Wastewater Gearbox & Pump Repair
Clarifier, aeration and lift-station drives rebuilt for constant duty in corrosive, wet conditions — with emergency pickup when treatment is at risk.
Gearbox & Pump Repair for Wastewater
Rebuilt at our Rialto, CA shop.
Wastewater plants cannot simply stop. Clarifiers, aeration blowers, lift stations and sludge equipment run around the clock in wet, corrosive conditions, and a failed drive can put a plant out of compliance quickly. American Gearbox Repair rebuilds wastewater gearboxes and pumps at our shop in Rialto, California, serving municipal and industrial treatment plants across California and nationwide by pickup, delivery and shipped-in repair.
We rebuild the drives and pumps that treatment depends on, and we understand that a plant needs a clear quote, a realistic schedule and a unit that goes back into service and stays there. Rebuilt units are covered by our 24-month warranty.
Equipment We Repair in Wastewater
- Clarifier and thickener drives — slow-speed, high-torque gearboxes on clarifiers and thickeners, rebuilt with attention to bearings, seals and gear wear.
- Aeration blower and mixer gearboxes — drives on blowers, surface aerators and mixers that run continuously.
- Lift station and raw sewage pumps — centrifugal and positive-displacement pumps, including grinder and chopper pump components where applicable.
- Sludge handling drives — gearboxes on belt presses, centrifuges, screw presses and conveyors handling dewatered sludge.
- Bar screen and grit equipment drives — drives exposed to grit, rags and corrosive wastewater.
- Hydraulic cylinders — cylinders on gates, presses and handling equipment, resealed and tested.
Common Failures We See
- Corrosion and moisture ingress — wastewater and humidity attacking bearings, shafts and housings.
- Seal failure — letting wastewater into gearboxes and shortening bearing life.
- Bearing and gear wear from continuous duty — long hours with little downtime for inspection.
- Grit and debris damage — abrasive wear in pumps and in drives on screening and grit equipment.
- Overload from ragging and blockages — sudden torque spikes that damage gears, shafts and couplings.
Repair & Rebuilding Services
- Complete gearbox rebuilding — teardown, cleaning, inspection and rebuild with new gears, bearings, seals and shafts as required.
- Industrial pump repair — lift station, process and sludge pumps rebuilt and tested.
- Custom gear manufacturing — replacement gears cut when originals are worn or no longer stocked.
- Hydraulic cylinder repair — reseal, re-rod and re-hone for treatment-plant cylinders.
- Emergency prioritisation — inspection and quoting moved to the front of the queue when a treatment process is at risk.
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
If a clarifier drive is stalled, a lift station pump is down or an aeration drive is failing, call (714) 204-5167. We will arrange emergency pickup or shipping to our Rialto shop and confirm a realistic rush schedule after inspection. 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.