Collection
Where it applies, we arrange collection of the machine or part at no charge.
Round-the-Clock Rush Repairs
Fontana, CA · Independent Caterpillar service
Caterpillar Equipment Repair in Fontana
Cat iron was designed to be rebuilt rather than replaced — and rebuilding is precisely what this shop is set up to do. In Fontana our crew repairs and rebuilds Cat dozers, excavators, wheel loaders, backhoes and support machines, covering engines, transmissions, final drives and hydraulics. We're independent, not a Caterpillar dealer; owners choose us for work done to rebuild depth, inspections documented honestly, and turnaround times that respect a production schedule.
Fontana, CA · Independent Caterpillar service
The Cat systems we rebuild in-house
We repair and rebuild engines, look after powershift transmissions and torque converters, handle final drives and steering across the dozer range, and service hydraulic pumps, cylinders and control valves on excavators and loaders, alongside undercarriage assessment and repair. Machining and gear manufacturing sit in the same building, so a component that's worn — or no longer on the shelf anywhere — gets restored rather than leaving the machine stranded.
Brands we serviceCaterpillar
Caterpillar equipment repair · Fontana, CAComplete reconditioning and repaint
Cat M322F — Complete Recondition and Repaint
This Cat M322F wheeled excavator arrived rough and road-worn. Our crew masked it up, prepared every panel and sprayed fresh Cat yellow right here in the Fontana yard — then sent it out the gate looking like it had just been delivered new. It's the same start-to-finish reconditioning we offer for excavators and heavy equipment generally: bodywork, paint, decals and detailing.
What an independent shop does differently
A Cat machine with sound bones is worth serious money, and a proper rebuild can reset its working life for a fraction of what replacement would cost. Our inspection goes through the machine system by system, backed by photos and video, so the repair-versus-overhaul call is yours and it's made on evidence. Quotes cost nothing, pick-up and delivery are free where applicable, and rush service runs 24 hours a day.
- Dozer work — undercarriage, final drives and transmissions
- Excavator hydraulics plus swing and travel systems
- Drivetrain and hydraulic work on wheel loaders
- Backhoe repairs across every system
- Engine repairs and rebuilds
- Complete reconditioning and overhaul work
How a repair moves through our shop — 8 steps
From your first phone call to a machine or component that's been tested and put back to work, here's the route every job follows.
Teardown & check
We strip the unit down and assess the full extent of the failure.
Photo & video record
We photograph and film what we find, so the conversation about repairs starts from clear evidence.
Written quote
We spell out the work we recommend and price it before anything goes ahead.
Your go-ahead
Together we confirm what's being done, how urgent it is and the most sensible way forward.
Machine shop work
Components get machined, welded, rebuilt or reverse-engineered as the job requires.
Bench testing
Nothing leaves until operation and workmanship have both been checked.
Return
The finished part or machine goes back to you, ready to return to service.
Questions owners ask us
Is Top Notch a Caterpillar dealership?
No — Top Notch Equipment Repair is an independent shop that services Caterpillar equipment. We have no affiliation with Caterpillar Inc. or with any dealer.
Do Cat engines and transmissions get rebuilt here?
They do — engines, transmissions, torque converters and final drives are all rebuilt in-house, gear and shaft manufacturing included.
Can you tell me whether overhauling my Cat machine is worthwhile?
That's exactly what the documented, system-by-system inspection is for — and it doesn't cost you anything.
More services to explore
Down right now? Ring the round-the-clock rush line.
(949) 400-2937Book a service visit or start a repair order
Ask for a service visit.
Tell us the brand, the model, what's wrong, where the machine sits, how urgent it is and when you'd like us there. The form opens your details as a text to John, so you can check them over before you hit send.