Repair Procedure

Our process involves a teardown of your MOOG D634-1023, mineral bath cleaning, and reassembly with quality parts to restore operation.

Independent Repair Facility

NC Servo Tech operates independently, so we’re not tied to manufacturer delays or restrictions. That means more flexibility when your system is down.

One-year warranty on all MOOG D634-1023 valve repairs

Frequently Asked Questions

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

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

Most repairs are completed within 1 to 3 weeks, depending on workload and parts availability.

Yes. Our repairs include a 12-month warranty on parts and labor covering parts and labor.

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.

Disassembly and Rebuild Procedure

We rebuild every valve from the inside out: cleaning, inspection, parts replacement, reassembly, and bench testing.

  • Final Performance Verification: After reassembly, each valve undergoes bench-testing against published performance specs.
  • Teardown: Every valve is disassembled for internal inspection.
  • 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.

Hydraulic Testing Process

NC Servo Tech operates our 13-stand test facility, including setups for proportional and servo valves. Every valve goes through performance and leak testing using standard test fluids to match your operational needs. Our operational testing verifies proper functionality.

Common Applications

Our professional repair services for the MOOG D634-1023 are trusted across various sectors including Industrial Machinery, Paper & Pulp, and Manufacturing. We understand the unique demands of valves in these environments.

Repair, Rebuild and Exchange Options

Beyond standard refurbishment, we offer specialized repairs for your MOOG D634-1023 unit. Our teardown process includes pressure testing and flow verification, using only new replacement components.

In-House Inventory for MOOG D634-1023

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.

Product Data Available

For documented insights into your MOOG D634-1023, we can provide access to service logs and reports. This transparency offers you compliance assurance and aids in long-term maintenance planning.

Maintenance Tips

  • Document all maintenance activities to track performance trends over time.
  • Schedule preventive maintenance intervals based on duty cycle, not just calendar time.
  • Flush the hydraulic system after any major repair to remove debris before reinstalling the MOOG D634-1023.

Schedule Your MOOG D634-1023 Service Today

Request pricing, availability, and turnaround for your MOOG D634-1023. NC Servo Tech provides hands-on repair with a 1-year warranty. Contact us to set up 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.