and Exchange Options

Beyond standard sales, we offer specialized reconditioning for your MOOG 631-346C-4 unit. Our teardown process includes internal inspection and spool evaluation, using only replacement replacement components.

Turnaround and Shipping

As a dedicated source for MOOG 631-346C-4 services, NC Servo Tech targets quick resolution with typical lead times of 1 to 2 weeks. Benefit from our direct access to our technicians to keep your systems running smoothly.

Product Data Available

For documented insights into your MOOG 631-346C-4, we can provide access to service logs and repair records. This transparency offers you compliance assurance and aids in long-term maintenance planning.

Maintenance Tips

  • Monitor operating temperatures to identify potential issues before failure occurs.
  • Keep a spare MOOG 631-346C-4 on hand to minimize downtime during unplanned failures.
  • Flush the hydraulic system after any major repair to remove debris before reinstalling the MOOG 631-346C-4.

Schedule Your MOOG 631-346C-4 Service Today

Request pricing, availability, and turnaround for your MOOG 631-346C-4. NC Servo Tech provides experienced 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.