Teardown and Rebuild Steps

We specialize in the overhaul of your REXROTH 4WE6J53/AG24N9K4, including the replacement of all necessary gaskets and worn components.

Why Repair With NC Servo

Unlike OEM shops, we use our own inventory to handle most rebuilds. That cuts down on lead time and gets your unit back faster.

Specializing in REXROTH 4WE6J53/AG24N9K4 servo valve technology for over five decades

Frequently Asked Questions

Yes. Send us photos of the unit from multiple angles. Our team has serviced thousands of models and can often ID them visually.

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.

We confirm next steps with you if a unit can’t be rebuilt. No work proceeds without your approval.

We give you a straight assessment after inspection. If repair doesn’t make sense, we’ll let you know and discuss alternatives.

Rebuild Steps

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

  • Seal and Gasket Replacement: Worn seals and gaskets are replaced with new components during every rebuild.
  • Complete Disassembly: The unit is disassembled and all parts are laid out for individual inspection.
  • In-House Parts Sourcing: Many repairs use components sourced from our inventory of 17,000+ units.
  • Cleaning: Units go through a mineral bath, with ultrasonic cleaning used for delicate internals.

Leak and Performance Testing

NC Servo Technology operates our 13-stand test facility, including setups for proportional and servo valves. Every valve goes through performance and leak testing using a range of hydraulic fluids like Skydrol and MIL-5606. Our pre-shipment testing verifies proper functionality.

Parts and Inventory

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

  • Keep a spare REXROTH 4WE6J53/AG24N9K4 on hand to minimize downtime during unplanned failures.
  • Check system pressure regularly to verify it stays within the REXROTH 4WE6J53/AG24N9K4 rated operating range.
  • Store spare REXROTH 4WE6J53/AG24N9K4 valves in a clean, dry environment to prevent corrosion and contamination.

Get a Free Evaluation for Your REXROTH 4WE6J53/AG24N9K4

Request pricing, availability, and turnaround for your REXROTH 4WE6J53/AG24N9K4. NC Servo Technology provides independent repair with a 1-year warranty. Contact us to request 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 REXROTH or any original equipment manufacturer (OEM), nor do we claim to be a REXROTH 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.