Marine Gearbox & Pump Repair
Deck, dredge and port-equipment drives rebuilt for salt air, moisture and heavy loads — with pickup and shipped-in repair nationwide.
Gearbox & Pump Repair for Marine
Rebuilt at our Rialto, CA shop.
Marine and port equipment works in salt air, moisture and corrosive conditions, often far from a repair shop and on a schedule set by tides, berths and cargo. A failed winch, crane, dredge or pump drive can hold up a vessel or a terminal, so the repair has to be thorough and the unit ready to go back into service. American Gearbox Repair rebuilds marine gearboxes and pumps at our shop in Rialto, California, serving marine, dredging and port operations across California and nationwide by pickup, delivery and shipped-in repair.
We rebuild propulsion-support, deck, dredging and port-equipment drives, and we pay close attention to corrosion, sealing and bearing condition — the factors that decide how long a marine gearbox lasts after rebuild. Rebuilt units are covered by our 24-month warranty.
Equipment We Repair in Marine
- Deck machinery gearboxes — winch, windlass, capstan and crane drives, rebuilt for heavy, intermittent loads and salt-air exposure.
- Dredge and pump drives — gearboxes and pumps on dredges, cutterheads and slurry systems handling abrasive material.
- Port and terminal drives — gearboxes on ship loaders, unloaders, conveyors and container-handling equipment.
- Thruster and steering support drives — auxiliary gearboxes associated with manoeuvring and steering systems.
- Ballast and bilge pumps — centrifugal and positive-displacement pumps for ballast, bilge and fire-main service.
- Hydraulic cylinders — cylinders on cranes, hatches, ramps and handling equipment, resealed and tested.
Common Failures We See
- Salt-water corrosion — attacking housings, shafts, fasteners and bearings.
- Seal failure and water ingress — salt water getting into gearboxes and destroying bearings and gears.
- Bearing failure from heavy, shock loads — on winches, cranes and dredge equipment.
- Pump wear from sand and slurry — abrasive wear in dredge, ballast and bilge pumps.
- Gear wear from intermittent, reversing duty — frequent starts, stops and reversals on deck machinery.
Repair & Rebuilding Services
- Complete gearbox rebuilding — teardown, cleaning, inspection and rebuild with new gears, bearings, seals and shafts, with materials suited to marine service.
- Custom gear manufacturing — replacement gears cut when the original is worn, broken or no longer available.
- Industrial pump repair — ballast, bilge, fire-main, dredge and transfer pumps rebuilt and tested.
- Hydraulic cylinder repair — reseal, re-rod and re-hone for marine and port cylinders.
- Emergency pickup and shipping coordination — so a down unit gets to our Rialto shop quickly and returns ready to install.
Emergency & Rush Service
When a line is down, call (714) 204-5167 — emergency service is available 24/7. We arrange emergency pickup and delivery to our Rialto shop, prioritise inspection, and, on qualifying jobs, complete rush repairs in 24–72 hours. Rush timing depends on unit condition, parts availability and job complexity, so we confirm a realistic schedule after inspection. See our emergency repair page.
How a Repair Works
Repairs are done at our shop in Rialto, California — we do not repair equipment on your site. Ship your unit to us, or arrange emergency pickup and delivery. We inspect it, confirm the failure and parts needed, and quote the repair before work starts. Turnaround depends on equipment condition, parts required, job complexity and availability. Rebuilt units are tested where applicable and covered by our 24-month warranty. Call (714) 204-5167 or request a quote with the brand, model and problem.
Get Started
For a marine drive or pump problem, call (714) 204-5167. Tell us the vessel or terminal, the equipment and the service, and we will confirm how to get the unit to our shop and how quickly we can inspect it. Call (714) 204-5167 or request a quote.
Need a repair quoted?
Call (714) 204-5167 or send a quote request — we will confirm what to send in and how pickup works.