MOOG D634-318C
Every minute your MOOG D634-318C is down costs your operation. We offer expedited repair turnaround and exchange units to keep production moving.
Representative image — actual product may differ
Inspection and Repair Process
We specialize in the overhaul of your MOOG D634-318C, including the replacement of all necessary seals and worn 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.
Frequently Asked Questions
Yes, our standard 1-year parts and labor warranty is standard on all repairs. Details are provided with your service report.
If a unit is beyond repair, we explain why and can discuss replacement or exchange options.
Helpful but not required. If you can photograph the label, connectors, and overall unit, it gives our team a head start.
No cleaning required. Our repair process includes disassembly and cleaning of all components.
Rush and priority service options exist. Availability depends on current workload, so contact us early.
Disassembly and Rebuild Procedure
Each valve goes through teardown to expose wear and buildup. After mineral bath cleaning, we replace damaged parts and reassemble the unit to spec.
- Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.
- 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.
Leak and Performance Testing
NC Servo operates thirteen in-house test stands, 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 functional testing verifies spec-level operation.
Repair, Rebuild and Exchange Options
Beyond standard refurbishment, we offer specialized reconditioning for your MOOG D634-318C unit. Our disassembly process includes seal replacement and reassembly to spec, using only replacement replacement components.
Maintenance Tips
- Use only manufacturer-recommended hydraulic fluids to protect internal valve surfaces.
- Schedule preventive maintenance intervals based on duty cycle, not just calendar time.
- Keep a spare MOOG D634-318C on hand to minimize downtime during unplanned failures.
Schedule Your MOOG D634-318C Service Today
Request pricing, availability, and turnaround for your MOOG D634-318C. NC Servo provides independent repair with a 1-year warranty. Contact us to request your repair.
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.