How We Repair Your Unit

Our repair process for the MOOG D663-344C begins with teardown and mineral bath cleaning to assess all components.

Why Repair With NC Servo

We’ve built our shop around one thing: industrial repair. With decades of hands-on experience and deep product knowledge, we deliver consistent results.

Frequently Asked Questions

No cleaning required. Our repair process includes disassembly and cleaning of all components.

Part of our intake includes troubleshooting to determine the failure point. We report findings before proceeding.

Yes, our standard 1-year parts and labor warranty is standard on all repairs. Details are provided with your service report.

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

Most repairs are completed within 1 to 3 weeks, depending on workload and parts availability.

Disassembly and Rebuild Procedure

Each valve goes through teardown to expose wear and buildup. After mineral bath cleaning, we replace damaged parts and reassemble the unit to spec.

  • 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.
  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.

Hydraulic Testing Process

Each MOOG D663-344C 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 spec-level operation.

Common Applications

Our trusted repair services for the MOOG D663-344C are trusted across various sectors including Aerospace, Industrial Machinery, and Marine. We understand the unique demands of valves in these environments.

MOOG D663-344C Specifications

Every MOOG D663-344C 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.

Additional MOOG D663-344C Services

Beyond standard refurbishment, we offer specialized reconditioning for your MOOG D663-344C unit. Our overhaul process includes seal replacement and spool evaluation, using only replacement replacement components.

Maintenance Tips

  • Replace inline filters according to maintenance schedules to maintain proper flow rates.
  • Schedule preventive maintenance intervals based on duty cycle, not just calendar time.
  • Document all maintenance activities to track performance trends over time.

Schedule Your MOOG D663-344C Service Today

Request pricing, availability, and turnaround for your MOOG D663-344C. NC Servo Technology provides hands-on repair with a 1-year warranty. Contact us to set up your repair.

Request a Quote View All MOOG Products Shop MOOG Inventory

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.