About This Unit

Whether the issue is age, wear, or contamination, the MOOG J662-120 can often be restored. NC Servo Tech applies the same structured approach to every rebuild.

Independent Repair Facility

We’ve built our shop around one thing: industrial repair. With decades of hands-on experience and deep product knowledge, we deliver consistent results.

Specializing in MOOG J662-120 servo valve technology for over five decades

Frequently Asked Questions

Yes, a one-year warranty is standard on all repairs. Details are provided with your service report.

Not required, but removing excess oil or loose debris before packing helps keep things clean in transit.

Yes. We diagnose first, then provide a repair recommendation with our findings. No work begins without your approval.

Photos help us confirm the unit type and speed up intake. You can upload them through our quote request form.

We confirm next steps with you if a unit can’t be rebuilt. No work proceeds without your approval.

How We Rebuild This Valve

We disassemble every valve, inspect it inside and out, and clean all moving parts. Components that fail inspection are swapped out before the valve is rebuilt and tested.

  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • Leak and Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.

Diagnostic Testing

We carry out full diagnostics on every valve, including flow gain, leakage, pressure shift, and frequency testing. Our test facility supports performance logging and report generation. Our pre-shipment testing verifies consistent performance.

Where the MOOG J662-120 Is Used

Our trusted repair services for the MOOG J662-120 are trusted across various sectors including Construction, Automotive, and Plastics & Injection Molding. We understand the unique demands of valves in these environments.

Parts and Inventory

With more than 17,000 valve units in inventory, we can often provide faster turnaround by sourcing parts in-house rather than waiting on OEM lead times.

Maintenance Tips

  • Keep a spare MOOG J662-120 on hand to minimize downtime during unplanned failures.
  • Use only manufacturer-recommended hydraulic fluids to protect internal valve surfaces.
  • Inspect MOOG J662-120 seals regularly to prevent leaks and maintain performance.

Need Your MOOG J662-120 Back Online?

Request pricing, availability, and turnaround for your MOOG J662-120. NC Servo Tech provides independent repair with a 1-year warranty. Contact us to schedule your repair.

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NC Servo Tech 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.