Key Details

The MOOG D631-752C is one of many models we routinely service. Our process includes disassembly, cleaning, and reassembly using reliable components.

About Our Shop

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

Frequently Asked Questions

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

You’ll hear from us either way. If it’s not repairable, we’ll return the unit and provide our findings.

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

In most cases, repair costs less than replacement, especially for legacy or OEM-specific models. We evaluate every unit and let you know what makes sense.

Inspection and root-cause analysis are part of our standard process. We identify the issue before starting any repair work.

Disassembly and Rebuild Procedure

Once a valve arrives, we tear it down fully, examine key surfaces, and replace worn or damaged parts using components we stock in-house, cutting out OEM lead times.

  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • 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.
  • Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.

Hydraulic Testing Process

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 consistent performance.

Repair, Rebuild and Exchange Options

Beyond standard maintenance, we offer specialized repairs for your MOOG D631-752C unit. Our disassembly process includes internal inspection and bench testing, using only new replacement components.

Parts and Inventory

With more than 17,000 valve units in inventory, we can often provide faster turnaround by sourcing parts in-house rather than waiting on OEM lead times.

Maintenance Tips

  • Document all maintenance activities to track performance trends over time.
  • Use only manufacturer-recommended hydraulic fluids to protect internal valve surfaces.
  • Monitor operating temperatures to identify potential issues before failure occurs.

Let Us Repair Your MOOG D631-752C

Request pricing, availability, and turnaround for your MOOG D631-752C. NC Servo Technology provides experienced repair with a 1-year warranty. Contact us to request 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.