About This Valve

At NC Servo Technology, our shop is fully equipped to service the Moog D642Z528A. We use a consistent, detailed process to ensure every unit is restored to reliable, peak performance.

The NC Servo Tech Advantage

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

Frequently Asked Questions

Service Procedure

We rebuild every valve from the inside out, starting with cleaning and inspection, followed by new parts installation, careful reassembly, and rigorous bench testing.

• Final Performance Verification: After reassembly, each valve is bench-tested to ensure it meets or exceeds original performance specifications.
• Thorough Decontamination: Every component is put through a deep cleaning process to remove grime and buildup.
• 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.

Diagnostic Evaluation

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 pre-shipment testing ensures guaranteed reliability.

Maintenance Tips

• Perform comprehensive fluid analysis to detect contamination early and prevent system damage.
• Replace inline filters per maintenance schedules.
• Check valve alignment to prevent undue stress.