Pick-up
Coordinate free equipment or component pick-up when applicable.
24-Hour Rush Repair
Driveline bench · Fontana, CA
Differential Repair in Fontana
For Differential Repair in Fontana, the work happens under one Fontana roof at Top Notch Equipment Repair: teardown, measurement, machining and rebuild by the same crew that quotes it. Quotes and pick-up are free, and rush jobs run around the clock.
Driveline bench · Fontana, CA
Setup is the repair
Equipment comes in dead and leaves working: the failure is documented, the repair is quoted from real measurements, and the machining, welding, grinding and rebuilding all happen in-house. Free pick-up and delivery keep the logistics off your crew, and rush work runs around the clock, every day of the year.
Brands we serviceDana SpicerMeritorEatonAAMFordCaterpillarKomatsuJohn Deere
Differential Repair in Fontana · Fontana, CADifferential service details
Trucks from pickups to semis, and equipment differentials and axle drives. Regular hours Monday–Friday 6 AM–5 PM; rush line around the clock; free pick-up, delivery and quotes.
- Ring and pinion replacement and setup
- Bearing and carrier renewal
- Axle housing repair
- Locker and limited-slip service
- Obsolete gear manufacturing
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
Why is my differential whining?
A speed-dependent whine usually means gear tooth wear or a bearing going out — both get worse, and the inspection is free.
Can you rebuild differentials for older trucks?
Yes — including manufacturing gears that are no longer available for older and less common axles.
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.