Repair Procedure

We specialize in the overhaul of your MOOG D631-336CA, including the replacement of all necessary gaskets and worn components.

Key Details

At NC Servo Technology, our shop is equipped to service the MOOG D631-336CA. We use a consistent process to restore each unit to working condition.

Frequently Asked Questions

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

Helpful but not required. If you can photograph the label, connectors, and overall unit, it gives our team a head start.

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

Yes. We diagnose first, then provide a repair recommendation with our findings. No work begins without your approval.

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

About Our Shop

NC Servo Technology specializes in both valves and electronic controls, which lets us operate without the delays of OEM service centers.

Specializing in MOOG D631-336CA servo valve technology for over five decades

Repair Process

Our team disassembles each valve to assess internal wear. After ultrasonic cleaning, we install replacements and reassemble and verify operation.

  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.
  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.

Hydraulic Testing Process

NC Servo Technology operates our 13-stand test facility, including setups for proportional and servo valves. Every valve goes through performance and leak testing using standard test fluids to match your operational needs. Our operational testing verifies proper functionality.

Additional MOOG D631-336CA Services

Beyond standard refurbishment, we offer specialized overhauls for your MOOG D631-336CA unit. Our overhaul process includes internal inspection and seal replacement, using only new replacement components.

Stock Availability

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.

Data Sheets & Reports

For documented insights into your MOOG D631-336CA, we can provide access to service logs and reports. This transparency offers you record-keeping and aids in long-term maintenance planning.

Maintenance Tips

  • Keep a spare MOOG D631-336CA on hand to minimize downtime during unplanned failures.
  • Inspect MOOG D631-336CA seals regularly to prevent leaks and maintain performance.
  • Conduct thorough visual inspections for wear or leaks during routine maintenance.

Need Your MOOG D631-336CA Back Online?

Request pricing, availability, and turnaround for your MOOG D631-336CA. NC Servo Technology provides experienced 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.