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24-Hour Rush Repair
Hydraulic cylinder bench · Fontana, CA
Hitachi Hydraulic Cylinder Repair in Fontana
Hitachi and ZX excavators are digging machines first — and a digging machine is only as strong as its boom, arm and bucket cylinders. Our Fontana shop rebuilds Hitachi hydraulic cylinders in-house, from mini-excavator cylinders to the large-bore work on production excavators: teardown, measurement, honing, rod work and pressure testing without the cylinder ever leaving the property.
Hydraulic cylinder bench · Fontana, CA
Hitachi excavator cylinders, rebuilt at our bench
Hitachi cylinders work at high pressure in abrasive conditions, and they fail in predictable places: piston seals that bypass, rods scored by grit at the wiper, barrels worn where the piston rides hardest. We measure all of it at teardown, hone barrels back to finish, re-chrome or manufacture rods, and rebuild with the correct seals for the cylinder's duty — compact ZX minis through the big mining-class machines that work the aggregate plants around the Inland Empire.
Brands we serviceHitachiKomatsuCaterpillarKobelcoVolvoJohn DeereCase
Hitachi Hydraulic Cylinder Repair in Fontana · Fontana, CA
Hitachi excavator hydraulic cylinder repair at LA Trucks and Tractors in Fontana
A reseal is not always the repair
If a Hitachi cylinder ate a seal kit in a few months, the seals were the symptom, not the cause — a scored rod or a worn barrel will destroy the next kit just as fast. Our bench decides from measurements, not habit: reseal the cylinders that only need seals, and do the rod and barrel work on the ones that need it, so the repair lasts a season instead of a month. Regular hours Monday–Friday 6 AM–5 PM; rush service 24 hours a day, 365 days a year, with free quotes and free pick-up and delivery.
- Boom, arm and bucket cylinder rebuilding
- Mini-excavator through large-bore cylinders
- Rod re-chroming and new rod manufacture
- Barrel honing to finish
- Pressure testing on every rebuilt cylinder
Our 8-step repair process
A clear path from the first call to a tested component or machine returned to work.
Inspection
Disassemble and evaluate the complete failure.
Photos & video
Document condition and findings for a clear repair conversation.
Repair quote
Define the recommended work and quote before proceeding.
Approval
Confirm scope, urgency and the practical path forward.
Manufacturing
Machine, weld, rebuild or reverse engineer required components.
Testing
Verify operation and workmanship before release.
Shipment
Return the completed component or equipment to service.
Frequently asked questions
Do you rebuild cylinders for Hitachi ZX mini excavators?
Yes — compact-machine cylinders are regular bench work here, from reseals to full rebuilds with rod and barrel work.
Why does my Hitachi bucket cylinder keep leaking at the rod?
Repeated rod leakage usually means the rod surface or the barrel is damaged, not just the seals. We measure both at teardown and quote the fix that stops it for good.
Related services
Emergency breakdown? Call the 24-hour rush line.
(949) 400-2937Schedule service or open a repair order
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