Overview

Whether the issue is age, wear, or contamination, the Moog D661-4651 can often be fully restored. NC Servo Technology applies the same structured approach to every rebuild.

Trusted By Professionals

We’ve got the parts and the experience. We’re built to move fast, restoring most units with stocked components to avoid lengthy delays.

Frequently Asked Questions

Valve Refurbishment Steps

Our experienced team completely disassembles each valve to assess internal wear conditions. After ultrasonic cleaning, we install high-grade replacement components and reassemble to exacting standards.

• Meticulous Cleaning: All parts undergo an ultrasonic cleaning process to remove contaminants before inspection.
• In-House Parts Sourcing: Many repairs use reliable components sourced from our extensive inventory of existing units.
• Final Performance Verification: After reassembly, each valve is bench-tested to ensure it meets or exceeds original performance specifications.
• Rigorous Testing: The reassembled unit undergoes rigorous leak and pressure testing to verify it performs to specification.

Troubleshooting & Verification

NC Servo Technology operates thirteen state-of-the-art test stands, including setups specifically for proportional and servo valves. Every valve goes through performance and leak testing using standard test fluids to match your operational needs. Our functional testing ensures guaranteed reliability.

Maintenance Tips

• Conduct visual inspections for wear or leaks.
• Perform comprehensive fluid analysis to detect contamination early and prevent system damage.
• Replace inline filters according to maintenance schedules to maintain proper flow rates.