Repair Procedure

Each MOOG 631-734C undergoes reconditioning — disassembly, parts replacement, reassembly, and bench testing before shipment.

Independent Repair Facility

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

Frequently Asked Questions

We confirm next steps with you if a unit can’t be rebuilt. No work proceeds without your approval.

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

Turnaround time varies by model and condition. Contact us for a timeline specific to your unit.

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

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

Repair Process

We rebuild every valve from the inside out: cleaning, inspection, parts replacement, reassembly, and bench testing.

  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Final Performance Verification: After reassembly, each valve undergoes bench-testing against published performance specs.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • Teardown: Every valve is disassembled for internal inspection.

Leak and Performance Testing

NC Servo operates over a dozen dedicated flow 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.

Repair, Rebuild and Exchange Options

Beyond standard maintenance, we offer specialized repairs for your MOOG 631-734C unit. Our disassembly process includes spool evaluation and flow verification, using only replacement replacement components.

Turnaround and Shipping

As a dedicated source for MOOG 631-734C services, NC Servo 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.

Maintenance Tips

  • Check valve alignment carefully to prevent undue stress on internal components.
  • Use only manufacturer-recommended hydraulic fluids to protect internal valve surfaces.
  • Keep a spare MOOG 631-734C on hand to minimize downtime during unplanned failures.

Request a Quote for Your MOOG 631-734C Maintenance

Request pricing, availability, and turnaround for your MOOG 631-734C. NC Servo provides independent repair with a 1-year warranty. Contact us to start 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.