About This Valve

We handle a wide range of Moog 931C units with care and consistency. Each unit receives detailed inspection, internal cleaning, and full reconditioning.

Our Approach to Repair

Each Moog 931C undergoes a meticulous reconditioning, starting with a full disassembly and ending with rigorous performance testing.

Frequently Asked Questions

Why Work With Us

Unlike OEM service centers, we use our own inventory to handle most rebuilds. That cuts down on downtime and helps you get back up and running sooner.

30+ years of expertise in Moog 931C Valve Repair

Restoration Workflow

Each valve undergoes a complete teardown process to expose wear patterns and buildup. After cleaning every surface thoroughly, we replace damaged parts and reassemble the unit to exact specifications.

• Final Performance Verification: After reassembly, each valve undergoes bench-testing to ensure it meets or exceeds OEM performance specifications.
• Rigorous Testing: The reassembled unit undergoes rigorous leak and pressure testing to verify it performs to specification.
• In-House Parts Sourcing: Many repairs use reliable components sourced from our extensive inventory of existing units.
• Thorough Decontamination: Every component is put through a deep cleaning process to remove grime and buildup.

Testing & Diagnostics

NC Servo Technology operates over a dozen dedicated flow test stands, including setups specifically 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 ensures consistent performance.

Maintenance Tips

• Inspect Moog 931C seals regularly to prevent leaks.
• Conduct thorough visual inspections for wear or leaks during routine maintenance.
• Replace inline filters per maintenance schedules.