Repair Procedure

Each MOOG 631F175F undergoes reconditioning — disassembly, parts replacement, reassembly, and bench testing before shipment.

Why Repair With NC Servo

NC Servo 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 631F175F valve repairs

Frequently Asked Questions

Turnaround time varies by model and condition. Contact us for a timeline specific to your unit.

Yes, a 12-month warranty on parts and labor is standard on all repairs. Details are provided with your service report.

Inspection and root-cause analysis are part of our standard process. We identify the issue before starting any repair work.

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.

How We Rebuild This Valve

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

  • Final Performance Verification: After reassembly, each valve is bench-tested against published performance specifications.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.

Diagnostic Testing

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 operational testing verifies proper functionality.

Performance Data

Every MOOG 631F175F we service is tested under operating environments. Our diagnostics verify performance against published specifications. Performance data and Cycle life data are available for purchase upon request.

Additional MOOG 631F175F Services

Beyond standard sales, we offer specialized overhauls for your MOOG 631F175F unit. Our teardown process includes disassembly and internal inspection, using only new replacement components.

Lead Times and Support

As a specialist for MOOG 631F175F services, NC Servo targets quick resolution with typical lead times of 1 to 2 weeks. Benefit from our responsive technical support to keep your systems running smoothly.

In-House Inventory for MOOG 631F175F

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

  • 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 631F175F.

Need Your MOOG 631F175F Back Online?

Request pricing, availability, and turnaround for your MOOG 631F175F. NC Servo provides warrantied repair with a 1-year warranty. Contact us to set up 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.