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Plain answers · Fontana, CA

Gear & Gearbox Repair FAQs

The questions that come up at the gear bench — including the classic one about a gear nobody sells anymore. If something has failed right now, call (949) 400-2937.

Plain answers · Fontana, CA

The essentials, briefly

In Fontana we rebuild gearboxes, transmissions and differentials and we manufacture gears and shafts — reverse engineering parts even after the original manufacturer has discontinued them. Inspections and quotes cost nothing and come documented with photos and video. Regular hours are Monday–Friday 6 AM–5 PM, while rush and emergency gear work runs around the clock, every day of the year.

Inside the gear repair workshop of Top Notch Equipment Repair, Fontana, CaliforniaGear & Gearbox Repair FAQs · Our Fontana, CA workshop

How every repair moves through the shop: 8 steps

From your first phone call through final testing, here is how a job moves through the shop.

01

Collection

Where it applies, we arrange collection of your machine or component at no charge.

02

Inspection

We strip the unit down and assess the full extent of the failure.

03

Photo & video record

We photograph and film what we find, so the repair discussion is based on evidence.

04

Written quote

You receive a written price for the recommended scope before any work starts.

05

Approval

Together we agree the scope, the priority and the most sensible way ahead.

06

Manufacturing

Any parts the job needs are machined, welded, rebuilt or reverse engineered in-house.

07

Testing

Nothing leaves until operation and workmanship have both been checked.

08

Return delivery

The finished machine or component goes back to you ready for service.

Questions customers ask us

Is it really possible to make a discontinued gear?

It is. The failed gear gets measured — or, when it has been destroyed, its mating parts and housing do — and a replacement is manufactured from those measurements. Jobs of exactly this kind are among the most common here.

Do you rebuild gearboxes sent in from outside the local area?

Yes — plants ship industrial gearboxes to us from across Southern California and further away, for rebuilding work and for manufacturing.

What is included in a gearbox rebuild?

Stripping the unit down, a documented inspection, fresh bearings and seals, repair or manufacture of gears and shafts, restoration of the housing where it is needed, assembly set up correctly, and testing.

How is the price worked out?

Following the inspection, in a written quote built on the documented findings — and both the inspection and the quote are free.

Is emergency gearbox repair something you handle?

Yes — urgent gear and gearbox work is a permanent service here, available 24 hours a day, every day of the year.

Down right now? Ring the round-the-clock rush line.

(949) 400-2937

Book a service visit or start a repair order

Ask for a service visit.

Tell us the make and model, what it is doing, where it sits, how urgent it is and when suits you. The form opens your details as a text message to John, so you can check everything before you hit send.

Schedule Service / Repair Order