How We Repair Your Unit

We specialize in the overhaul of your MOOG D662-4348K, including the replacement of all necessary gaskets and worn components.

About Our Shop

Unlike OEM shops, we use our own inventory to handle most rebuilds. That cuts down on lead time and gets your unit back faster.

One-year warranty on all MOOG D662-4348K valve repairs

Frequently Asked Questions

Yes. If the unit can’t be repaired, we contact you with options before doing anything further.

No cleaning required. Our repair process includes disassembly and cleaning of all components.

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

Even if the tag is worn off, we can often match the unit based on shape, size, and internal configuration.

Standard turnaround is 1-3 weeks. Rush options are available for time-sensitive situations.

Repair Process

The process begins with disassembly and visual evaluation. We then clean, replace worn pieces, and reassemble the valve to restore its function.

  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
  • Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.

Testing and Bench Verification

NC Servo operates our 13-stand test facility, including setups for proportional and servo valves. Every valve goes through performance and leak testing using industry-standard fluids including MIL-5606 and Skydrol. Our functional testing verifies spec-level operation.

Additional MOOG D662-4348K Services

Beyond standard sales, we offer specialized reconditioning for your MOOG D662-4348K unit. Our teardown process includes reassembly to spec and mineral bath cleaning, using only new replacement components.

Maintenance Tips

  • Keep hydraulic fluid clean and at proper levels for consistent valve operation.
  • Store spare MOOG D662-4348K valves in a clean, dry environment to prevent corrosion and contamination.
  • Schedule preventive maintenance intervals based on duty cycle, not just calendar time.

Get a Free Evaluation for Your MOOG D662-4348K

Request pricing, availability, and turnaround for your MOOG D662-4348K. NC Servo provides independent repair with a 1-year warranty. Contact us to schedule your repair.

Request a Quote View All MOOG Products Shop MOOG Inventory

NC Servo 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.