Inspection and Repair Process

We specialize in the overhaul of your MOOG D641-351, including the replacement of all necessary gaskets and worn components.

Why Repair With NC Servo

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

In-house parts inventory eliminates OEM lead time delays for MOOG D641-351

Frequently Asked Questions

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.

Even if the tag is worn off, we can often match the unit based on shape, size, and internal configuration.

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

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

Rush and priority service options exist. Availability depends on current workload, so contact us early.

How We Rebuild This Valve

The process begins with disassembly and visual evaluation. We then clean, replace worn pieces, and reassemble the valve to restore its function.

  • Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.

Hydraulic Testing Process

Each MOOG D641-351 is tested on a dedicated flow bench before it ships. We check pressure, flow, leakage, and response characteristics against published specifications. Our functional testing verifies consistent performance.

Technical Specifications

Every MOOG D641-351 we service is tested under operating environments. Our diagnostics verify performance against published specifications. Specification sheets and Cycle life data are available for purchase upon request.

Additional MOOG D641-351 Services

Beyond standard maintenance, we offer specialized reconditioning for your MOOG D641-351 unit. Our disassembly process includes mineral bath cleaning and internal inspection, using only replacement replacement components.

Turnaround and Shipping

As a dedicated source for MOOG D641-351 services, NC Servo Technology 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.

In-House Inventory for MOOG D641-351

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

  • Inspect MOOG D641-351 seals regularly to prevent leaks and maintain performance.
  • Document all maintenance activities to track performance trends over time.
  • Schedule preventive maintenance intervals based on duty cycle, not just calendar time.

Need Your MOOG D641-351 Back Online?

Request pricing, availability, and turnaround for your MOOG D641-351. NC Servo Technology provides independent repair with a 1-year warranty. Contact us to start your repair.

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NC Servo Technology 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.