Product Snapshot

At NC Servo, our shop is fully equipped to service the Moog 641-229B. We use a consistent, detailed process to ensure every unit is restored to reliable, peak performance.

Comprehensive Service Breakdown

Our comprehensive repair process for the Moog 641-229B begins with a full teardown and precision cleaning to assess all components.

Frequently Asked Questions

What Sets Us Apart

NC Servo operates independently, so we’re not tied to manufacturer delays or restrictions. That means more flexibility when your system is down and needs immediate attention.

Restoration Workflow

The repair process for the Moog 641-229B includes full disassembly, diagnostic review, and replacement of failed seals, spools, or other elements. Final assembly includes leak and function testing.

• Final Performance Verification: After reassembly, each valve is bench-tested to ensure it meets or exceeds original performance specifications.
• In-House Parts Sourcing: Many repairs use reliable components sourced from our extensive inventory of existing units.
• Complete Disassembly: The unit is fully disassembled, and all parts are laid out for individual inspection.
• Meticulous Cleaning: All parts undergo an ultrasonic cleaning process to remove contaminants before inspection.

Testing & Diagnostics

NC Servo operates thirteen state-of-the-art test stands, including specialized setups specifically designed for proportional and servo valves. Every valve goes through comprehensive performance and leak testing using a range of hydraulic fluids like Skydrol and MIL-5606. Our pre-shipment testing ensures guaranteed reliability.

Maintenance Tips

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