Non-Serviceable Hydrostatic Transmissions: Can They Be Repaired?

Many manufacturers label hydrostatic transmissions as 'non-serviceable,' but that doesn't always mean they're beyond repair. With over 100 years of combined experience, Hydrostatic Transmission Service specializes in rebuilding, testing, and restoring hydrostatic drives, pumps, and motors across dozens of major brands—giving your equipment a second life and minimizing costly downtime.

Technician rebuilding a hydrostatic transmission pump in a professional repair facility

Our Hydrostatic Transmission Repair Services

From full rebuilds to parts supply and exchange programs, we restore hydrostatic systems across all major brands.

Drives, Pumps & Motors Rebuild

Complete rebuild, testing, calibration, and pressure adjustment of hydrostatic drives, pumps, and motors. Each unit is reconditioned to manufacturer specifications and ships with a 1-year warranty.

Exchange Program

Minimize equipment downtime with our short-time exchange program. We ship a quality-tested, warranted rebuilt unit quickly so your operation stays running without waiting for a full rebuild turnaround.

Hydrostatic Parts Supply

We supply new, used, and hard-to-find hydrostatic and hydraulic parts internationally for brands including Parker, Eaton, Rexroth, Kawasaki, Danfoss, Vickers, and more.

Brand-Specific Repairs

Specialized rebuild and calibration services for leading brands: Rexroth, Danfoss, Sundstrand, Eaton, Kawasaki, Vickers, Parker, Komatsu, Hydromatik, Uchida, Brueninghaus, and Cessna.

Installation Advice Service

Our trained technicians provide expert installation guidance to help you correctly install and maintain your rebuilt or exchanged hydrostatic drive, pump, or motor for optimal long-term performance.

Purchase Program

We pay top price for surplus hydraulic and hydrostatic cores, pumps, motors, and parts from brands like Sundstrand, Eaton, Kawasaki, Rexroth, and many others. Turn idle inventory into value.

Beyond the Label

Expert Rebuilds for Units Labeled 'Non-Serviceable'

When an OEM stamps 'non-serviceable' on a hydrostatic transmission, it typically reflects a factory policy—not a physical impossibility. At Hydrostatic Transmission Service, our technicians routinely disassemble, recondition, and rebuild units that other shops won't touch. Using a Statistical Process Control System and strict manufacturer-specification benchmarks, we restore hydraulic integrity, replace all seals and wear components, and validate performance through rigorous testing before any unit leaves our Tupelo, MS facility.

Hydrostatic transmission unit undergoing precision rebuild and testing on a hydraulic test bench
Trusted Worldwide

Customer Success Stories

See how we've helped industrial, agricultural, and construction operators restore equipment and reduce costly downtime.

"HTS rebuilt our Kawasaki hydrostatic transmission when everyone said it was done. Their expertise with K3V series components and meticulous testing to manufacturer specs got us back operational in days. Outstanding quality and reliability."

Marcus Chen

"We had what we thought was a non serviceable hydrostatic transmission from our John Deere skidsteer. HTS not only repaired it but installed it themselves. Their technicians walked us through everything. Saved us thousands versus replacement."

Robert Sullivan

"As a distributor, we rely on HTS for the Exchange Program to minimize downtime for our clients. Their short-time turnaround on quality-assured rebuilt units is unmatched. We've partnered with them for over a decade."

Jennifer Osaka

"Our Rexroth pump failed mid-project. HTS turned it around in 48 hours with their short-time exchange program. The rebuilt A4VG arrived tested, warranted, and ready to install. Couldn't ask for faster service."

David Patterson

"We sold HTS our surplus Uchida cores through their Purchase Program and received top-dollar pricing. Their buyer was knowledgeable and transparent. Helped us clear inventory and fund new equipment purchases efficiently."

Angela Morrison

"HTS has been our trusted partner for Vickers motor rebuilds for five years. Their technicians are held accountable for quality, and it shows. Every unit arrives tested to specification with a solid warranty backing."

Thomas Wright

"What made us choose HTS: their non serviceable hydrostatic transmission solutions actually work. They have statistical process control systems comparing every rebuild to OEM specs. That level of precision is rare."

Kevin Lopez

"After 100+ years of combined expertise, HTS rebuilt our Danfoss Series 24 pump when suppliers said replacement was the only option. Their technical depth and commitment to manufacturer specifications makes them the industry standard."

Christopher Nash

"HTS rebuilt our Kawasaki hydrostatic transmission when everyone said it was done. Their expertise with K3V series components and meticulous testing to manufacturer specs got us back operational in days. Outstanding quality and reliability."

Marcus Chen

"We had what we thought was a non serviceable hydrostatic transmission from our John Deere skidsteer. HTS not only repaired it but installed it themselves. Their technicians walked us through everything. Saved us thousands versus replacement."

Robert Sullivan

"As a distributor, we rely on HTS for the Exchange Program to minimize downtime for our clients. Their short-time turnaround on quality-assured rebuilt units is unmatched. We've partnered with them for over a decade."

Jennifer Osaka

"Our Rexroth pump failed mid-project. HTS turned it around in 48 hours with their short-time exchange program. The rebuilt A4VG arrived tested, warranted, and ready to install. Couldn't ask for faster service."

David Patterson

"We sold HTS our surplus Uchida cores through their Purchase Program and received top-dollar pricing. Their buyer was knowledgeable and transparent. Helped us clear inventory and fund new equipment purchases efficiently."

Angela Morrison

"HTS has been our trusted partner for Vickers motor rebuilds for five years. Their technicians are held accountable for quality, and it shows. Every unit arrives tested to specification with a solid warranty backing."

Thomas Wright

"What made us choose HTS: their non serviceable hydrostatic transmission solutions actually work. They have statistical process control systems comparing every rebuild to OEM specs. That level of precision is rare."

