Repair Procedure

Our repair process for the MOOG 631-734C1 begins with teardown and ultrasonic cleaning to assess all components.

Independent Repair Facility

We’ve built our shop around one thing: industrial repair. With decades of hands-on experience and deep product knowledge, we deliver consistent results.

17,000+ valves in stock including MOOG 631-734C1 exchange units

Frequently Asked Questions

Yes. Every unit goes through diagnostic testing and we provide an assessment before moving forward.

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.

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

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.

How We Rebuild This Valve

Every MOOG 631-734C1 gets a controlled teardown on our bench. We document condition, replace what’s needed, and reassemble to proper operating condition.

  • 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 Pressure Testing: The reassembled unit is leak-tested and pressure-tested to verify it meets published specs.
  • Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.

Hydraulic Testing Process

With thirteen in-house test stands and a Hagenbush proportional valve system, we verify flow curves, hysteresis, frequency response, and more. Performance reports and graphs are available for purchase on request. Our performance testing verifies proper functionality.

Performance Data

Every MOOG 631-734C1 we service is tested under typical applications. Our diagnostics verify performance against published specifications. Cycle life data and Technical diagrams are available for purchase upon request.

Additional MOOG 631-734C1 Services

Beyond standard sales, we offer specialized reconditioning for your MOOG 631-734C1 unit. Our teardown process includes internal inspection and mineral bath cleaning, using only new replacement components.

Lead Times and Support

As a specialist for MOOG 631-734C1 services, NC Servo Tech targets quick resolution with typical lead times of 1 to 2 weeks. Benefit from our dedicated support team to keep your systems running smoothly.

Parts and Inventory

With over 17,000 valves in stock, we can often provide faster turnaround by sourcing parts in-house rather than waiting on OEM lead times.

Product Data Available

For transparent insights into your MOOG 631-734C1, we can provide access to service logs and reports. This transparency offers you peace of mind and aids in long-term maintenance planning.

Maintenance Tips

  • Check valve alignment carefully to prevent undue stress on internal components.
  • Use only manufacturer-recommended hydraulic fluids to protect internal valve surfaces.
  • Perform fluid analysis to detect contamination early and prevent system damage.

Request a Quote for Your MOOG 631-734C1 Maintenance

Request pricing, availability, and turnaround for your MOOG 631-734C1. NC Servo Tech provides experienced repair with a 1-year warranty. Contact us to request 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.