Valve Overview

We’ve serviced hundreds of MOOG 73-103 units over the years. Each one goes through the same controlled teardown, parts replacement, and testing process.

Repair Procedure

Our process involves a teardown of your MOOG 73-103, ultrasonic cleaning, and reassembly with quality parts to restore operation.

Frequently Asked Questions

We recommend sending pictures, especially if the model number is unclear or there is visible damage.

All repairs come with a 12-month warranty on parts and labor. Contact us for specifics on your unit.

Send the unit in whatever condition it’s in. We clean everything during teardown before inspection begins.

Send it in for evaluation. We’ll inspect it and give you a repair-vs-replace recommendation based on the actual condition of the unit.

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

Experience and Warranty

NC Servo specializes in both valves and electronic controls, which lets us operate without the delays of OEM service centers.

In-house parts inventory eliminates OEM lead time delays for MOOG 73-103

How We Rebuild This Valve

The repair process for the MOOG 73-103 includes 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 against published performance specifications.
  • 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.
  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.

Leak and Performance Testing

Each MOOG 73-103 is tested on a dedicated flow bench before it ships. We check pressure, flow, leakage, and response characteristics against published specifications. Our performance testing verifies proper functionality.

Repair, Rebuild and Exchange Options

Beyond standard sales, we offer specialized repairs for your MOOG 73-103 unit. Our overhaul process includes mineral bath cleaning and seal replacement, using only replacement replacement components.

Maintenance Tips

  • Check valve alignment carefully to prevent undue stress on internal components.
  • Keep hydraulic fluid clean and at proper levels for consistent valve operation.
  • Schedule preventive maintenance intervals based on duty cycle, not just calendar time.

Start Your MOOG 73-103 Reconditioning Process

Request pricing, availability, and turnaround for your MOOG 73-103. NC Servo provides independent repair with a 1-year warranty. Contact us to set up your repair.

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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.