How We Repair Your Unit

We specialize in the overhaul of your MOOG D635-606C, including the replacement of all necessary seals and worn components.

Why Repair With NC Servo

As a specialized repair facility, we have dedicated test equipment that general-purpose shops don’t. That means your MOOG D635-606C gets serviced by people who work on these units regularly.

One-year warranty on all MOOG D635-606C valve repairs

Frequently Asked Questions

If the main housing or board is intact, repair is usually the better option. We can restore most units to working condition with tested parts.

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

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

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

Yes, rush service is available for an additional fee. Let us know your deadline when you submit your request.

Disassembly and Rebuild Procedure

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.

  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Teardown: Every valve is disassembled for internal inspection.
  • 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.

Leak and Performance 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 operational testing verifies consistent performance.

Performance Data

Every MOOG D635-606C we service is tested under typical applications. Our diagnostics verify performance against published specifications. Cycle life data and Specification sheets are available for purchase upon request.

Additional MOOG D635-606C Services

Beyond standard maintenance, we offer specialized repairs for your MOOG D635-606C unit. Our overhaul process includes seal replacement and mineral bath cleaning, using only new replacement components.

Turnaround and Shipping

As a specialist for MOOG D635-606C services, NC Servo Technology targets quick resolution with typical lead times of 1 to 3 weeks. Benefit from our dedicated support team to keep your systems running smoothly.

Data Sheets & Reports

For transparent insights into your MOOG D635-606C, we can provide access to repair records and reports. This transparency offers you compliance assurance and aids in long-term maintenance planning.

Maintenance Tips

  • Keep a spare MOOG D635-606C on hand to minimize downtime during unplanned failures.
  • Flush the hydraulic system after any major repair to remove debris before reinstalling the MOOG D635-606C.
  • Monitor operating temperatures to identify potential issues before failure occurs.

Get an Expert Repair for Your MOOG D635-606C

Request pricing, availability, and turnaround for your MOOG D635-606C. NC Servo Technology provides warrantied repair with a 1-year warranty. Contact us to schedule your repair.

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NC Servo Technology 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.