Teardown and Rebuild Steps

Each MOOG D631-335CE undergoes reconditioning — disassembly, parts replacement, reassembly, and bench testing before shipment.

Valve Overview

We’ve serviced hundreds of MOOG D631-335CE units over the years. Each one goes through the same controlled teardown, parts replacement, and testing process.

Frequently Asked Questions

Send the unit in whatever condition it’s in. We clean everything during teardown before inspection begins.

If a unit is beyond repair, we explain why and can discuss replacement or exchange options.

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

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

Warranty coverage of our standard 1-year parts and labor warranty is included with every repair we complete.

About Our Shop

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

One-year warranty on all MOOG D631-335CE valve repairs

How We Rebuild This Valve

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

  • 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.
  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.

Testing and Bench Verification

We carry out full diagnostics on every valve, including flow gain, leakage, pressure shift, and frequency testing. Our test facility supports performance logging and report generation. Our pre-shipment testing verifies spec-level operation.

Additional MOOG D631-335CE Services

Beyond standard sales, we offer specialized reconditioning for your MOOG D631-335CE unit. Our overhaul process includes leak testing and flow verification, using only new replacement components.

Turnaround and Shipping

As a dedicated source for MOOG D631-335CE services, NC Servo Technology targets quick resolution with typical lead times of 2 to 3 weeks. Benefit from our direct access to our technicians to keep your systems running smoothly.

Maintenance Tips

  • Keep hydraulic fluid clean and at proper levels for consistent valve operation.
  • Keep a spare MOOG D631-335CE on hand to minimize downtime during unplanned failures.
  • Replace inline filters according to maintenance schedules to maintain proper flow rates.

Let Us Repair Your MOOG D631-335CE

Request pricing, availability, and turnaround for your MOOG D631-335CE. NC Servo Technology provides warrantied repair with a 1-year warranty. Contact us to set up 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.