Kevin Lopez

"After 100+ years of combined expertise, HTS rebuilt our Danfoss Series 24 pump when suppliers said replacement was the only option. Their technical depth and commitment to manufacturer specifications makes them the industry standard."

Christopher Nash

"HTS rebuilt our Kawasaki hydrostatic transmission when everyone said it was done. Their expertise with K3V series components and meticulous testing to manufacturer specs got us back operational in days. Outstanding quality and reliability."

Marcus Chen

"We had what we thought was a non serviceable hydrostatic transmission from our John Deere skidsteer. HTS not only repaired it but installed it themselves. Their technicians walked us through everything. Saved us thousands versus replacement."

Robert Sullivan

"As a distributor, we rely on HTS for the Exchange Program to minimize downtime for our clients. Their short-time turnaround on quality-assured rebuilt units is unmatched. We've partnered with them for over a decade."

Jennifer Osaka

"Our Rexroth pump failed mid-project. HTS turned it around in 48 hours with their short-time exchange program. The rebuilt A4VG arrived tested, warranted, and ready to install. Couldn't ask for faster service."

David Patterson

"We sold HTS our surplus Uchida cores through their Purchase Program and received top-dollar pricing. Their buyer was knowledgeable and transparent. Helped us clear inventory and fund new equipment purchases efficiently."

Angela Morrison

"HTS has been our trusted partner for Vickers motor rebuilds for five years. Their technicians are held accountable for quality, and it shows. Every unit arrives tested to specification with a solid warranty backing."

Thomas Wright

"What made us choose HTS: their non serviceable hydrostatic transmission solutions actually work. They have statistical process control systems comparing every rebuild to OEM specs. That level of precision is rare."

Kevin Lopez

"After 100+ years of combined expertise, HTS rebuilt our Danfoss Series 24 pump when suppliers said replacement was the only option. Their technical depth and commitment to manufacturer specifications makes them the industry standard."

Christopher Nash
The HTS Difference

Why Choose Hydrostatic Transmission Service?

We bring unmatched expertise, rigorous quality standards, and customer-first programs to every hydrostatic repair.

100+ Years Experience

Our team brings over a century of combined hydrostatic and hydraulic service industry expertise to every rebuild.

1-Year Warranty

Every rebuilt unit ships with a full 1-year warranty, giving you confidence in performance and long-term reliability.

Global Exchange Program

Our short-time exchange program ships warranted rebuilt units internationally, slashing downtime for operations worldwide.

Statistical Quality Control

We use a Statistical Process Control System to verify every rebuilt unit against manufacturer specifications before shipment.

About Hydrostatic Transmission Service

A world-class team dedicated to hydrostatic excellence.

Hydrostatic Transmission Service, LLC has built its reputation as one of the world's premier providers of hydrostatic rebuild and exchange services, operating from its headquarters in Tupelo, MS and serving customers internationally. With a team that collectively holds over 100 years of experience in the hydraulic and hydrostatic service industry, the company has developed deep expertise across dozens of major brands and transmission types. Every technician is individually accountable for quality, trained in statistical process control, and committed to rebuilding units that meet or exceed original manufacturer specifications. Major industry names—including Sauer Danfoss, Eaton, John Deere, Parker, and Rexroth Bosch—have trusted HTS with their hydrostatic service needs, a testament to the company's sustained commitment to quality, precision, and customer partnership.

100+ YearsCombined team experience in hydrostatic and hydraulic service
30+ BrandsMajor hydrostatic and hydraulic brands serviced and supported
1-Year WarrantyFull warranty on every rebuilt or exchanged unit

Frequently Asked Questions

What does 'non-serviceable' actually mean for a hydrostatic transmission?

'Non-serviceable' is typically an OEM designation indicating the manufacturer does not provide factory rebuild support or spare parts through standard channels. It does not necessarily mean the unit is physically unrepairable. Specialist rebuilders like Hydrostatic Transmission Service have the tooling, technical knowledge, and parts inventory to disassemble, recondition, and restore many such units to full working specification.

Can a non-serviceable hydrostatic transmission actually be rebuilt?

Which hydrostatic transmission brands does HTS service?

What is included in a standard hydrostatic transmission rebuild?

Does a rebuilt hydrostatic unit come with a warranty?

What is the exchange program and how does it reduce downtime?

Can I send in my unit for evaluation before committing to a rebuild?

Does HTS buy surplus or used hydrostatic components?

Still Have Questions About Your Transmission?

Speak directly with our experienced technicians for an honest evaluation of your unit.

Our Service Reach

Headquartered in Tupelo, MS, we provide hydrostatic rebuild and exchange services to customers worldwide.

International

Service Reach

Tupelo, MS

Headquarters

Ship Worldwide

Availability

Need a Rebuild or Exchange Shipped to You?

We ship quality-tested, warranted units to customers across the US and internationally.

Trusted & Proven

Awards and Recognition

1-Year Rebuild Warranty badge for hydrostatic transmission service

1-Year Rebuild Warranty

Industry-standard warranty on every rebuilt and exchanged unit.

Statistical Process Control quality assurance certification badge

Statistical Process Control

Quality validation system benchmarked against manufacturer specifications.

Over 100 years of combined hydrostatic service experience badge

100+ Years Combined Experience

Decades of proven expertise in hydrostatic and hydraulic service.

Send Us Your Unit or Request a Rebuild Quote

Reach our technical team to discuss your non-serviceable transmission, request an exchange unit, or get a rebuild assessment. We respond promptly and ship globally.

Contact Us Today

For immediate assistance, feel free to give us a direct call at (800)-361-0068 You can also send us a quick email at sales@htsrepair.com