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24-Hour Rush Repair
Cylinder bench · Fontana, CA
Hydraulic Cylinder Repair in Fontana
Hydraulic Cylinder Repair in Fontana is core work at Top Notch Equipment Repair in Fontana. Expect a documented teardown, honest measurements, in-house machining and a tested result — with free quotes and a rush line that answers 24 hours a day, 365 days a year.
Cylinder bench · Fontana, CA
Reseal vs. rebuild — know which one you are buying
Cylinders are stripped and measured on our bench: rods checked for score and straightness, barrels honed, seals and wear rings renewed, rods re-chromed or manufactured new when they are bent or pitted. Every cylinder is pressure-tested before it is released, and the machine shop sits in the same building, so rod and barrel work never leaves the property.
We tell you which one your cylinder needs, with the measurements and photos to back it up — and the quote before the work.
Brands we serviceCaterpillarKomatsuJohn DeereCaseKubotaBobcatParkerHerkulesCustom HoistsMailhot
Hydraulic Cylinder Repair in Fontana · Fontana, CABent rods, drift and the other usual failures
Bent rods come from side loads and impacts; the honest fix is a new rod manufactured to spec, not a straightening gamble on a loaded member. Drift under load means internal leakage past the piston — seals, piston wear or bore condition, separated by test. External leaks at the gland point at rod surface and gland fit. Every one of these is daily work here, on cylinders from excavators, loaders, dozers, forklifts, telehandlers, presses and industrial machinery.
- Complete cylinder rebuilding and testing
- Rod repair, re-chroming and new rod manufacturing
- Barrel honing and bore restoration
- Bent rod diagnosis and replacement
- Drift and internal-leak diagnosis
- Custom and obsolete cylinder machining
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
My cylinder leaks at the rod. Is a reseal enough?
Only if the rod surface and gland are in good condition. We measure and show you — if the metal is right, a reseal is the honest job; if it is not, we will show you why.
Can you fix a bent hydraulic cylinder rod?
A bent rod under load is a safety item. We manufacture replacement rods to specification rather than straightening a compromised one.
Why does my cylinder drift down under load?
Internal leakage past the piston seals or a worn bore is the usual cause. A drift test isolates whether the cylinder or the control valve is responsible before money is spent.
Do you repair large industrial cylinders too?
Yes — press, lift and industrial cylinders are handled on the same bench with the same rebuild standard.
Related services
Emergency breakdown? Call the 24-hour rush line.
(949) 400-2937Schedule service or open a repair order
Request a service call.
Tell us the make, model, symptoms, where the machine sits and how urgent it is. Your details open as a text to the shop, ready for you to review before you send.