Inspection and Repair Process

We specialize in the overhaul of your MOOG D691-2090D, including the replacement of all necessary gaskets and worn components.

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.

17,000+ valves in stock including MOOG D691-2090D exchange units

Frequently Asked Questions

Expedited options are available depending on current scheduling. Contact us to discuss your timeline.

Standard turnaround is 1-3 weeks. Rush options are available for time-sensitive situations.

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

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

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

How We Rebuild This Valve

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

  • 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.
  • 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.

Hydraulic Testing Process

NC Servo Technology operates thirteen in-house test stands, 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.

Lead Times and Support

As a focused repair facility for MOOG D691-2090D services, NC Servo Technology targets quick resolution with typical lead times of 1 to 3 weeks. Benefit from our direct access to our technicians to keep your systems running smoothly.

Product Data Available

For transparent insights into your MOOG D691-2090D, we can provide access to reports and service logs. This transparency offers you record-keeping and aids in long-term maintenance planning.

Maintenance Tips

  • Flush the hydraulic system after any major repair to remove debris before reinstalling the MOOG D691-2090D.
  • Check system pressure regularly to verify it stays within the MOOG D691-2090D rated operating range.
  • Perform fluid analysis to detect contamination early and prevent system damage.

Need Your MOOG D691-2090D Back Online?

Request pricing, availability, and turnaround for your MOOG D691-2090D. NC Servo Technology provides experienced repair with a 1-year warranty. Contact us to schedule 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.