Pick-up
Coordinate free equipment or component pick-up when applicable.
24-Hour Rush Repair
Excavator repair · Fontana, CA
Excavator Repair in Fontana
An excavator is a hydraulic system with an engine attached — and hydraulics are the heart of this shop. Our Fontana crew repairs full-size and mid-size excavators across every brand: main pumps, control valves, swing and travel motors, boom/arm/bucket cylinders, final drives, undercarriage and engines, with rebuilding and machining in-house. (Mini excavators have their own page.) If it digs, we can make it dig right again.
Excavator repair · Fontana, CA
Excavator work we do every week
Main pump diagnosis, rebuild and setting-to-spec; swing motor and gearbox service; travel motor and final drive rebuilding; cylinder resealing, re-rodding and honing; pin, bushing and line-boring work on booms and sticks; track, roller and idler service; and diesel engine repair across the brands. Every teardown is documented — pressures, flows and measurements shown to you before the quote.
Brands we serviceCaterpillarKomatsuJohn DeereCaseBobcatKubotaCumminsPeterbiltKenworthFreightliner
Excavator Repair in Fontana · Fontana, CAMeasured, not guessed
Excavator hydraulics punish guesswork: a weak machine can be a pump, a valve, a motor or all three. We test, document with photos and video, and quote in writing — then rebuild in-house, with worn components measured and shown to you. Free pick-up and delivery when applicable; Monday–Friday 6 AM–5 PM, and a 24-hour rush line every day of the year.
- Main hydraulic pump rebuilds and calibration
- Swing and travel motor service
- Cylinder resealing and re-rodding
- Undercarriage and final drives
- Boom and stick pin and bushing work
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
Which excavator brands do you repair?
Caterpillar, Komatsu, Hitachi, Kobelco, Volvo, John Deere, Case and more — brand pages detail each line. The hydraulic bench does not care about the badge.
My excavator is slow and weak on one side — what is it?
One-sided weakness usually points to a travel motor, final drive or a pump section feeding that side. We pressure- and flow-test and show you the readings.
Do you do undercarriage work?
Yes — tracks, rollers, idlers, sprockets and tension systems, plus the final drives behind them.
Related services
Emergency breakdown? Call the 24-hour rush line.
(949) 400-2937Schedule service or open a repair order
Request a service call.
Include the make, model, symptoms, location, urgency and preferred service time. Your details open in a text to John so you can review them before sending.